Publications 2015-1

Acheampong G.K., R.K. Bam and T. Wakatsuki. (2015). Influence of seeding method, weed management and N-fertilizer rate on weed dynamics and grain yield in Sawah rice production. Development in Practice, (submitted).

Adama, I., H. Braimah and B. W. Amoabeng (Accepted) Efficacy of Super neemol® granules for the control of cowpea (Vigna unguiculata L. Walp.) insect pests in the forest region of Ghana. International Journal of Agriculture Innovations and Research.

Abstract

Assessment of Genetic Variation Among Some Introduced Tomato

(Solanum lycopersicum L.) Varieties Using SSR markers

G. A. K. Gongolee1, R. Akromah², and *M. K. Osei³

1University of Liberia, P.O. Box 10-9020, 1000 Monrovia 10 Liberia

2Kwame Nkrumah University of Science and Technology, Faculty of Agric., Department of Crop and Soil Sciences, Kumasi, Ghana.

3CSIR - Crops Research Institute, Horticulture Division, P.O. Box 3785, Kumasi, Ghana

*Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

 Received: 15th January 2016 Accepted: 16th May 2016

Abstract

Simple sequence repeats (SSR) is one of the most appropriate markers for variety identification as it has immense discrimination influence for varieties with restricted genetic variation. Total genomic DNA was extracted from young freshly leaves of five tomato varieties. Genetic characterization of introduced tomato varieties were investigated using 15

SSR markers. Out of the 15 markers, 14 gave polymorphic bands and therefore were considered for further analysis. The number of alleles ranged from 2.00 (SSR2), (SSR3) to

6.00 (SSR9), (SSR11) alleles per locus with a mean value of 4.07 alleles per locus. The average Polymorphic Information Content (PIC) value was 0.59 ranging from 0.31(SSR2) to

0.77 (SSR9). The most polymorphic primers were SSR9, SSR11, and SSR4 based on PIC

values. The Agglomerative hierarchical clustering grouped the tomato varieties into two (A

& B). At a coefficient of 0.88, cluster B had three sub-clusters BI (Heinz), BII (Shasta) and BIII (OP-B155 and CRI-P00). At a coefficient of 0.90 varieties OP-B155 and CRI-P00 were identified as the most genetically related varieties. The genetic distance information from this study might be useful for further implementation of breeding strategies.

Key words: genetic variability, Solanum lycopersicum, simple sequence repeat, maker

Résumé

Répétitions de séquences simples (SSR) est l'un des marqueurs les plus appropriés pour l'identification des variétés comme il a une immense influence de la discrimination pour les variétés avec la variation génétique restreinte. L'ADN génomique total a été extrait de jeunes feuilles fraîchement des cinq variétés de tomates. La caractérisation génétique des variétés de tomates introduites ont été étudiées à l'aide de 15 marqueurs SSR. Sur les 15 marqueurs,

14 ont donné des bandes polymorphes et donc ont été considérés pour une analyse ultérieure. Le nombre d'allèles variait de 2,00 (SSR2), (SSR3) à 6,00 (SSR9), (SSR11) allèles par locus avec une valeur moyenne de 4,07 allèles par locus. La valeur moyenne de contenu d'information polymorphique (PIC) était de 0,59 allant de 0,31 (SSR2) à 0,77 (SSR9). Les plupart des amorces polymorphes étaient SSR9, SSR11 et SSR4 fondée sur des valeurs de PIC. La classification ascendante hiérarchique a regroupé les variétés de tomates en deux (A

& B). A un coefficient de 0,88, le groupe B avait trois sous-groupes BI (Heinz), BII (Shasta) et BIII (OP-B155 et CRI-P00). A un coefficient de 0,90 variétés OP-B155 et CRI-P00 ont été identifiés comme les variétés les plus génétiquement liés. L'information génétique à distance de cette étude pourrait être utile pour poursuivre l'application de stratégies de sélection.

Mots clés: variabilité génétique, Solanum lycopersicum, répétition de séquence simple, maqueur

Effect of Sowing Depths on Cylas spp Infestation on Some Sweetpotato Varieties

E. D. Boamah1, A. Oppong2, and D. B. Boakye3

1CSIR - Plant Genetic Resources Research Institute. P.O. Box 7, Bunso.

2CSIR - Crops Research Institute. Box 3785, Fumesua-Kumasi.

3Kwame Nkrumah University of Science and Technology, Kumasi

 

 Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 15th February 2016 Accepted: 26th May 2016

 

Abstract

The effect of sowing depths on Cylas spp infestation of four sweetpotato varieties ‘Sauti’,

‘Okumkom’,‘Santompona’ and ‘Faara’ was determined in a field trial at Kwame Nkrumah University of Science and Technology. Data on number of leaves and branches on upper plant canopy (top 30cm), vine thickness, internode length, soluble sugar and dry matter content were taken and correlated with Cylas spp infestation. A two-factorial experiment was conducted using four sweetpotato varieties and three sowing depths in a Randomized Completely Block Design with three replications. The incidence of Cylas spp on the upper canopy of sweetpotato varieties after sowing increased from 2nd,3rd to the 4th month. There was significant increase in the incidence of weevil (P<0.01) with time on the four sweetpotato varieties. The tuber stalk length of the four sweetpotato varieties measured at harvest was highly significant (P<0.01).There was a negative correlation between percent tuber infestation and the three sowing depths. The level of tuber infestation of the four sweetpotato varieties by Cylas spp decreased with increasing depth of sowing. This may explain why sweetpotato varieties with long tuber stalk had the least incidence of Cylas spp. The results also indicated that the sweetpotato variety which had the highest number of leaves and branches, as well as the thickest vine had the highest incidence of vine infestation at 5% level. The sweetpotato varieties used had varying levels of soluble sugar and percent dry matter was also significant (P<0.05).

Key words; Cylas spp, dry matter, soluble sugar, sweetpotato,

Résumé

L'effet de l'ensemencement des profondeurs sur infestation de Cylas spp de quatre variétés de

patate douce 'Sauti', 'Okumkom', 'Santompona' et 'Faara' a été déterminée dans un essai sur le champ à Kwame Nkrumah University of Sciences and Technology. Les données sur le nombre de feuilles et de branches sur la canopée supérieure de la plante (en haut de 30cm), l'épaisseur de la vigne, la longueur internodale, sucre soluble et la teneur en matière sèche ont été prises et en corrélation avec l'infestation de Cylas spp. Une expérience de deux factorielles a été réalisée en utilisant quatre variétés de patate douce et trois profondeurs de semis dans une étude de conception bloqué complètement randomisée avec trois répétitions. L'incidence de Cylas spp sur la canopée supérieure des variétés de patate douce après le semis a augmenté de 2em, 3em au 4em mois. Il y avait augmentation significative de l'incidence des charançons (P <0,01) avec le temps sur les quatre variétés de patate douce. La longueur du tubercule de la tige des quatre variétés de patate douce mesurées à la récolte était hautement significative (P <0,01) .Il avait une corrélation négative entre pourcentage de l'infestation des tubercules et les trois profondeurs de semis. Le niveau de l'infestation de tubercule des quatre variétés de patate douce par Cylas spp a diminué avec la profondeur du semis. Cela peut expliquer pourquoi les variétés de patate douce avec une longue tige de tubercules ont le moins d'incidence de Cylas spp. Les résultats indiquent également que la variété de patate douce qui avait le plus grand nombre de feuilles et de branches, ainsi que la plus épaisse de la vigne ont eu la plus forte incidence de l'infestation de la vigne au niveau de

5%. Les variétés de patate douce utilisées avaient différents niveaux de sucre soluble et pourcentage de matière sèche a également été significative (P <0,05).

 

Mots clés: Cylas spp, matière sèche, le sucre soluble, la patate douce,

Estimate of Heterosis in Early Generations of Tomato

(Solanum lycopersicum L.)

S. M. Kanneh1, *M. K. Osei2, R. Akromah3 and M. Frimpong2

1Sierra Leone Agricultural Research Institute, PMP 1313 Tower Hill, Freetown, Sierra Leone

2CSIR - Crops Research Institute, P.O. Box 3785, Kumasi, Ghana

3KNUST - Departments of Crop and Soil Sciences, Faculty of Agriculture, Kumasi, Ghana

 Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

 Received: 14th January 2016 Accepted: 16th May 2016

 Abstract:

A study was conducted to estimate heterosis of six (6) tomato genotypes involving two parents at the experimental field of Horticulture division of CSIR - Crops Research Institute, Kumasi during the rainy season of 2014-2015. Analysis of variance showed significant differences among genotypes for all the traits revealing the existence of genetic variability among the studied materials. F2 and BC2F1 produced the highest total marketable fruits and F1, F2 and

BC2F1 genotypes provided high competitive potential over parental. Heritability estimate were high for days to maturity, fruit flesh thickness, number of fruits per plant and stem girth. Positive and negative narrow level (<50%) of heterosis and better parent were estimated.

Keywords: Heterosis, tomato, heritability, yield, yield components

Résumé

Une étude a été menée pour estimer hétérosis de six (6) génotypes de tomate impliquant deux parents au champ expérimental de la division d'Horticulture du CSIR - Crops Research Institute, Kumasi, pendant la saison des pluies de 2014-2015. L'analyse de variance a montré des différences significatives entre les génotypes pour pratiquement tous les traits qui révèlent l'existence de la variabilité génétique parmi les matériaux étudiés. F2 et BC2F1

produit les fruits les plus élevés au total négociables et F1, F2 et BC2F1 génotypes fournis potentiel concurrentiel sur parental. Estimation de l'héritabilité étaient élevés pour les jours jusqu'à l'échéance, l'épaisseur de la chair du fruit, le nombre de fruits par plante et de la tige de circonférence. Niveau positif et négatif étroite (<50%) de l'hétérosis et les meilleurs parents ont été estimés.

Mots-clés: hétérosis, tomate, héritabilité, le rendement, les composantes du rendement

 

Impact of Yam mosaic virus (YMV) on tuber yield of white yam

(Dioscorea rotundata Poir) in Ghana

J. N. L. Lamptey1, A. Oppong1, and F. A. Ofori2

1Crops Research Institute, P.O. Box 3785, Kumasi, Ghana,

2Dept of Crop & Soil Sciences Kwame Nkrumah University of Science and

Technology, Kumasi

 Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it., This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Received: 2nd February 2016 Accepted: 14th May 2016

Abstract

The impact of Yam mosaic virus (YMV) on tuber yield of white yam (Dioscorea rotundata Poir) in the forest zone of Ghana was assessed under controlled environment and in the field at Kumasi, Ghana. Two field trials were carried out in 2001 and 2002. The experiment under controlled environment was conducted in 2003. In the controlled environment, white yam developed from tissue culture were mechanically inoculated with sap extracts of YMV infected leaves. The inoculated plants were grown alongside known YMV infected white yams not cleaned with tissue culture as well as non inoculated healthy controls cleaned with tissue culture and virus indexed. In the field trial, data taken were disease severity and yield per plant after harvest. Plants raised from non tissue culture cleaned seed yam showed severe symptoms of YMV with a yield loss of 53% as against 28% for the inoculated plants. In the two field trials in 2001 and 2002, mean yield losses of between 26.0% and 89% were recorded depending on disease severity. This implies YMV on white yam is economically important. This study is the first of such in Ghana. Efforts to control yam mosaic virus disease through the application of biotechnology to produce virus-free planting materials as well as the use of resistant varieties should be intensified to improve yield, thereby increase income of resource-limited yam farmers.

Key words: Dioscorea rotundata, Yam mosaic virus, disease severity, tissue culture, yield

 

Résumé

L'impact du virus de la mosaïque d'igname sur (VMI) le rendement des tubercules d'igname blanche (Dioscorea rotundata Poir) dans la zone forestière du Ghana a été évalué dans un environnement contrôlé et sur le champ à Kumasi, au Ghana. Deux essais sur le champ ont été réalisés en 2001 et 2002. L'expérience dans un environnement contrôlé a été menée en

2003. Dans l'environnement contrôlé, l'igname blanche développée à partir de la culture in vitro a été mécaniquement inoculé avec des extraits de sève de VMI feuilles infectées. Les plantes inoculées ont été cultivées à côté de VMI ignames blanches infecté non nettoyées avec la culture in vitro ainsi que des témoins sains non inoculés nettoyés avec la culture in vitro et virus indexé. Dans l'essai sur le champ, les données prises étaient infecté gravement de la maladie et le rendement par plante après la récolte. Plantes issues de l'igname sain non nettoyé avec la culture de in vitro ont montré des symptômes sévères de VMI avec une perte de rendement de 53% contre 28% pour les plantes inoculées. Dans les deux essais sur le champ en 2001 et 2002, la moyenne des pertes de rendement entre 26,0% et 89% ont été enregistrés selon la gravité de la maladie. Cela implique que le VMI sur l'igname blanche est économiquement importante. Cette étude sont les premiers d’une telle au Ghana. Les observations faites dans cette étude sont les premiers d'une telle au Ghana. Les efforts visant à contrôler la maladie du virus de la mosaïque d'igname par l'application de la biotechnologie pour produire du matériel végétal exempt de virus devraient être intensifiés pour améliorer le rendement, ainsi augmenter le revenu des agriculteurs d'igname qui ont des ressources limitées.

 

Mots clés: Dioscorea rotundata, le Virus de la Mosaïque d'Igname, ELISA, la gravité de la maladie, le rendement, la culture in vitro

 

Performance of Five Bambara Groundnut (Vigna subterranea (L.) Verdc.) Landraces in the Transition Agroecology of Ghana under different Sowing Dates.

J. N. Berchie1, H.A. Dapaah1, A. Agyeman1, J. Sarkodie-Addo2, J. K. Addo1, S. Addy1, and E. Blankson1

1CSIR - Crops Research Institute, Kumasi-Ghana

2Dept of Crop and Soil Sciences, Kwame Nkrumah University of Science and

Technology (KNUST), Kumasi-Ghana

 

Abstract

Received: 4th November 2015 Accepted: 16th May 2016

Drought associated with climate change is a potential threat to agriculture and food security in many sub-Saharan African countries. The need to promote drought tolerant crop cultivars acceptable to consumers cannot be overemphasized. Bambara groundnut is an underutilized and until lately, under researched crop. Its ability to produce some yields where other crops such as groundnut fail has been established. The balanced nutritional quality of the crop coupled with its tolerance to drought makes it a crop of choice to achieve food security especially in the dry areas of Africa. With the threat of climate change and its attendance drought coupled with the drying up of water bodies even when irrigation facilities are available, research on crops with inherently drought tolerant characteristics cannot be overemphasized. Sowing dates have been identified to affect the yield of the crop. Experiments were conducted in 2007 in Wenchi in the Transition agroecology of Ghana to determine the effect of sowing dates on the yield of bambara groundnut landraces namely; Burkina, NAV 4, NAV Red, Black eye, Tom, Mottled Red and Ada. Sowings were done in a factorial arrangement in a randomized complete block design with three replications. Pod and seed yields ranged between 600 kg/ha to 5.5 t/ha and 420 kg/ha to 3.8 t/ha, respectively for the various sowing dates. Pod yield of over 5 t/ha was produced by Burkina and Black eye. Pod harvest indices ranged from 0.12-0.53. Minor rainy season sowing of bambara groundnut in Ghana produced more pod yield than major rainy season sowing as shown by the August sowing. Tom was a highly vegetative landrace. Where irrigation is available, sowing bambara groundnut just before the rains in February in the Transition agro-ecology of Ghana produce high pod yields. Crop growth rate was highest for NAV Red (0.089 t/ha/d) and least with Tom (0.059 t/ha/d).

Keywords: Bambara groundnut, Transition agro-ecology, landraces, sowing date

Résumé

La sécheresse associée au changement climatique est une menace potentielle pour l'agriculture et la sécurité alimentaire dans de nombreux pays d'Afrique sub-saharienne. La nécessité de promouvoir les cultures tolérantes à la sécheresse, acceptables pour les consommateurs ne peuvent pas être sur estimée. L'arachide de Bambara est un sous-utilisé et jusqu'à ce que ces derniers temps, sous recherché. Sa capacité à produire des rendements où d'autres cultures comme l'arachide échouent a été établi. La qualité nutritionnelle équilibrée de la culture associée à sa tolérance à la sécheresse, donne une culture de choix pour assurer la sécurité alimentaire, en particulier dans les zones sèches d'Afrique. Avec la menace du changement climatique et de sa sécheresse de présence associée à l'assèchement des masses d'eau, même lorsque les installations d'irrigation sont disponibles, la recherche sur les cultures ayant des caractéristiques résistantes à la sécheresse en soi ne peut pas être sur estimée. Dates de semis ont été identifiés pour affecter le rendement de la récolte. Des expériences ont été menées en 2007 à Wenchi dans la transition agro-écologie du Ghana pour déterminer l'effet des dates sur le rendement des variétés locales d'arachide de bambara à savoir; 'Burkina', 'NAV 4', 'NAV Red', 'Black eye', 'Tom', 'Mottled Red' et 'Ada'. Les semis ont été effectués dans un arrangement factoriel dans un bloc complet randomisé

avec trois répétitions. La gousse et le rendement en graines se situaient entre 600 kg / ha à 5,5 t / ha et 420 kg / ha à 3,8 t / ha respectivement pour les différentes dates de semis. Le rendement de la gousse de plus de 5 t/ha a été produit par le 'Burkina' et le 'Black eye'. Les indices de la cosse de récolte allaient de 0,12 à 0,53. La saison des pluies mineure de semis d'arachide de bambara au Ghana a produit plus de rendement des gousses que la saison majeur des pluies de semis comme montre le semis du mois Août. La variétéTom était une variété locale très végétative. Là où l'irrigation est disponible, les semailles d'arachide de bambara juste avant les pluies en Février dans la transition agro-écologie du Ghana produisent des rendements élevés des gousses. Le taux de croissance des cultures était le plus élevé pour la variété 'NAV Red' (0,089 t/ ha/j) et moins pour la variété 'Tom' (0,059 t / ha / j).

Mots-clés: Arachide de Bambara, transition agro-écologie,les variétés locales, date de semis

 

Physical, Functional and Cooking Characteristics of Six Newly Released Cowpea (Vignaunguiculata[L]Walp) varieties in Ghana

J. K. Addo,1 S. Amoah,1 A. M. Boateng,1 H. Okyere,1

H. Adu-Dapaah,1 and A. Amoa-Owusu1

1CSIR - Crops Research Institute, Ghana

 

Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Received: 11th February 2016 Accepted: 6th June 2016

Abstract

As part of the innovative platform in varietal development and biodiversity, the CSIR - Crops Research Institute has released four cowpea varieties (Hans Adua, Nketewade, Zamzam and Agyenkwa). For consumer and end-use indices there is the need therefore to evaluate these newly released cowpea varieties alongside two previously released varieties(Asomdwee and Hewale), for their proximate composition, horticultural characteristics, bulk densities, hydration behavior and cooking characteristics to elicit data to support its broadened utilization. Approved methods of the AAAC, (2000) were used in determining percent crude protein, moisture, ether extract, crude ash, and carbohydrate content which ranged from

22.41 - 25.46, 7.41 - 11.37, 1.54 - 2.44, 2.71 - 3.07 and 57.61 - 63.17 % respectively. Total energy ranged between 337.54 and 350.98 kcal. Cooking time, Water UptakeRatio, Volume Expansion Ratio, Gruel solid loss, hydration capacity and Index, Swelling capacity ranged from 25.00 - 42.50 min, 1.14 - 1.32, 2.07 - 2.29, 0.27 - 0.78 g, 0.12 - 0.17 g/seed, 0.83 - 1.01,

0.270.35 mL/seed respectively.Flours' bulk densities, true densities and porosities ranged from 0.67 0.72 g/cm3, 0.37 0.47 g/cm3 and 98.03 98.93 % respectively.Horticultural characteristics seed shapes were described as kidney, ovoid and rhomboid. Seed coat texture were smooth; seed coat colour were whitish; seed sizes ranged between 123.30 - 301.86 mm3.From the results, these cowpeavarietiescould serve as a good template and a potential functional ingredient for a lot of aqueous and non-aqueous food formulations both in food and non-food utilization.

Keywords: physico-chemical, horticultural, gruel solid loss, water uptake, bulk density. Résumé

Dans le cadre de la plate-forme d'innovation dans le développement des variétés et de la

biodiversité, le CSIR - Crops Research Institute a homologué quatre variétés de niébé (Hans - Adua, Nketewade, Zamzam et Agyenkwa). Pour les consommateurs et l'utilisation finale des indices il est nécessaire donc d'évaluer ces variétés de niébé nouvellement homologués aux côtés de deux variétés précédemment homologuées (Asomdwee et Hewale), pour leur composition immédiate, caractéristiques horticoles, les densités en vrac, le comportement d'hydratation et les caractéristiques de cuisson pour obtenir des données soutenir son utilisation élargie. Pourcentage de protéines brutes, l'humidité, extrait à l'éther, cendres brutes, et la teneur en hydrates de carbone variaient de 22,41 à 25,46, 7,41 à 11,37, 1,54 à

2,44, 2,71 à 3,07 et de 57,61 à 63,17%, respectivement. L'énergie totale se situait entre

337,54 et 350,98 kcals. Le temps de cuisson, Ratio d'absorption d'eau, Ratio d'expansion du volume, Gruau perte solide, capacité d'hydratation et de l'indice, la capacité gonflement variaient de 25,00 à 42,50 min, 1,14 à 1,32, 2,07 à 2,29, 0,27 à 0,78 g, 0,12 à 0,17 g/semences,

0,83 - 1,01, 0,27 à 0,35 ml /semences respectivement. Densités en vrac, véritables densités et porosités de farines variaient de 0,67 à 0.72 g/cm3, 0,37 à 0,47 g/cm3 et de 98,03 à 98,93%, respectivement. Caractéristiques horticoles - formes de semences ont été décrits comme les reins, ovoïde et rhomboïde. Le texture manteau de graine étaient lisses; la couleur du pelage des semences étaient blanchâtres; tailles de semences variaient entre 123,30 à 301,86 mm3.A partir des résultats, ces variétés de niébé pourraient servir comme un bon modèle et un ingrédient fonctionnel potentiel pour un grand nombre de formulations alimentaires aqueuses et non aqueuses tant dans les aliments et l'utilisation non-alimentaire.

Mots-clés: physico-chimique, l'horticulture, du gruau perte solide, absorption d'eau, expansion du volume, la densité en vrac.

 

Production and Marketing Challenges of Vegetable Farming: A case study of

Kumasi Metropolis of Ashanti Region, Ghana

1S.K. Darkey*, 2E.L. Okorley, 2N.A. Gyimah, 3F.A. Bluwey and 1B.M. Dzomeku

1CSIR - Crops Research Institute, P. O. Box 3785, Kumasi, Ghana, West Africa.

2Department of Agricultural Economics and Extension, PMB, University of Cape Coast, Ghana.

3University of Education, Winneba, P. O. Box 25, Winneba, Ghana

 

*Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 16th February 2016 Accepted: 14th April 2016

Abstract

The availability of large markets in urban communities has given cities enormous potential for food production especially vegetables. This potential partly accounts for mass exodus of people into cities. Poverty is however accompanying urbanisation but food production potential of cities could reduce urban poverty. This study assesses the production and marketing challenges of urban vegetable production in the Kumasi Metropolis of the Ashanti Region, Ghana. A simple random sampling technique was used to select a sample of 300 urban vegetable farmers from the study area. A structured interview schedule was used to collect data for analysis. Vegetable producers were basically smallholder farmers with land sizes between 0.1 and 3.2 ha. The result also revealed that greater proportion of cultivated land was put to leafy vegetables (lettuce, cabbage and spring onions). Again, majority (97.3 percent) of the respondents disposed of their produce through middle men at the farm gate level. The Kendall's coefficient of concordance analysis also showed that there was 51.8 percent agreement among respondents on the ranking of vegetable production challenges they encountered at 5 percent significant level. On the contrary, only 40.8 percent among the respondents agreed on the ranking of the marketing challenges they were confronted with. Agricultural extension training and education on innovative agricultural practices would increase farmers' income and enhance their livelihood. This study seeks to identify the production and marketing constraints urban vegetable farmers face in the Kumasi Metropolis of Ashanti Region, Ghana.

Keywords: Urbanisation, urban vegetable farmers, urban poverty, production, respondents

 

Résumé

La disponibilité des grands marchés dans les communautés urbaines est un facteur qui a fait des villes d'avoir un énorme potentiel de production alimentaire en particulier les légumes. Ce potentiel explique en partie l'exode massif de personnes dans les villes. La pauvreté, cependant accompagne l'urbanisation, mais la production alimentaire dans les villes pourraient réduire la pauvreté urbaine. Cette étude évalue les défis de la production et commercialisation végétale urbaine dans la métropole de Kumasi, de la région d'Ashanti, au Ghana. Une technique d'échantillonnage aléatoire simple a été utilisée pour sélectionner un échantillon de 300 producteurs de légumes urbains de la zone d'étude. Un entretien structuré a été utilisé pour recueillir des données pour l'analyse. Les producteurs de légumes ont été essentiellement les paysans avec des tailles de terres entre 0,1 et 3,2 ha. Le résultat a également révélé qu'une plus grande proportion de terres cultivées a été mise à légumes à feuilles (laitue, le chou et les ciboules). Encore, la majorité (97,3 pour cent) des répondants disposés de leurs produits par le biais d'intermédiaires au niveau de la ferme. Le coefficient de Kendall de l'analyse de concordance a également montré qu'il y avait 51,8 pour cent accord chez les répondants sur le classement des défis de production de légumes qu'ils ont

rencontré à 5 pour cent niveau significatif. Au contraire, seulement 40,8 pour cent chez les répondants étaient d'accord sur le classement des défis de marketing auxquels ils étaient confrontés. La formation de vulgarisation agricole et de l'éducation sur les pratiques agricoles novatrices pourraient augmenter les revenus des agriculteurs et à améliorer leurs moyens de subsistance. Cette étude vise à identifier les contraintes de production et de commercialisation que des maraîchers urbains font face dans la métropole de Kumasi, de la région d’Áshanti, au Ghana.

Mots-clés: Urbanisation, agriculteurs potagers urbains, la pauvreté urbaine, la produc- tion, les répondants

Books, Journals & Abstracts

Aboagye, L. M. Obiri-Opareh, N. Amissah, L. and Adu-Dapaah H.  2007. Analysis of Existing Policies that Enable or Inhibit the Wider Use of Underutilized Plant Species. (GFU). Via dei Denari, 472a. Maccarese, Fiumicino, Haly 29p.

Aboagye, L. M., Amenorpe, G and Adu-Dapaah H. 2006. Collection, Characterization, Evaluation and Utilization of Heat and Drought Tolerant Cowpea and Groundnut. AgSSIP Competitive Research Project (268). A consultancy Report Submitted to AgSSIP, CSIR, Accra 31p

Acheampong P. P., Dankyi A.A,  Adu- Dapaah  H.,. Frimpong B.N, Osei-Adu  J. and Asante B. O. (2010). Cluster Initiatives in Ghana: the way forward for Economic Development and poverty alleviation. Paper presented at the 2nd Pan African Competitiveness Forum, Elmina, Ghana. February 14th to February 18th 2010.

Acheampong, P. P. (2000). “Comparative analysis of rice production under the traditional and improved (sawah) systems”. BSc Dissertation, Kwame Nkrumah University of Science and Technology.

Acheampong, P. P. (2002). “Does Inflation Promote Economic Growth? Evidence from Ghana”. MSc Dissertation, University of Hull, UK.

Adofo, K., Heusden, Adriaan W., van, Vosman, Ben, and Adu-Dapaah, H. 2009. Thrips (Megalurothrips Sjostedti) Tolerant Cowpea (Vigna unguiculata (L.) Walp) for Improved Nutritional Status and Livelihood in West Africa.

Adu-Dapaah H., Quain M.D., Asibuo J.Y.,  Parkes E.O., Thompson, R. Adofo-Boateng P., Asafu-Agyei J.N. and S. Addy (2009).  Harnessing Biotechnology for Food Security in Ghana. Proceedings of 1st All African Congress on Biotechnology. 22nd – 26th September 2008. Nairobi, Kenya. Nzumah, J.M. and M’mboyi, F. (eds) pp 559-561.

Adu-Dapaah H.K, (1993). Biological Nitrogen-Fixation. CRI- Crop Management Research Guide. No: 35. Quansah C., Sarfo E.Y (eds) 36pp.

Adu-Dapaah H.K, and Djagbletey D. (1997). Monitoring report on EU/IITA on-farm adaptive research project on cowpea and rice production in the Gambia. Submitted to: International Co-operation programme of the International Institute of Tropical Agriculture (CIITA), Ibadan, Nigeria.

Adu-Dapaah, H. K. and Oppong–Konadu E.Y. (2002). Tomato production in four major tomato growing districts in Ghana: Farming practices and production constraints. Ghana Jnl. agric Sci. 35:11-22.

Adu-Dapaah, H. K., Asumadu, H, Lamptey J. N. L., Haleegoah, J., and Asafo-Adjei B.  (2007).   Farmer Participation in Groundnut Varietal Selection. In: African Crop Science Proceedings, El-Minia, Egypt, 27-31, October 2007. K. Z. Ahmed. M. M. Abdel-Hakim, S. I. Shabali El-Morsi A. -Morsi, H. A. M. Ismael eds  Vol. 8. Pp 1435-1439.

Adu-Dapaah, H., Afun J.V.K., Asumadu, H. Padi, F and Gyasi-Boakye, (2005). Cowpea production guide.  C. Oti-Boateng (ed) 42pp.

Adu-Dapaah, H., M. Quain, J.N. Asafu-Agyei, J.Y. Asibuo, S.Y. Opoku and B. Adjei-Debrah. (2006). Country report on agricultural biotechnology. Paper presented at the launching of Agricultural Biotechnology Network in Africa (ABNETA) Project in collaboration with FAO. 21st-22nd March, 2006. In press.

Adu-Dapaah, H.K and Asibuo, J.Y. (2006).  Genetic variation in agronomic traits of Bambara groundnut induced by seed irradiation and ethylmethane sulphanate (EMS) treatment. Submitted to West African J. Applied Ecology. (In press).

Adu-Dapaah, H.K, Afun, J.V.K., Adams, F.,Eledi, E.D. and Oti-Boateng, C.   (2001). Groundnut Production Guide. A Technological Package for Agricultural Extension Agents and Farmers, Osei, C.K., Berchie, J.N. and Gyasi Boakye (eds). 16 pp. Published by Food Crops Development Project.

Adu-Dapaah, H.K, Ahenkora, K. and Ansere-Bioh, F.  (2004). Farmer Participation in Dual-Purpose Cowpea Genotype Selection in the Upper West Region of Ghana. In: Proceedings of International Symposium on Participatory Plant Breeding and Participatory Plant Genetic Resource Enhancement: An Africa-wide Exchange of Experiences. Sperling, L., Lancon, J. and Loosvelt, M. (eds) WARDA, Mbe,  Cote D’Ivoire, May 7-10 2001.  pp 131-135.

Adu-Dapaah, H.K, Ellis, W.O Biney, K and Amoah S. (2007). On-farm yield and evaluation of exotic and local tomato varieties for adaptability, processing qualities in five major tomato growing districts in Ghana. Botswana Journal of Agriculture and Applied Sciences 3(1) 34-44.

Adu-Dapaah, H.K, Hemeng, O.B. Plantain improvement. 1996. CRI Crop management research training guide. No: 73. Ben Banful, Ashiamah, S.R.K. Berchie, J.N. (eds)

Adu-Dapaah, H.K, Singh, B.B., Chheda, H.R. and Fatokun, C.A. (1988): Heterosis and Inbreeding Depression in Cowpea. Tropical Grain Legume Bulletin 35:23-27.

Adu-Dapaah, H.K. (1998). Final technical report submitted to IAEA, Vienna following the Award of IAEA fellowship to Indian Agric Research Institute, New Delhi.

Adu-Dapaah, H.K. (2005): Biotechnology, no quick fix for food security, A report presented in response to the press release by Friends of the Earth, Ghana 11pp. Submitted to the DG for onward delivery to the Hon. Minister for Environment and Science.

Adu-Dapaah, H.K. Ahenkora, K., Asafo-Adjei, B., Adjei, J. and Asafo-Agyei, J.N. (2005). Performance of some local and improved cowpea lines as dual purpose (leaf/fodder and grain) Ghana J. Agric. Sci. (NARS Edition 1). 155-160.

Adu-Dapaah, H.K. and Asare, E.O. (1995). Cocoa pod ash as a source of potash fertilizer. pp. 157-163. In: Proceedings of Seminar on Organic and Sedentary Agriculture, Accra, Ghana, 1-3 November 1995. Akita, V., Schodder, P., and Bemile, S. K. (eds.).

Adu-Dapaah, H.K. and Asare, E.O. (1997): Response of Maize to Cocoa Pod Ash and Muriate of Potash. pp. 228-233. In Proceedings of a Regional Maize Workshop, IITA, Cotonou, Benin Republic, 29th May-2nd June 1995. Badu-Apraku, B., Akoroda, M.O., Ouedraogo, M. and Quin, F.M. (eds.)

Adu-Dapaah, H.K. and Oppong-Konadu, E.Y.  (1997). Feasibility Report on Tomato Outgrower Farmer Scheme in Ashanti and Brong Ahafo Regions. Prepared for Afrique Link Limited, 66 pp.

Adu-Dapaah, H.K. and Oppong-Konadu, E.Y. (2001). Breeding for drought tolerance in crops. Journal of Applied Science and Technology 6:116-122.

Adu-Dapaah, H.K. and Sangwan R.S. (2003). Agronomic and biotechnological approaches to Bambara groundnut improvement. In: Proceedings of the International Bambara Groundnut Symposium. 8th –12th August, 2003. at Botswana College of Agriculture, Gaborone, Botswana. pp 245-254

Adu-Dapaah, H.K. and Sangwan R.S. (2004). Improving Bambara groundnut productivity using gamma irradiation and in vitro techniques. African Journal of Biotechnology. 3(5): 260-265.

Adu-Dapaah, H.K. Oppong-Konadu, E.Y. and Asafo-Adjei, B. (1997). Biodiversity, Sustainable, Agriculture and Food Security in sub-Saharan Africa pp. 34-38. In Proc. International Seminar on Sustainable Rural Development in sub-Saharan Africa 21-25 July, 1997, Kumasi. Ghana.

Adu-Dapaah, H.K., Addy, S.N.T.T., Asibuo, J.Y., Asafo-Agyei, B., Addo, J.K., Asumadu, H., Owusu-Akyaw, M., Lamptey, J.N. and Agyeman, A.  (2009). Improving farmer preferred cowpea varieties through introgression of genes for flower thrips and Cercospora leaf spot resistance.  Paper presented at Programme for Africa’s Seed Systems (PASS) Grantees meeting 5-8 October, 2009, Bamako, Mali.

Adu-Dapaah, H.K., Ahenkora, K., Asafo-Adjei, B. and Adjei, J., (2000).  Phenotypic Performance of Dual Purpose (grain and Leaf/fodder) Cowpea genotype in Ghana .p. 171.3rd International Crop Science Congress, 2000 ICSC. Abstracts 17-22 August, 2000. Hamburg, Germany.

Adu-Dapaah, H.K., Ahenkora, K., Asafo-Agyei, B. and Adjei, J. (1998).     Performance of Some Local Improved Cowpea Lines as a dual Purpose (Leaf/Fodder and Grain) Crop. First Biennial National Agricultural systems Workshop, Accra. Ghana 16-20th November 1998.

Adu-Dapaah, H.K., Ahenkora, K., Asibuo, J.Y. and Oppong Konadu, E.Y.(2003).The potential of cowpea leaves as leafy vegetable in Ghana. Ghana Journal of Horticulture. 3: 101-107.

Adu-Dapaah, H.K., Ahenkora, K., Asibuo, J.Y. and Oppong-Konadu, E.Y. (2003).The potential of cowpea leaves as leafy vegetable in Ghana. Ghana Journal of Horticulture. 3: 101-107.

Adu-Dapaah, H.K., Akromah, R and L.M. Aboagye. (2007). Sustainable use of plant genetic resources for food security: The linkage between plant breeders and genebanks. Pp193-199.In Plant genetic resources and food security in West and Central Africa. R. Vodouhe, K. Atta-Krah, G.E. Achigan-Dako, O. Eyog-Matig and H. Avohou. (eds).Regional Conference, 26-30 April 2004.

Adu-Dapaah, H.K., Akromah, R. and Aboagye, L.M.  (2004). Collaboration and partnership between gene banks and breeders: The case of genetic resources conservation and use in Ghana. Proceedings of the International Conference on Plant Genetic Resources of West and Central Africa, IITA, Ibadan, Nigeria 26th – 30th April, 2004. (In press)

Adu-Dapaah, H.K., Asafo-Adjei, B., Adjei, J. and Ahenkora, K. (1997). Dual-Purpose Cowpea for Humans and Livestock, CORAF Action 3:2-3.

Adu-Dapaah, H.K., Asafo-Adjei, B., M., Asiedu, E.A., Owusu-Akyaw M. and Amoah, S. (2004). Sustainable soybean production in Ghana. Paper presented at the Garden City Radio on 22nd May 2004. 8pp.

Adu-Dapaah, H.K., Asafu-Agyei, J.N., Asumadu, H., Asibuo, J.Y., Danquah, O.A., Haleegoah, J., Asafo-Adjei, B. and Amoah, S.  (2004) Farmers expectations met: groundnut rosette resistant varieties developed with farmers. Poster presented at the 4th International Crop Science Congress, 26th September–1st October, 2004, Brisbane Exhibition Centre, Australia.

Adu-Dapaah, H.K., Asibuo, J.Y., Asafo-Adjei, B., Amoah, S., Asafu-Agyei, J.N., Ntare, B., Asumadu, H., Osei-Bonsu, P., Osei-Yeboah, S.Y., Danquah, O-A., Owusu-Akyaw, M., Bediako, A., Lamptey, J.N., Anchirinah, J., Haleegoah, J., Asiedu, E.A., Plahar, W.A. Annan, N., Agyeman, A., Donkor, J., Acquah, M. and Addo, J.K. (2005).  Breeding methodology, botanical and agronomic characteristics of four groundnuts varieties proposed for release 24 pp.

Adu-Dapaah, H.K., Asibuo, J.Y., Asafo-Adjei, B., Amoah, S., Asafu-Agyei, J.N., Asumadu, H., Osei-Bonsu, P., Osei-Yeboah, S.Y., Danquah, O-A., Owusu-Akyaw, M., Lamptey, J.N., Anchirinah, V., Haleegoah, J., Asiedu, E.A., Annan, N., Agyeman, A., Adu, M.K., Acquah, M., and Addo, J.K. (2005).  Breeding methodology, botanical and agronomic characteristics of two soybean genotypes proposed for release. Pp 42-61

Adu-Dapaah, H.K., Asibuo, J.Y., Asafo-Agyei, B and Addy, S. (2009). Stability of performance of local and elite cowpea lines under two spraying regimes in Ghana.  Paper presented at 9th African Crop Sciences congress, 28th September to 1st October, 2009, Cape Town, South Africa (In Press).

Adu-Dapaah, H.K., Asibuo, J.Y., Danquah, O-A., Asumadu, H., Haleegoah, J. and Asafo-Adjei, B. (2004). Farmer participation in groundnut rosette resistant varietal selection in Ghana. In: Fisher et. al. (eds) New directions for a diverse planet: Proceedings of the 4th International Crop Science Congress, Brisbane, Australia, 26th  September – 1st October, 2004.

Adu-Dapaah, H.K., Asibuo, J.Y., Danquah, O-A., Owusu-Akyaw, M., Haleegoah J. and Amoatey, H. (2004) Bambara groundnut improvement through mutation breeding in Ghana. In: Proc. Final Research Coordination Workshop on Genetic improvement of under utilized and neglected crops in low income food deficit countries through irradiation and related techniques. Pretoria, South Africa. 19-23 May, 2003 pp37-48.

Adu-Dapaah, H.K., Asumadu, H., Asafo-Adjei B., Amoah S., Haleegoah J., Asafu-Agyei J.N, Bolfrey-Arku G, Ohemeng-Dapaah S and Asibuo J.Y. (2005). Farmer participation in multi-purpose cowpea varietal selection in Ghana. In: Proceedings International Edible Legumes Conference and Fourth World Cowpea Congress.17-21April 2005. Pretoria, South Africa.

Adu-Dapaah, H.K., Cobbina, J, and Asare, E.O.. (1994). Effect of Cocoa Pod Ash on the Growth of Maize. Journal of Agric. Science, (Camb) 122:31-33.

Adu-Dapaah, H.K., Danquah, A.O., Haleegoah, J. and Asibuo, J.Y. (2000). Improving bambara groundnut productivity through mutation breeding and in vitro techniques. Paper presented at the 2nd Research Coordination Conference, 26-30 June, 2000, San Jose, Costa Rica.

Adu-Dapaah, H.K., Ennin, S.A., Anchirinah, V.M. and Otoo, E. (2005). Business plan for the cultivation and processing of groundnut, sunflower and soybean into oil and other derivatives prepared for Nsutaman Limited. 28pp

Adu-Dapaah, H.K., K. Adofo, J.N. Asafu-Agyei. (2007).  The role and importance of agriculture in sustainable national development. Proceedings of the Sunyani Polytechnic Lecture Series II, Sunyani Polytechnic Conference Room, 24th-27th September, 2006. Agriculture Science and Technology for Wealth Creation and Sustainable Development in Ghana. Eds K. Nsiah Gyabaah, Mary Agyapong and Anim. Pp 166-181

Adu-Dapaah, H.K., Oppong-Konadu, E.Y. Akromah, R. and Okai, E. (2002). Efficient Management and Utilization of Plant Genetic Resources based on SDS-PAGE of Cowpea Seed Protein. 1st International Workshop on Plant Resources of Tropical Africa, 23-25 September 2002, Nairobi, Kenya.

Adu-Dapaah, H.K., Otoo, E. and Ofori J. (2001). Screening of Improved Cowpea  Lines  in Inland Valleys in Ghana. pp. 128-133. In: Proc. International Workshop on Integrated Watershed Management of Inland Valley-Ecotechnology Approach, 6th-8th February 2001, Novotel, Accra, Ghana. T. Wakatsuki, E. Otoo, W.E.I. Andah, J. Cobbina and D. Kubota (eds).

Adu-Dapaah, H.K., Owusu-Akyaw, M.., Asiedu, E.A., Asafo-Adjei, B. and Amoah, S. (2004). Sustainable groundnut production in Ghana. Paper presented at the Garden City Radio on 29th May and 5th June, 2004. 8pp.

Adu-Dapaah, H.K., Owusu-Akyaw, M.., Asiedu, E.A., Asafo-Adjei, B. and Amoah,S. (2004). Sustainable cowpea production in Ghana. Paper presented at the Garden City Radio on 17th April, 2004. 8pp.

Adu-Dapaah, H.K., Singh, B.B., and Fatokun, C.A. (1994).  Male Sterility  in  Cowpea. pp. 30-36. In. Proc. 1st National Workshop on Food and Industrial Crops, October 25-27, 1994, Kumasi, Ghana.(Doku, E.V. ed.).

Adu-Dapaah, H.K., Singh, B.B., and Fatokun, C.A. (1999): Complete Sterility Studies in Three Cowpea (Vigna unguiculata (L.) Walp) Mutants. Ghana Journal of Science, 39: 17-22.

Adu-Dapaah, H.K., Singh, B.B., Fatokun, C.A. (1999). A fascinated mutant in cowpea.  Vigna unguitulata (L.) Walp.  Acta Agronomica, Hungarica. 47 (4) 371-    376.  Asafo-Adjei, B., Marfo, K.O. and Adu-Dapaah, H.K (1998) Groundnut production constraints in Ghana: A challenge to research. International Arachis     Newsletter 18: 68-69.

Adu-Dapaah,, H.K, Berchie, J.N., Dankyi A.A., Plahar W.A., Nelson-Quartey F., Addo J.K., Haleegoah J., Asafu-Agyei J.N. and Adu E.O. (2007). Indigenous knowledge of Bambara groundnut production, marketing and consumption in Ghana. (In press).

Adu-Mensah J, Owusu-Akyaw M, Mochiah M. B. (2005). Insect pests of dried cassava (“kokonte”) in Ashanti and Brong Ahafo regions of Ghana Ghana Journal of Agricultural Science

Afun, J.V.K. Adu-Dapaah H.., Asumadu, H. Padi, F and Gyasi-Boakye, (2005). Guidelines for safer use of pesticides C.Oti-Boateng (ed) 30pp.

Ahenkora, K., Adu-Dapaah, H.K, Ansere-Bioh, F. and Adjei, J. (1997).Breaking Hunger with Dual-Purpose Cowpeas in Ghana. Vol. 3: 1421-1426. In: Proceedings African Crop Science Conference, Pretoria 13-17 January 1997. Adipala, E.Tenywa, J.S. and Ogenga-Latigo, M.W. (eds).

Ahenkora, K., Adu-Dapaah, H.K. and Agyemang, A. (1998). Selected nutritional components and sensory attributes of cowpea (Vigna unguiculata, L. Walp.) leaves. Journal of Plant Foods for Human Nutrition. 52:221-229

Ahenkora, K., Adu-Dapaah, H.K., Asafo-Adjei,  B. Asafu-Agyei, J.N. Adjei, J. and Oppong-Konadu, E.Y., (1998). Protein Productivity and Economic Feasibility of Dual-Purpose Cowpea. Hort Science 33 (7): 1160-1162.

Ahenkora, K., S. Twumasi-Afriyie, P.Y.K. Sallah, & K. Obeng-Antwi, 1999. Protein nutritional quality and consumer acceptability of tropical Ghanaian quality protein maize.  Food and Nutrition Bulleting, 20 (3): 354-360.

Ahenkora, K.; Dadzie, M. and Osei-Bonsu, P.  1999. Composition and functional properties of raw and heat processed velvet bean (Mucuna pruriens (L.) DC var utilis) flours. International Journal of Food Sciences and Technology. (34) 131-135.

Annan-Afful, E. and T. Wakatsuki. Changes in selected soil properties as influenced by land use in the Inland Valley Watersheds of Ashanti Region,  Ghana. Abstract of the Annual  meeting of Japanese Society of Soil Science and Plant  Nutrition, Vol. 48 (August, 2003), pp   181

Annan-Afful, E. and T. Wakatsuki. General Soil Fertility Status of an Inland Valley Watershed. Abstract of the Annual meeting of Japanese Society of Soil Science and Plant  Nutrition, Vol. 47 (April, 2001), pp 199

Annan-Afful, E. and T. Wakatsuki. Influence of Toposequence and Land use on the soil properties of Inland Valley Watersheds of Ashanti Region, Ghana. Abstract of the Annual meeting of Japanese Society of Soil Science and  Plant Nutrition, Vol. 48 (April, 2002), pp  138

Annan-Afful, E. and T. Wakatsuki. Vegetational and Plant Nutritional Characterization of an Inland Valley Watershed in Ashanti, Ghana. Abstract of the Annual Meeting of Japanese  Society of Soil Science and Plant Nutrition, Vol.46 (April, 2000), pp 178

Anon, (2000). Draft Report on the pre-feasibility studies on the crop production component of the Bui Project. 12pp. Submitted to River Valley Development Limited-Bui Irrigation, Water Supply and Integrated Agriculture

Asafo-Adjei B., Atuahene-Amankwaa G., Adu-Dapaah, H.K., Adjei. J., Owusu-Akyaw, M., Afun, J.V.K. and Osei Bonsu P. (1999).  Some Agronomic and physico-chemical characteristics of two cowpea varieties proposed for released on 27th August, 1999 at Crops Research Institute. Report on second inspection of two cowpea varieties for release.

Asafo-Adjei, B., and Adu-Dapaah, H.K (1999). Final technical report on NARP Legume/Crops Programme. Submitted to: NARP- secretariat, Accra

Asafo-Adjei, B., Atuahene Amankwaa, G., Marfo, K.O., Hossain, M.A., Owusu-Akyaw, M. and Adu-Dapaah, H.K, (1994). Strategies for Improving Cowpea and Soybean Production in Ghana. First National Workshop on Food and Industrial Crops, Kumasi, October 25-27, 1994.

Asafo-Adjei, B., Atuahene-Amankwa, G., Ennin-Kwabia, S., Adu-Dapaah, H.K, Hossain, M.A. and Soza, R.F. (1995). Grain Legumes Research and Production in Ghana.p.45. In Agronomy Abstracts, Crop Science Society of America.

Asafo-Agyei, J.N., Dapaah, H.K., Ennin, S.A. and  Adu-Dapaah, H.K (2002).Yield. Determinants of Intercropped Maize and Cassava.  Agricultural and Food Science Journal of Ghana.  1:55-64.

Asante I.K. Adu-Dapaah, H.K and Acheampong A.O. (2004) Determination of some mineral components of cowpea (Vigna unguiculata (L) Walp) accessions using instrumental neutron activation analysis. Submitted to Tropical Science.

Asante M.D., Akromah R., Dartey P.K.A. and Ofori J. (2006). Inheritance of spikelet fertility in two rice crosses. Journal of Science and Technology, 26 (3), 44-45.

Asante M.D., Dartey P.K.A, Akromah R and Ofori J. (2007). Genetic analysis of grain size and shape in two rice crosses. Journal of Ghana Science Association, 9 (1), 20-27.

Asante MD, Akromah R, Dartey PK (2006). Inheritance of spikelet fertility in two rice crosses. Journal of Science& Technology. 26(3): 40-45

Asante MD, Dartey PK, Akromah R (2007). Genetic analysis of grain size and shape in two rice crosses. Journal of The Ghana Science Association. 9(1): 20-27

Asante MD, Kovach M, Huang L, Harrington S, Dartey PK, Akromah R, Semon M, McCouch S(2010). The genetic origin of fragrance in NERICA1. Molecular Breeding 10.1007/s11032-009-9382-8

Asante MD,  Kovach MJ, Huang L, Harrington S, Dartey PK, Akromah R, Semon M, McCouch S (2009). The genetic origin of fragrance in NERICA1. Molecular Breeding (online). DOI 10.1007/s11032-009-9382-8.

Asante, I.K, Adu-Dapaah, H.K and Addison P. (2004). Seed weight, protein and tannin contents of 32 cowpea accessions in Ghana. Tropical Science. 44: 77-79.

Asante, I.K. Adu-Dapaah, H and Addison, P.  (2006). Variation in crude protein and mineral elements in 32 cowpea (Vigna unguiculata (L) Walp) accessions in Ghana. Ghana Jnl. Agric Sci. 39:83-86.

Asibuo, J. Y., Akroma, R., Adu-Dapaah, H. K., Ohemeng-Dapaah and Safo Kantanka, O. (2008).  Evaluation of Nutritional Qualities of Groundnut (Arachis hypogaea L.) from Ghana. African Journal of Food Nutrition and Development.8(2):135-150.

Asibuo, J. Y., Akroma, R., Safo Kantanka, O., Adu-Dapaah, H. K., Ohemeng-Dapaah and Agyeman A. (2008). Inheritance of Fresh Seed Dormancy in Groundnut. African Journal of Biotechnology. 7:421-424.

Asibuo, J. Y., Akroma, R., Safo Kantanka, O., Adu-Dapaah, H. K., Ohemeng-Dapaah and Agyeman A. (2008).  Chemical Composition of groundnut (Arachis hypogaea L.) Landraces. African Journal of Biotechnology. 7(13):2203-2208.

Asibuo, J. Y., Akromah, R., Adu-Dapaah, H. K., Safo-Kantanka, O. 2008. Evaluation of   Nutritional Quality of Groundnut (Arachis hypogaea L.) from Ghana. African Journal of Food, Nutrition, and Development 8(2): 133-150.

Asibuo, J. Y., Akromah, R., Safo-Kantanka, O., Adu-Dapaah, H. K. Ohemeng-Dapaah, S. and Agyeman, A. 2008. Inheritance of Fresh Seed Dormancy in Groundnut.  African Journal of Biotechnology. Vol. 7 (4): 421–424

Asibuo, J. Y., Akromah, R., Safo-Kantanka, O., Adu-Dapaah, H. K., OhemengDapaah,  S. and Agyeman, A. 2008. Chemical Composition of Groundnut, Arachis hypogaea (L) Landraces. African Journal of Biotechnology. 7(13) 2203-2208.

Asibuo, J. Y., Safo, E.Y., Asafo-Adjei, B., and Osei-Bonsu, P. 2008. Residual Effect of Leguminous Crops and Inorganic Fertilizer on Soil Properties and Maize Grain Yield. Acta Agronomica Hungari 56(3) 295-301

Asiedu, E.A, Owusu-Akyaw M, Adu-Dapaah H,  Asafo-Adjei B, Amoah S. and Appiah Acheampong Akowua-Adusei P.  (2005) Seed and grain storage of cereals and legumes. Paper presented at Garden City Radio 3rd August 2005.

Asiedu, E.A., Adusei-Akowuah, P., Adu-Dapaah, H.K. and Asante, R. (2004). Effect of dehumidified drying on the storage quality of cowpea (Vigna unguiculata     (L) Walp) seeds. Ghana J. Agric Science.

Asiedu, E.A., P. Adusei-Akowuah, Asante, R., Adu-Dapaah, H.K. andDanquah, O.A (2005). Effect of seed storage quality on plant establishment and grain yield of cowpea (Vigna unguiculata L. Walp). Submitted to African Crop Science Journal.

Asiedu, E.A., Sallah, P.Y.K., Twumasi-Afriyie, S., Obeng-Antwi, K., Ahenkora K. & Adusei-Akowuah, P. 2001.  Agronomic and post-harvest characterisation of three quality protein maize (QPM) hybrids developed in Ghana. Ghana Jnl. Agric. Sci. 34, 57-62.

Asiedu, E.A., Twumasi-Afriyie, S., P.Y.K. Sallah & Obeng-Antwi, K. 1999.  Botanical Characterisation of Quality Protein Maize Lines Developed in Ghana.  Ghana J. Agric. Sci. 34:57-62.

Asumadu, H., Adu-Dapaah, H.K. Haleegoah, J. and Nyame K.  (2005). Pre-proposal study report on priority researchable constraints in the Ashanti Region 28pp. A consultancy report submitted to the AgSSIP secretariat for the Competitive Agricultural Research Grant Scheme, February 2005.

Badu-Apraku, A. Menkir, M.A.B. Fakorede, A. Fontem Lum, K. Obeng-Antwi. 2006. Multivariate analyses of the genetic diversity of forty-seven Striga resistant tropical early maturing maize inbred lines.Maydica 51, 551-559.

Badu-Apraku, B., Abamu, F.J., Menkir, A., Fakorede, M.A.B., Obeng-Antwi, K. & Thé,C. 2003. Genotype by environment interactions in the regional early maize variety trials in west and central Africa. Maydica 48, 93-104.

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Tarawali, G; Manyomg, V.M.; Carsky, R..; Vissoh, P.V.; Osei-Bonsu, P. and Galiba, M. (1999). Adoption of improved fallows in West Africa: Lessons from mucuna and and stylo case studies. Agroforestry Systems 47: 93-122.

Vissoh, P., Manyong, V. M., Carsky, J.R., Osei-Bonsu, P. and Galiba, M. 1997. Experiences with Mucuna in West Africa. In Buckles, D., Eteka, A., Osiname, O., Galiba, M and Galiano, G. (eds). Cover Crops in West Africa contributing to sustainable Agriculture. Proceedings of a wokshop on Green manure cover crops systems for small holders in Tropical and Subtropical Regions. Held in Chapeco, Brazile from 6-12 April 1997.

Zhou, G., Overholt, W. A., and Mochiah M. B. (2001). Changes in the distribution of maize stemborers in Kenya from the 1950’s to the 1990’s. Insect Science and Its Application 21: 395-402.

Click the link below for AFSJG Abstracts

Assessement of genetic variation among some intro tomato.pdf click here

Effect of sowing depths on Cylas spp infectationn on sweetpotato.pdf click here

Estimate of Heterosis in early generations of tomato.pdf click here

Impact of yam mosaic virus on tuber yield of white yam.pdf click here

Performance of bambara grount landraces in the transition agroecology.pdf click here

Physical, functional and cooking characteristic of newly released cowpea.pdf click here

Production and marketing challenges of vegetable.pdf click here

Scientific & Technical Reports

Acheampong P. P., Haruna B., Ankomah A. A. and Mochiah M. (2007). Consumer willingness to pay for safe vegetables in Ghana. Report submitted to International Institute of Tropical Agriculture.

Acheampong, P. P., Haleegaoh,  J. and  Marfo, K. A. (2005). Consumers’ preferences for local and imported rice (raw and parboiled) in Bibiani in the Western Region and Hohoe in the Volta Region. Report prepared for GASTBY Charitable Fundation ,U.K.

Adu-Dapaah, H.K., Asibuo, J.Y., Asafo-Adjei, B., Ntare, B., Amoah, S., Asafu-Agyei, J.N., Asumadu, H., Osei-Bonsu, P., Osei-Yeboah, S.Y., Danquah, O-A, Owusu-Akyaw, M., Lamptey, J.N., Anchirinah, V., Donkor, J., Adu, M.K., Hyeamang, O.N., Acquah, M. & Addo, J.K. (2005).  Breeding, methodology, botanical and agronomic characeteristics of four groundnut, two cowpea and two soybean genotypes proposed for release.  CRI, Kumasi. 61pp.

Ampong Mensah G., Afuakwa, J.J., Lamptey, J.N., Adu-Mensah, J., Ohemeng-Dapaah, S., Asare-Bediako, A., Moses, E., Dixon, A.G., Iiona, P., Lotsu, E., Awoodzie, J.K.E., & Danso, A.K.  (2004).  Release of cassava varieties.  CRI, Kumasi.

Amu-Mensah F. K., W. E. I. Andah and E. Annan-Afful (2006). On-farm evaluation of Water Management Structures in Inland Valleys: AGSSIP final report submitted to AFFS, CSIR, Accra, pp 1-8.

Annan-Afful E (2006). Sustainable Rice-based Cropping System in the Rainfed Lowland of the forest zone. AGSSIP completion report submitted to AFFS, CSIR, Accra, pp 1-5.

Annan-Afful E, E. Owusu-Sekyere and D. Kubota (2001). Ecological studies on nutrient cycling and flows in and between various land use. In; Integrated Watershed Management of Inland Valleys in Ghana  and West Africa “Ecotechnology Approach”. Final report submitted to JICA, Accra. Edited by T. Wakatsuki, E. Otoo, W. E. I. Andah, J. Cobbina, M. M. Buri and D. Kubota,  pp  203- 213.

Annan-Afful E., G. K. Acheampong, M. M. Buri and T. Wakatsuki (2006). Development of Sustainable Rice-based Cropping system using the sawah technology. Soil Research Institute Technical report No.264, pp 1-7.

Annan-Afful E., G. K. Acheampong, R. K. Bam, K. A. Dartey (2007). On-farm Adaptive Research, Annual Report submitted to the Inland Valleys Rice Development Project Coordinating  Unit (PCU), pp 1-17.

Annan-Afful E., R. K. Bam, G. K. Acheampong, M. Nuako Bandoh and T. Wakatsuki (2008). Productivity of Sawah Eco-technology: The Role of Sustainable Rice-based Cropping Systems. CSIR-CRI New Sawah Project progress report for August 2007 – March 2008, submitted to Kinki University, Japan, pp 2-8.

Asafo-Adjei, B., Asumadu, H., Adu-Dapaah, H., Lamptey, J.N.L., Haleegoah, J., Adu-Nti, B. (2006).  Farmer participatory on-farm evaluation and selection of rosette resistant groundnut varieties in Ejura-Sekodumase, Sekyere East and Sekyere West districts in Ashanti region.  Report on field day held at Hiawoanwu, Ejura. 5pp.

Asafo-Adjei, B., Asumadu, H., Adu-Dapaah, H., Lamptey, J.N.L., Haleegoah, J., Adu-Nti, B. (2006).  Farmer participatory on-farm evaluation and selection of rosette resistant groundnut varieties in Ejura-Sekodumase, Sekyere East and Sekyere West districts in Ashanti region.  Progress report for April to July. 9pp.

Bam R. K. , E. Annan- Afful, G.K. Acheampong, M. N. Bandoh and T. Wakatsuki (2008). Increasing Rice Production potential of the Inland Valleys: The Role of Sawah Eco-technology. CSIR-CRI New Sawah Project Progress report for August 2007 – March 2008, submitted to Kinki University, Japan,  pp 1

Bam R. K., E. Annan-Afful, G.K. Acheampong, M.D. Asante, P.K.A, Dartey and M.N. Bandoh (2008). Evaluation of improved Rice Varieties for the Rainfed Lowlands. In; Annual Report on Adaptive Research submitted to the Inland Valleys Rice Development Project Coordinating Unit, pp 1-6

Braimah, H., Adu-Mensah, J., Moses, E. & Lamptey, J.N.L. (2001).  Report on Pest and Disease Surveillance Survey for the dry season of 2001.  RTIP/CRI Report.

Dapaah, H.K., Adofo, K., Otoo, J.A., Moses, E., Lamptey, J.N.L., Adu-Kwarteng, E., Ohemeng-Dapaah, S., Aubyn, A., Asafu-Agyei, J.N., Asiedu, E., Obeng-Asamoah, N., Nyarko, F., Opoku-Agyemang, M., Oduro, I., Otoo, E., Carson, A.G. & Darkwa, A. (2005).  Sweet Potato genotypes Proposed for release.  CRI, Kumasi. 32pp.

Dartey Kofi (2006). Evaluation of upland Nericas in southern Ghana. In JAICAF-WARDA-JICA Joint Seminar on NERICA Dissemination in Africa 2006. GIMPA, Accra, Ghana. Japan International Cooperation Agency (JICA). pp 219-225

Dartey Paul Kofi (2003). Varietal Selection – Southern Ghana. End of Phase Report for GATSBY/WARDA Funded Project. Crops Research Institute, Ghana. 36pp

Dartey, P. K. A., E. Annan-Afful., G. K. Acheampong and O. Dwomoh (2005) Assessment of rice cropping practices in Afere in Juaboso district, and the possibility of introducing the sawah technology in Afere. Submitted to the Food Security and Rice Producers Organisation, Accra, May 2005, pp 1-30.

Dzomeku, B.M., Lamptey, J.N.L. & Aubyn, A. (2002).  Establishment of a delivery system for healthy improved Musa germplasm with field tolerance/resistance to banana streak virus (BSV) and resistance to black sigatoka disease in Ghana. Final Technical Report.  GATSBY-Ghana Musa project. 14pp.

Edwin A. Gyasi, Gordana Kranjac-Berisavljevic, P. B. Tanzubil, Essie T. Blay, Cecil Osei, Kofi Dartey, Carol M. Markwei and  J. A. Yidana (2005). Community-Based Management of On-Farm Plant Genetic Resources In Arid And Semi-Arid Areas Of Sub-Saharan Africa: Case Study Of Yam And Rice In Ghana. 57pp

Fening, K.O., Kioko, E.N. and Raina, S.K. (2009). Effect of parasitoids’ exit and predators’ ingress holes on silk yield of the African wild silkmoth, Gonometa postica Walker (Lepidoptera: Lasiocampidae). International Journal of Industrial Entomology. 19:265-268.

Fening, K.O., Kioko, E.N., Raina, S.K. and Mueke, J.M. (2009). Parasitoids of the African Wild Silkmoth, Gonometa postica (Lepidoptera: Lasiocampidae) in the Mwingi Forests, Kenya. Journal of Applied Entomology 133:411-415.

Haleegoah J., Acheampong, P. P., Marfo, K. A. and Dwomo, O. (2006).  Factors influencing the development of lowland trajectories in West Africa. Report submitted to West Africa Rice Center.

Hemeng, O.B., Anno-Nyako, F.O., Banful, B., Dzomeku, B.M., Moses, E., Lamptey, J.N.L., Dankyi, A.A., Yeboah, D.K., Dennis, J. & Asigri, M. (1999). Release of two Musa hybrid varieties FHIA-21 (plantain) and FHIA-01 (banana). in Ghana.  27pp.

K.O. Fening & Dominic A. Edoh (2009). The impact of socio-economic status and sanitation levels on the prevalence of diarrhoeal diseases in the Akim Oda area of Ghana: The Internet Journal of Epidemiology. Volume 6, Number 2.

Kindness, H., Peters, J.,  Danquah, O-A, Lamptey, J.N.L., Peters, J.,  Tsigbey, F.  (2000). Farmers perception of yam pests and diseases and management practices particularly relating to yam seed in the Northern and Brong-Ahafo     regions of Ghana. Project No. CO948.  NRI/CRI/University of Reading Report.  33pp.

Lamptey, J. N. L. and Missah, A. (1992).  Incidence and Security of African cassava mosaic disease on improved cassava varieties in multiplication plots and farmers fields in the Northern region of Ghana.  Report submitted to Programme Coordinator, Smallholder Rehabilitation and Development Programme (SRDP).  31st October, 1992.

Lamptey, J.N.L. & Osei, K. (2009).  Consultancy report on training services provided for farmer based organizations at Fanteakwa district (Eastern Region) under the MiDA programme. 2pp.

Lamptey, J.N.L. & Osei, K. (2009).  Consultancy report on training services provided for farmer based organizations at Fanteakwa district (Eastern Region) under the MiDA programme. 2pp.

Lamptey, J.N.L., Moses, E., Swatson, E. & Dwamena, E. (2002).  Report on  Field Inspection of Exotic Sweet Potato Variety BOSBEK.

Obeng-Antwi K. & P.Y.K. Sallah  & M.S. Abdulai, 2000. Planting Programme for On-station Maize Improvement in 2000.

Obeng-Antwi K. & P.Y.K. Sallah, 1999. Maize Improvement – 1998 Annual Report.

Obeng-Antwi K. & P.Y.K. Sallah, 1999. Planting Programme for On-station Maize Improvement in 1999.

Otoo, E, Asiedu, R.,. Lamptey J.N.L, Moses, E., Adu-Mensah, J., Dapaah, H.K.,  Ohemeng-Dapaah, S., Anchirinah, V.M., Quain, M. (2005).  Release of Yam (Dioscorea rotundata) by the Yam breeding Programme.  CRI, Kumasi.

Owusu-Akyaw, M., Mochiah M.B., Fening, K.O. and Amoabeng, B.W. (2010). Efficacy of Bossmate 2.5% E.C. for control of pre- and post- flowering insect pests of cowpea. Pesticide Registration Report Submitted to Environmental Protection Agency (EPA), Accra, Ghana, January, 2010, 9pp.

Peters, J., Ellenbroek, W., Danquah, O-A.,  Lamptey, J.N.L., Andam, F. & Osei, C. (1997).  Report on yam field diseases in Ghana.  NRI/University of Reading Report.

Peters, J., Kenyon, L., Danquah, O-A, Lamptey, J.N.L., Missah, A., Nutsugah,S. Tsigbey, F., Andan, F., Hughes, J., Hemeng, B. & Acheampong, E. (2000).  Control of Yam Diseases in Forest Margin Farming Systems in Ghana.  DFID CPP Project R6691 (ZAO138).  Final Technical Report.  168pp.

Peters, J., Kenyon, L., Kindness, H., Danquah, O-A., Lamptey, J., Missah, A.,Nutsugah, F., Tsigbey, F., Osei, C. & Andam, F. (1999).  Diseases and Pests of Yam in Ghana.  Leaflets. 5pp. UoR/NRI/CRI/SARI/MOFA.

Sallah, P.Y.K., K. Obeng-Antwi & K. Ahenkora, 1999.  Development of high yielding and diseases resistant quality protein maize (QPM) varieties.  Progress report on WECAMAN collaborative quality protein maize project in Ghana in 1998.  Submitted to WECAMAN in March, 1999.

Sallah, P.Y.K., K. Obeng-Antwi & M.S. Abdulai.  Breeding for drought tolerant and disease resistant early and extra-early maturing maize varieties. Progress report on WECAMAN collaborative extra-early drought tolerant maize project in Ghana in 1998.  Submitted to WECAMAN in March, 1999.

Sallah, P.Y.K., K. Obeng-Antwi & M.S. Abdulai.  Breeding for Striga tolerance/resistance in extra-early, early and intermediate maturity groups of maize.  Research proposal submitted to the Maize Network for West and Central Africa (WECAMAN).

Sallah, P.Y.K., K. Obeng-Antwi, M.S. Abdulai & A. Abunyewah.  Development of nitrogen efficient and low nitrogen tolerant maize varieties.  Progress report on WECAMAN collaborative African maize stress project in Ghana in 1998. Submitted to WECAMAN in March, 1999.

CONFERENCE PROCEEDINGS

Adu-Dapaah, H., Asumadu, H., Lamptey, J.N.L., Haleegoah, J. & Asafo-Adjei, B. (2007).  Farmer Participation in Groundnut Varietal Selection.  African Crop Science Conference Proceedings Vol. 8 pp.1435 -1439.  Eds. K. Z. Ahmed, M. Abdel –Hakim Mahmoud, S.I. Shalabi, A. El-Morsi ,  El-Morsi Hamady & A.M. Ismael.  El-Minia, Egypt, 27-31 October.

Anno-Nyako, F.O. & Lamptey, J.N.L.(2001).  Case history of Musa virus diseases in Ghana. Plant Virology in sub-Saharan Africa Conference. Pp.406 – 410. Eds.   Jacqueline d’A Hughes, & Babajide O. Odu. IITA, Croydon (GBR).