In 1987, the leguminous cover crop Mucuna pruriens var. utilis was introduced on researcher-managed demonstration fields for novel technologies. The objective was to ad-dress the serious soil-fertility decline on the Adja Plateau in southern Bénin. But farmers were more impressed by the ability o...
L'histoire du Mucuna a commencé en République du Bénin en 1987, lorsque le Mucunapruriens var. utilis a été introduit aux paysans du village de Zouzouvou sur le plateauAdja. Bien qu'au départ le Mucuna ait été présenté aux paysans pour restaurer la fertilitédes sols, ceux-ci ont été plus impressi...
Versteeg, M.
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Amadji, F.
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Eteka, A.
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Houndekon, V.A.
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Manyong, Victor M.
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[Collaboration to increase the use of Mucuna in production systems in Benin]
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Collaboration to increase the use of Mucuna in production systems in Benin
An experiment was conducted to assess the N availability of roots of woody species and maize. The trial was conducted using a split-plot design with four replications. Four incubation periods (0, 2, 4 and 6 months) made up the main plots. There were six subplots, consisting of addition of fine ro...
Risasi, E.L.
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Kang, B.
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Opuwaribo, E.E.
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[Assessment of N availability of roots of selected woody species and maize]
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Assessment of N availability of roots of selected woody species and maize
The contribution of root and leaf litter to soil nitrogen dynamics, nitrogen uptake and balance was evaluated under cereal–legume rotations in a tropical moist savanna soil. Two legumes, soyabean (Glycine max) and stylo (Stylosanthes hamata), and maize (Zea mays) as a control were grown in four f...
Oikeh, S.
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Chude, V.
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Carsky, R.
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Weber, G.
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Horst, W.
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[Legume rotation in the moist tropical savanna: managing soil nitrogen dynamics and cereal yields in farmers' fields]
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Legume rotation in the moist tropical savanna: managing soil nitrogen dynamics and cereal yields in farmers' fields
The effect of the environment on the germination, survival and infection of sorghum by conidia of Peronosclerospora sorghi is unknown in Africa. Dew point temperature, and the effect of conidium age was characterized for an isolate of P. sorghi from Zimbabwe. Germination and germ tube growth took...
Bock, C.H.
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Jeger, M.J.
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Mughogho, L.K.
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Cardwell, K.F.
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Mtisi, E.
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[Effect of dew point temperature and conidium age on germination, germtube growth and infection of maize and sorghum by Peronosclerospora sorghi]
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Effect of dew point temperature and conidium age on germination, germtube growth and infection of maize and sorghum by Peronosclerospora sorghi
Surveys were conducted on the incidence and severity of Stenocarpella macrospora (Earle) Sutton (= Diplodia macrospora Earle) on maize in the mid-altitude zone of Nigeria in 1995 and 1996. The results indicated a possible link between disease severity and plant density. Fewer symptoms were observ...
Olatinwo, R.O.
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Deadman, M.L.
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Cardwell, K.F.
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Julian, A.M.
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[Survey on incidence and severity of Stenocarpella macrospora (Earle) leaf blight of maize in the midaltitude zone of Nigeria]
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Survey on incidence and severity of Stenocarpella macrospora (Earle) leaf blight of maize in the midaltitude zone of Nigeria
As technologies to counter soil fertility decline, alley farming with Leucaena leucocephala and Gliricidia sepium, annual short-season Mucuna pruriëns var. Utilis fallowing, and perennial Acacia auriculiformis fallowing have been tested. With alley farming, timely pruning is a critical element in...
Versteeg, M.
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Amadji, F.
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Eteka, A.
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Gogan, A.
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Koudokpon, V.
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[Farmers' adoptability of Mucuna fallowing and agroforestry technologies in the coastal savanna of Benin]
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Farmers' adoptability of Mucuna fallowing and agroforestry technologies in the coastal savanna of Benin
The moist savanna of West-Africa is characterized by a wide range of climates and soil types. The impact of the biophysical environment on hedgerow N uptake, wood production and maize grain yield was assessed for three years in three alley cropping trials with a selected number of hedgerow specie...
Tossah, B.K.
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Zamba, D.K.
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Vanlauwe, Bernard
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Sanginga, N.
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Lyasse, O.
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Diels, J.
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Merckx, R.
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[Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo]
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Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo
In tropical cropping systems with few external imputs, efficient management of mineral N derived from added organic residues is essential for the proper functioning of the system. We studied the dynamics of mineral Nitroden (N) in the top 100 cm of soil with a system tensiometers and suction cups...
Vanlauwe, Bernard
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Diels, J.
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Duchateau, L.
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Sanginga, N.
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Merckx, R.
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[Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues]
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Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues
Maize productivity relationships were studied at Ibadan in the derived savanna of south-western Nigeria using the CERES-Maize simulation model at six crop densities ranging from 2.96 to 13.3 plants m-2. The absolute growth rate for all plant components decreased linearly with density. The optimum...
Jagtap, S.S.
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Alabi, R.T.
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Adeleye, O.
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[The influence of maize density on resource use and productivity: an experimental and simulation study]
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The influence of maize density on resource use and productivity: an experimental and simulation study
Grain yield of maize (Zea mays L.) in the tropics are generally low and information on combining ability among tropical maize inbred lines has not been reported for West Africa. This study was conducted to estimate combining abilities of maize inbred lines developed for West Africa. Crosses obtai...
Kim, S.K.
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Ajala, S.O.
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[Combining ability of tropical maize germplasm in West Africa II. Troppical vs temperate x tropical origins]
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Combining ability of tropical maize germplasm in West Africa II. Troppical vs temperate x tropical origins