Descubre y comparte nuestro conocimiento público

Se han encontrado 688 recursos

Resultados de búsqueda

A litterbag experiment with Leucaena leucocephala and Senna siamea residues collected during four different pruning activities was carried out in no-tree-control and alley cropping plots. Decomposition was followed for 112 days after the respective pruning dates. Other factors studied were “amoun...


Vanlauwe, BernardSanginga, N.Merckx, R.[Decomposition of four Leucaena and Senna prunings in alley cropping systems under subhumid tropical conditions: the process and its modifiers]Decomposition of four Leucaena and Senna prunings in alley cropping systems under subhumid tropical conditions: the process and its modifiers

Quantification of the movement of residue N through various biologically meaningful soil organic matter (SOM) fractions is essential in low-input tropical cropping systems for the development of management practices aimed at optimizing N-use efficiency. The flow of N derived from 15N-labeled leuc...


Vanlauwe, BernardSanginga, N.Merckx, R.[Soil organic matter dynamics after addition of nitrogen15 labeled leucaena and dactyladenia residues]Soil organic matter dynamics after addition of nitrogen15 labeled leucaena and dactyladenia residues

Quantification of the fate of residue N is essential in low-input tropical cropping systems for the development of management practices that optimize N-use efficiency. The recovery of N from 15N-labeled leucaena (Leucaena leucocephala (Lam.) de Wit) and dactyladenia (Dactyladenia barteri (Hook f ...


Vanlauwe, BernardSanginga, N.Merckx, R.[Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems]Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems

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.Kang, B.Opuwaribo, E.E.[Assessment of N availability of roots of selected woody species and maize]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.Chude, V.Carsky, R.Weber, G.Horst, W.[Legume rotation in the moist tropical savanna: managing soil nitrogen dynamics and cereal yields in farmers' fields]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.Jeger, M.J.Mughogho, L.K.Cardwell, K.F.Mtisi, E.[Effect of dew point temperature and conidium age on germination, germtube growth and infection of maize and sorghum by Peronosclerospora sorghi]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.Deadman, M.L.Cardwell, K.F.Julian, A.M.[Survey on incidence and severity of Stenocarpella macrospora (Earle) leaf blight of maize in the midaltitude zone of Nigeria]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.Amadji, F.Eteka, A.Gogan, A.Koudokpon, V.[Farmers' adoptability of Mucuna fallowing and agroforestry technologies in the coastal savanna of Benin]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.Zamba, D.K.Vanlauwe, BernardSanginga, N.Lyasse, O.Diels, J.Merckx, R.[Alley cropping in the moist savanna of West Africa II. Impact on soil productivity in a northtosouth transect in Togo]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, BernardDiels, J.Duchateau, L.Sanginga, N.Merckx, R.[Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues]Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso