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Crop yield requires leaf area to intercept solar radiation and to undertake photosynthesis, both of which depend on nitrogen (N) accumulation. Further, the amount of accumulated plant N at the beginning of seed fill serves as the reservoir for N required in synthesizing the proteins in developing...


Clavijo Michelangeli, José A.Ricaurte Oyola, José JaumerSinclair, Thomas R.Rao, Idupulapati M.Beebe, Stephen E.[Influence of plant density and growth habit of common bean on leaf area development and N accumulation]Influence of plant density and growth habit of common bean on leaf area development and N accumulation

In 1988 a field survey was conducted on soybean (Glycine max) production trials at Ayepe in Nigeria. The survey investigated yield variability, fertilizer requirements and economic returns among small farmers. It revealed that the soybean yield was low (524 kg/ha), while yield variability was ext...


Baten, M.A.Agboola, A.A.Mutsaers, H.J.W.[An exploratory survey of soybean production in Ayepe, Nigeria]An exploratory survey of soybean production in Ayepe, Nigeria
Pandey, ShivajiDiallo, A.O.Islam, T.M.T.Deutsch, J.[Response to full-sib selection in four medium maturity maize populations]Response to full-sib selection in four medium maturity maize populations

populations were the main plots, whereas varieties were subplots. The proportion of intercepted photosynthetically active radiation (IPAR) and leaf area index (LAI) increased with increasing plant population at both locations, indicating that high leaf area indices and high degree of canopy closu...


Kamara, A.Ewansiha, S.U.Boahen, S.Tofa, A.I.[Agronomic Response of Soybean Varieties to Plant Population in the Guinea Savannas of Nigeria]Agronomic Response of Soybean Varieties to Plant Population in the Guinea Savannas of Nigeria

Jarvis, Devra I.Hodgkin, T.Brown, A.H.D.Tuxill, J.López Noriega, IsabelSmale, M.Sthapit, B.R.[Diversity and its evolution in crop populations]Diversity and its evolution in crop populations
Kihara, JobTamene, LulsegedMassawe, P.Bekunda, Mateete A.[Agronomic survey to assess crop yield, controlling factors and management implications: a case-study of Babati in northern Tanzania]Agronomic survey to assess crop yield, controlling factors and management implications: a case-study of Babati in northern Tanzania

Describes the woody components in the African Savanna rangelands and the production of wood and grass with supporting data on number of trees & shrubs per hactare (Data from Ethiopia and Senegal); also describes the tree populations with data on woody layer and grass layer productivities in vario...


Bille, Jean-Claude[Some aspects of bush encroachment in the African rangelands]Some aspects of bush encroachment in the African rangelands

Mubiru, D.N.Otim, G.Namakula, J.Lwasa, J.Elem, J.Nanyeenya, W.[Conserving soils: Evaluating permanent planting basins to optimize plant populations of maize and beans]Conserving soils: Evaluating permanent planting basins to optimize plant populations of maize and beans

Maize cultivation has recently expanded to the West African Sudan savannah and has the potential to play a key role in the cropping systems of the region where intercrop yields have been low. Staggering planting date and manipulating plant population of component crops are potential ways to impro...


Ewansiha, S.U.Kamara, A.Chiezey, U.F.Onyibe, J.E.[Response of cowpea to sowing date and maize plant population in a Sudan savannah environment]Response of cowpea to sowing date and maize plant population in a Sudan savannah environment

Agroforestry systems involving leaf removal for animal fodder may result in rapid depletion of soil fertility. The purpose of this research was to determine if the effects of leaf removal on soil fertility parameters and maize yield in aLeucaena leucocephalaalley cropping system could be reversed...


Wendt, J.W.Jones, R.B.Bunderson, W.T.Itimu, A.O.[Leucaena + maize alley cropping in Malawi; part 2: residual P and leaf management effects on maize nutrition and soil properties]Leucaena + maize alley cropping in Malawi; part 2: residual P and leaf management effects on maize nutrition and soil properties

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