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The imponance of cowpea (Vigna unguiculata [L.] Walp.) is underscored by its use as a component in many cropping system combinations in Africa, Asia, and tropical America. Cropping systems research over the past decade has served as a multidisciplinary approach to examine the biological superiori...


Blade, S.Shetty, S.Terao, T.Singh, B.[Recent developments in cowpea cropping systems research]Recent developments in cowpea cropping systems research

Yields of intercropped oil palm (Elaeis guineensis) and cocoyam (Xanthosoma sagittifolium) were assessed at Okomu (6°25'N, 5°12'E), near Benin City, southern Nigeria. Yields were assessed during the fifth and sixth year after the establishment of oil palm. The annual yield of fresh fruit bunches ...


Salako, F.K.Lal, R.Swift, M.J.[Intercropping oil palm (Elaeis guneensis) with cocoyam (Xanthosoma sagittifolium) on windows and nonwindows in southern Nigeria]Intercropping oil palm (Elaeis guneensis) with cocoyam (Xanthosoma sagittifolium) on windows and nonwindows in southern Nigeria

Field trials were carried out in M'Vuazi, Bas Zaire, to test the response of groundnuts (cv P43), planted sole or intercropped with cassava (cv Kinuani), to lime application. Groundnuts responded significantly to low rates of lime (250-500 kg ha-1). Maximum cost, benefit ratio of 1:7 was obtained...


Osiname, O.Muamba, T.[Response of groundnut (Arachis hypogaea L.) in sole crop and in intercrop with cassava (Manihot esculenta Crantz) to lime in an Ultisol in Bas Zaire]Response of groundnut (Arachis hypogaea L.) in sole crop and in intercrop with cassava (Manihot esculenta Crantz) to lime in an Ultisol in Bas Zaire

The study was carried out to determine the most appropriate time of introducing rice into cassava with the aim of improving the total productivity of the intercrop. The rice variety Rok 16 was introduced into cassava at four different times—planted at the same time with cassava, and then at 2, 4,...


Jalloh, A.Dahniya, Mohamed T.Ezumah, H.C.[Productivity of cassava intercrop as influenced by cassava variety and time of introducingrice into cassava]Productivity of cassava intercrop as influenced by cassava variety and time of introducingrice into cassava

The severity and increase of the Imperata cylindrica constraint as a weed, the decline of the traditional fallow systems as a means of soil fertility management and the lack of inorganic fertilizer appear to have created opportunities for adoption of mucuna (Mucuna pruriens) technology by smallho...


Sanginga, N.Ibewiro, B.Houngnandan, P.Vanlauwe, BernardOkogun, J.A.Akobundu, I.O.Versteeg, M.[Evaluation of symbiotic properties and nitrogen contribution of mucuna to maize grown in the derived savanna of West Africa]Evaluation of symbiotic properties and nitrogen contribution of mucuna to maize grown in the derived savanna of West Africa

Farmer-managed trials in developing countries often show great variability in yield and treatment effects. The use of statistical techniques is demonstrated to explain this variability in a maize + cassava intercropping trial in southwestern Nigeria. Concomitant variables, measured in the trial f...


Mutsaers, H.J.W.Walker, P.[Farmers maize yields in S.W. Nigeria and the effect of variety and fertilizer: an analysis of variability in onfarm trials]Farmers maize yields in S.W. Nigeria and the effect of variety and fertilizer: an analysis of variability in onfarm trials

Both area and time factors have to be considered to quantify resource-use efficiency in multiseason intercropping. The land equivalent ratio (LER), commonly used as an indicator of efficiency, is not suitable because it considers only the area factor to estimate intercrop advantages. The area tim...


Balasubramanian, V.Sekayange, L.[Area harvests equivalency ratio for measuring efficiency in multiseason intercropping]Area harvests equivalency ratio for measuring efficiency in multiseason intercropping

Cassava sweet potato intercropping experiments were carried out at Ukiriguru (semiarid zone), Tanzania during the period from 1989-91. Four cassava varieties used were, Msitu Zanzibar, Alpim valenca, Mzimbirala and Liongo control. The second experiment tested four cassava planting densities, 6666...


Kapinga, R.Omueti, J.A.Ekanayake, I.J.[Soil N, P, and land use efficiency under cassava/sweet potato intercropping system in Tanzania]Soil N, P, and land use efficiency under cassava/sweet potato intercropping system in Tanzania

Agriculture research uses “recommendation domains” to develop and transfer crop management practices adapted to specific contexts. The scale of recommendation domains is large when compared to individual production sites and often encompasses less environmental variation than farmers manage. Farm...


Jiménez, DanielDorado, Hugo AndresCock, James H.Prager, Steven D.Delerce, Sylvain JeanGrillon, AlexandreAndrade Bejarano, MercedesBenavides, HectorJarvis, Andy[From observation to information: data-driven understanding of on farm yield variation]From observation to information: data-driven understanding of on farm yield variation

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