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Plant architecture and N fertilizer may limit the performance of intercropped maize (Zea mays L.) and cowpea [Vigna unguiculata (L.) Walpers] cultivars. This paper describes an experiment in which cultivars of maize and cowpea were intercropped and fertilized with varying rates of N. The cowpea c...


Ezumah, H.C.Nam, N.K.Walker, P.[Maize-cowpea intercropping as affected by nitrogen fertilization]Maize-cowpea intercropping as affected by nitrogen fertilization

The success of inland valley crop production in humid and subhumid areas of subSaharan Africa depends on the availability of appropriate crop varieties with some tolerance to excess moisture. Performance of upland crop associations [cassava (Manihot esculenta) + sweet potato (Ipomoea batatas) and...


Carsky, R.J.Walker, P.Hauser, S.Dashiell, Kenton E.Dixon, A.[Response of selected crop associations to groundwater table depth in an inland valley]Response of selected crop associations to groundwater table depth in an inland valley
Mutsaers, H.J.W.Walker, P.[On-farm research in theory and practice: proceedings of a workshop on design and analysis of onfarm trials 27 February to 3 March 1989]On-farm research in theory and practice: proceedings of a workshop on design and analysis of onfarm trials 27 February to 3 March 1989

In the farming systems approach to technology development, trials are carried out on a limited number of farmers’ fields. Results of these trials are extrapolated to the entire target area and used either to identify directions for further research or to develop recommendations for farmers. Extra...


Smith, J.Walker, P.Oyewole, B.[Representativeness of farmers and sites in onfarm trials]Representativeness of farmers and sites in onfarm trials

Twelve samples of Striga hermonthica seed were collected from four host crops [millet (4), sorghum (4), a sorghum/millet intercrop (3) and maize (1)] from all the main areas of S. hermonthica infestation in Nigeria and were tested on eight genotypes of three test crops [maize (4), sorghum (2) and...


Kim, S.K.Akintunde, A.Walker, P.[Responses of maize, sorghum and millet host plants infestation by Striga hemonthica]Responses of maize, sorghum and millet host plants infestation by Striga hemonthica

Plant architecture and N fertilizer may limit the performance of intercropped maize (Zea mays L.) and cowpea [Vigna unguiculata (L.) Walpers] cultivars. This paper describes an experiment in which cultivars of maize and cowpea were intercropped and fertilized with varying rates of N. The cowpea c...


Ezumah, H.C.Nam, N.K.Walker, P.[Maize cowpea intercropping as affected by nitrogen fertilization]Maize cowpea intercropping as affected by nitrogen fertilization

Mutsaers, H.J.Walker, P.[On-farm research in theory and practice: proceedings of a workshop on design and analysis of onfarm trials 27 February to 3 March 1989]On-farm research in theory and practice: proceedings of a workshop on design and analysis of onfarm trials 27 February to 3 March 1989

Recent successes in the conventional cross-breeding of plantains and cooking bananas by genetic improvement programmes will inevitably lead to an increase in the number of new clones that require testing before release to farmers. In most cases testing focused on disease resistance and yield but ...


Korie, S.Walker, P.Ortiz, R.Vuylsteke, D.R.Ferris, R.S.B.[Statistical tools to evaluate sensory data fro testing fruit quality of Musa]Statistical tools to evaluate sensory data fro testing fruit quality of Musa

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