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

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. ,  [Onfarm research in theory and practice] ,  Onfarm research in theory and practice

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

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

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

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

Weber, G. ,  Walker, P. ,  Mutsaers, H.J.W. ,  Fischer, N. ,  [A field guide for onfarm experimentation] ,  A field guide for onfarm experimentation