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Twelve cassava (Manihot esculenta Crantz) genotypes were planted under natural field conditions for two different cropping seasons (wet and dry), in 1992 and 1993 at the research farm of the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. The trial studied the effect of p...


Fokunang, C.N.Akem, C.N.Ikotun, T.Dixon, Alfred G.O.[Effect of planting season on cassava anthracnose disease development]Effect of planting season on cassava anthracnose disease development

Soybean rust, caused by Phakopsora pachyrhizi, is one of the most important constraints to soybean production worldwide. The absence of high levels of host resistance to the pathogen has necessitated the continued search and identification of sources of resistance. In one set of experiments, 178 ...


Twizeyimana, M.Ojiambo, P.S.Ikotun, T.Ladipo, J.L.Hartman, G.L.Bandyopadhyay, Ranajit[Evaluation of soybean germplasm for resistance to soybean rust (Phakopsora pachyrhizi) in Nigeria]Evaluation of soybean germplasm for resistance to soybean rust (Phakopsora pachyrhizi) in Nigeria

Fourteen soybean accessions and breeding lines were evaluated for resistance to soybean rust caused by the fungus Phakopsora pachyrhizi. Evaluations were conducted in replicated experiments in growth chambers using detached leaves and under greenhouse and field conditions. In growth-chamber exper...


Twizeyimana, M.Ojiambo, P.S.Ikotun, T.Paul, C.Hartman, G.L.Bandyopadhyay, Ranajit[Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi]Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi

Twelve cowpea cultivars were screened for reactions to infection by Colletotrichum lindemuthianum and C. truncatum, causal agents of anthracnose and brown blotch diseases, respectively. Three different inoculation techniques were used: spraying a spore suspension on leaves of seedlings, injecting...


Adebitan, S.A.Ikotun, T.Dashiell, Kenton E.Singh, S.R.[Use of three inoculation methods in screening cowpea genotypes for resistance to two Colletotrichum species]Use of three inoculation methods in screening cowpea genotypes for resistance to two Colletotrichum species

Soybean rust, caused by Phakopsora pachyrhizi, is an important disease in Nigeria and many other soybean-producing countries world-wide. To determine the geographical distribution of soybean rust in Nigeria, soybean fields were surveyed in the Derived Savanna (...


Twizeyimana, M.Ojiambo, P.S.Sonder, KaiIkotun, T.Hartman, G.L.Bandyopadhyay, Ranajit[Pathogenic variation of Phakopsora pachyrhizi infecting soybean in Nigeria]Pathogenic variation of Phakopsora pachyrhizi infecting soybean in Nigeria

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