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Laing, Douglas R.[Bienvenida al CIAT y la necesidad de investigar sorgo en América Latina]Bienvenida al CIAT y la necesidad de investigar sorgo en América Latina

Los ensayos de la red de investigación son el medio de transferencia de los productos del proyecto a los países miembros. Ellos facilitan la evaluación y selección de materiales dentro de los sistemas de producción específicos en cada región. Igualmente, se espera que los países miembros puedan e...


Rangel, Andrés FelipeReddy, Belum V.S.[Network trials: Prospects and problems]Network trials: Prospects and problems
Ortiz, R.Vries, J. deToenniessen, G.[Securing the harvest: biotechnology, breeding, and seed systems for African crops]Securing the harvest: biotechnology, breeding, and seed systems for African crops

West Africa (WA) is among the most food insecure regions. Rapid human population growth and stagnating crop yields greatly contribute to this fact. Poor soil fertility, especially low plant available phosphorus (P) is constraining food production in the region. P-fertilizer use in WA is among the...


Gemenet, D.C.Leiser, W.L.Beggi, F.Herrmann, L.H.Vadez, VincentRattunde, H.F.W.Weltzien, EvaHash, C.T.Buerkert, AndreasHaussmann, B.I.G.[Overcoming phosphorus deficiency in West African pearl millet and sorghum production systems: promising options for crop improvement]Overcoming phosphorus deficiency in West African pearl millet and sorghum production systems: promising options for crop improvement

The effect of the environment on the germination, survival and infection of sorghum by conidia of Peronosclerospora sorghi is unknown in Africa. Dew point temperature, and the effect of conidium age was characterized for an isolate of P. sorghi from Zimbabwe. Germination and germ tube growth took...


Bock, C.H.Jeger, M.J.Mughogho, L.K.Cardwell, K.F.Mtisi, E.[Effect of dew point temperature and conidium age on germination, germtube growth and infection of maize and sorghum by Peronosclerospora sorghi]Effect of dew point temperature and conidium age on germination, germtube growth and infection of maize and sorghum by Peronosclerospora sorghi

Factors affecting the production of conidia of Peronosclerctsporas orghi, causing sorghum downy mildew (SDM), were investigated during 1993 and 1994 in Zimbabwe. In the field conidia were detected on nights when the minimum remperature was in the range l0-19ºC. On 73% of nights when conidia were ...


Bock, C.H.Jeger, M.J.Mughogho, L.K.Mtisi, E.Cardwell, K.F.[Production of conidia by Peronosclerospora sorghi on sorghum crops in Zimbabwe]Production of conidia by Peronosclerospora sorghi on sorghum crops in Zimbabwe

The cowpea breeding programmes are reviewed and achievements at two major centres of cowpea research, i.e. IITA (Nigeria) and IARI (India), are summarized. Earlyand extra early genotypes are always photoperiod-insensitive, medium maturity varieties could be sensitive or neutral today length, whil...


Singh, B.B.Sharma, B.[Restructuring cowpea for higher yield]Restructuring cowpea for higher yield

Farmers of rainfed cowpea/groundnut/millet/sorghum cropping systems in Kano, Nigeria, ranked arthropods as the major production constraint in cowpea and groundnut in 1991 and 1992. At least 25% of the farmers also reported severe infestations by Striga gesneroides a parasitic weed of cowpea. Drou...


Bottenberg, H.[Farmers perceptions of crop pests and pest control practices in rainfed cowpea cropping systems in Kano, Nigeria]Farmers perceptions of crop pests and pest control practices in rainfed cowpea cropping systems in Kano, Nigeria

The objectives of this study were to understand the effects of ontogeny on the expression and inheritance of resistance of sorghum (Sorghum hieolor [L.] Moench) to Colletotrichum graminicola (Ces.)Wils., the causal agent of anthracnose. Two resistant cuItivars (SC326-fi and SC599-11E) and two sus...


Tenkouano, A.Miller, F.R.Fredericksen, R.A.Nicholson, R.L.[Ontogenetic characteristics and inheritance of resistance to leaf anthracnose in sorghum]Ontogenetic characteristics and inheritance of resistance to leaf anthracnose in sorghum

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