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The risk of drought is high in the Sudan savannah zone of West and Central Africa because rainfall in this area is unpredictable in quantity and distribution. Thus, improved maize genotypes tolerant to drought could stabilize maize grain yield in this zone, where recurrent drought threatens grain...


Kamara, A.Y.Menkir, A.Badu-Apraku, B.Ibikunle, O.[The influence of drought stress on growth, yield, and yield components of some maize genotypes]The influence of drought stress on growth, yield, and yield components of some maize genotypes

A researcher-managed on-farm experiment was conducted on a soil with low 1.90 mg/kg available phosphorus (P) to evaluate nutrient carryover from soybean grown under different P management options and productivity of maize grown in rotation. Promiscuously nodulating 110-day maturing soybean variet...


Jagtap, S.S.Adeleye, O.[Nutrient recovery and productivity of a soybeanmaize rotation in the derived savanna ecology of West Africa]Nutrient recovery and productivity of a soybeanmaize rotation in the derived savanna ecology of West Africa

Iron deficiency is estimated to affect over one-half the world population. Improving the nutritional quality of staple food crops through breeding for high bioavailable iron represents a sustainable and cost effective approach to alleviating iron malnutrition. Forty-nine late maturing tropical el...


Oikeh, S.O.Menkir, A.Maziya-Dixon, B.B.Welch, R.Glahn, Raymond P.[Genotypic differences in concentration and bioavailability of kerneliron in tropical maize varieties grown under field conditions]Genotypic differences in concentration and bioavailability of kerneliron in tropical maize varieties grown under field conditions

Maize streak virus (MSV) was first studied by Storey in Kenya in the 1920s and resistance transferred into East African maize in the 1960's. Yet the majority of farmers of East Africa are still growing streak-susceptible maize. At the International Institute of Tropical Agriculture (IITA) in Nige...


Buddenhagen, I.W.Bosque Pérez, N.A.[Historical overview of breeding for durable resistance to maize streak virus for tropical Africa]Historical overview of breeding for durable resistance to maize streak virus for tropical Africa

The attitudes of farmers towards risks influence their decision to invest into farming. Understanding the factors that influence these attitudes is important for crop development. This paper uses a combination of Ridge and Tobit regression analyses to determine the factors influencing risk aversi...


Olarinde, L.O.Manyong, Victor M.Akintola, J.O.[Factors influencing risk aversion among maize farmers in the Northern Guinea Savanna of Nigeria: implications for sustainable crop development programmes]Factors influencing risk aversion among maize farmers in the Northern Guinea Savanna of Nigeria: implications for sustainable crop development programmes

Field experiments were conducted with IITA maize (Zea mays L.) composite B at six locations ranging from forest to savannah in the Western State of Nigeria to assess the level of zinc response on sandy Inceptisols. Zinc, as Na2 Zn EDTA, was applied as broadcast application at 0, 1.0, 2.0, 4.0, an...


Osiname, O.Kang, B.T.Schulte, E.E.Corey, R.B.[Zinc response of maize (Zea mays L.) grown on sandy inceptisols in Western Nigeria]Zinc response of maize (Zea mays L.) grown on sandy inceptisols in Western Nigeria

Maize (Zea mays) and itch grass (Rottboellia cochinchinensis) plants exhibiting a mild mosaic or mottle were collected from a farmer's field near Mokwa, Nigeria, in 1993. Icosahedral virions (approximately 28 to 30 nm) were purified from symptomatic tissue by differential centrifugation in 0.1 M ...


Thottappilly, G.Qiu, W.P.Batten, J.S.Hughes, J.N.Scholthof, K.B.[A new virus on maize in Nigeria: maize mild mottle virus]A new virus on maize in Nigeria: maize mild mottle virus
Autor: Lal, R.

The effect of constant and fluctuating soil temperature and two soil moisture regimes on the growth, development, transpiration and nutrient uptake by maize seedlings was studied in a greenhouse investigation. The constant root temperatures were maintained at 30, 34, 35, 36, 37, and 38°C for both...


Lal, R.[Effects of constant and fluctuating soil temperature on growth, development and nutrient uptake of maize seedlings]Effects of constant and fluctuating soil temperature on growth, development and nutrient uptake of maize seedlings

Weed seed bank size and composition were analysed in 1995 and 1996 in maize fields mulched with pruning from Gliricidia sepium, Leucaena leucocephala, and Senna siamea in South Western Nigeria. Plots mulched with pruning from the three trees had a lower weed seed bank in the first year of croppin...


Kamara, A.Y.Akobundu, I.O.Chikoye, D.Jutzi, S.C.[Weed seed bank size and composition in an arable crop mulched with pruning from three multipurpose trees in southwestern Nigeria]Weed seed bank size and composition in an arable crop mulched with pruning from three multipurpose trees in southwestern Nigeria

A review of the existing basis for maize stem borer IPM is given and the role of pathogens in the system is evaluated. Survey work outlining the major groups of insect pathogens is described; fungi (Beauveria bassiana and Metarhizium anisopliae), bacteria (Bacillus thuringiensis and Serratia marc...


Cherry, A.J.Lomer, C.J.Djegui, D.A.Schulthess, F.[Pathogen incidence and their potential as microbial control agents in IPM of maize stem borers in West Africa]Pathogen incidence and their potential as microbial control agents in IPM of maize stem borers in West Africa

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