A field study of cowpea, soybean and maize was made at Ibadan, Nigeria, to determine the uptake of mineral nutrients and quantities removed in crop residues and seed. Concentrations of N, the major cations (K, Ca, Mg and Na) and major anions (P, S and Cl), and the micronutrients (Fe, Mn, Zn and C...
Randall, P.J.
,
Abaidoo, R.C.
,
Hocking, PJ
,
Sanginga, Nteranya
,
[Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification]
,
Mineral nutrient uptake and removal by cowpea, soybean and maize cultivars in West Africa, and implications for carbon cycle effects on soil acidification
Decline in crop yields is a major problem facing smallholder farmers in Kenya and the entire Sub-Saharan region. This is attributed mainly to the mining of major nutrients due to continuous cropping without addition of adequate external nutrients. In most cases inorganic fertilizers are expensive...
Kimetu, J.M.
,
Mugendi, DN
,
Palm, C.A.
,
Mutuo, PK
,
Gachengo, CN
,
Bationo, B. André
,
[Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya]
,
Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya
El uso de cultivos forrajeros para corte y acarreo o para ensilar es una alternativa para reducir los efectos negativos de la época seca en la alimentación de animales en sistemas ganaderos doble propósito en el trópico seco. Por otra parte, el uso de abonos verdes de leguminosas es una alternati...
Castro, R.E.
,
Sierra, E.
,
Mojica, J.E.
,
Carulla, Juan E.
,
Lascano, Carlos E.
,
[Efecto de especies y manejo de abonos verdes de leguminosas en la producción y calidad de un cultivo forrajero utilizado en sistemas ganaderos del trópico seco]
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Efecto de especies y manejo de abonos verdes de leguminosas en la producción y calidad de un cultivo forrajero utilizado en sistemas ganaderos del trópico seco
Pérez, J.C.
,
León, Carlos de
,
Narro León, Luis Alberto
,
Salazar Villareal, Fredy Antonio
,
Arias, María del Pilar
,
[Desarrollo de germoplasma de maíz para suelos ácidos: Programa suramericano de maíz CIMMYT]
,
Desarrollo de germoplasma de maíz para suelos ácidos: Programa suramericano de maíz CIMMYT
the Quesungual Slash and Mulch Agroforestry System (QSMAS) on the dynamics of soil nitrogen (N) and phosphorus (P), and their impact on QSMAS’ productivity in southwestern Honduras, Central America. Five land use systems were compared: (l) Slash-and-burn traditional system; (2, 3 and 4) QSMAS of ...
Castro, Aracely
,
Menjívar, Juan Carlos
,
Barrios, Edmundo
,
Asakawa, Neuza
,
Borrero, Gonzalo
,
García, Edwin
,
Rao, Idupulapati M.
,
[Dinámica del nitrógeno y el fósforo del suelo bajo tres sistemas de uso de la tierra en laderas de Honduras]
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Dinámica del nitrógeno y el fósforo del suelo bajo tres sistemas de uso de la tierra en laderas de Honduras
Ceballos, H.
,
Arroyave, José A.
,
Valor, José C.
,
[Potencial de Mycodiplosis fungicola en el control biológico de royas en maíz]
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Potencial de Mycodiplosis fungicola en el control biológico de royas en maíz
Moura, Fabiana F. de
,
Miloff, Alexander
,
Boy, Erick
,
[Retention of provitamin A carotenoids in staple crops targeted for biofortification in Africa: cassava, maize and sweet potato]
,
Retention of provitamin A carotenoids in staple crops targeted for biofortification in Africa: cassava, maize and sweet potato
The selection response of a complex maize population improved primarily for quantitative disease resistance to northern leaf blight (NLB) and secondarily for common rust resistance and agronomic phenotypes was investigated at the molecular genetic level. A tiered marker analysis with 151 simple s...
Wisser, RJ
,
Murray, SC
,
Kolkman, Judith M.
,
Ceballos, H.
,
Nelson, R.J.
,
[Selection mapping of loci for quantitative disease resistance in a diverse maize population]
,
Selection mapping of loci for quantitative disease resistance in a diverse maize population
Herselman, L.
,
Chotte, Jean-Luc
,
Thuita, Moses N.
,
Lesueur, Didier
,
[Effects of cropping systems, maize residues application and N fertilization on promiscuous soybean yields and diversity of native rhizobia in Central Kenya]
,
Effects of cropping systems, maize residues application and N fertilization on promiscuous soybean yields and diversity of native rhizobia in Central Kenya
Breeding programs for acid-soil tolerance are desirable as a relatively inexpensive and permanent way for increasing maize (Zea mays L.) yield on these soils. Our objective was to compare the genetic effects controlling the expression of maize traits in acid and non-acid soils. Seven related and ...
Pérez Velásquez, Juan Carlos
,
Souza Junior, C.L. de
,
Narro Leon, LA
,
Pandey, S.
,
León, C. de
,
[Genetics effects for maize traits in acid and non-acid soils]
,
Genetics effects for maize traits in acid and non-acid soils