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Journal Article 1987

Autor: Powell, J.M. Mohamed-Saleem, M.A.

Investigates Nitrogen and Phosphorus transfers in a crop - livestock system in the subhumid zone of Nigeria. Estimates N and P removed from cropland during crop residue grazing and returned to the land through manure, and the contribution crop residues make to cattle diet during the dry season.

Enlace original: https://cgspace.cgiar.org/handle/10568/28109

Investigación en Agricultura
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Powell, J.M. ,  Mohamed-Saleem, M.A. ,  [Nitrogen and phosphorus transfers in a crop-livestock system in West Africa] ,  Nitrogen and phosphorus transfers in a crop-livestock system in West Africa
Conference Paper 1995

Autor: Fernández Rivera, S. Williams, Timothy O. Hiernaux, Pierre H.Y. Powell, J.M.

Livestock manure is an important source of nutrients for crop production in semi-arid West Africa. An assessment of the potential of manure to sustain crop production calls for an estimation of the amounts of manure that could be produced and captured and the feed resources required to maintain l...

Enlace original: https://cgspace.cgiar.org/handle/10568/2775

Investigación en Agricultura
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Fernández Rivera, S. ,  Williams, Timothy O. ,  Hiernaux, Pierre H.Y. ,  Powell, J.M. ,  [Faecal excretion by ruminants and manure availability for crop production in semi-arid West Africa] ,  Faecal excretion by ruminants and manure availability for crop production in semi-arid West Africa
Conference Paper 1996

Autor: Powell, J.M. Fernández Rivera, S. Hiernaux, Pierre H.Y. Turner, M.

The sustainability of nutrient transfers in integrated rangeland/cropland systems of the Sahel was examined in relation to the impact of livestock. Rangeland nutrient balances are considered in equilibrium whereas croplands lack the internal capacity to replenish nutrient off takes in grain and c...

Enlace original: https://cgspace.cgiar.org/handle/10568/50882

Investigación en Agricultura
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Powell, J.M. ,  Fernández Rivera, S. ,  Hiernaux, Pierre H.Y. ,  Turner, M. ,  [Nutrient cycling in integrated rangeland/cropland systems of the Sahel] ,  Nutrient cycling in integrated rangeland/cropland systems of the Sahel
Journal Article 1985

Autor: Powell, J.M.

Describes a study to determine grain & stover yields of sorghum & millet under traditional farming systems in the subhumid zone of Nigeria and observe consumption of stover components by livestock within the first two months of the dry season, w. data on chemical composition of leaf & stalk compo...

Enlace original: https://cgspace.cgiar.org/handle/10568/29707

Investigación en Agricultura
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Powell, J.M. ,  [Yields of sorghum and millet and stover consumption by livestock in the subhumid zone of Nigeria] ,  Yields of sorghum and millet and stover consumption by livestock in the subhumid zone of Nigeria
Conference Proceedings 1994

Autor: Powell, J.M. Fernández Rivera, S. Williams, Timothy O. Renard, C.

This document summarises the major discussions, findings and recommendations of the conference convened by ILCA and its cosponsors to bring together national and international experts in livestock nutrition and management, ecology, agronomy, soil science and socio-economics to address fundamental...

Enlace original: https://cgspace.cgiar.org/handle/10568/2721

Investigación en Agricultura
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Powell, J.M. ,  Fernández Rivera, S. ,  Williams, Timothy O. ,  Renard, C. ,  [Livestock and sustainable nutrient cycling in mixed farming systems of sub-Saharan Africa. Volume I: Conference summary] ,  Livestock and sustainable nutrient cycling in mixed farming systems of sub-Saharan Africa. Volume I: Conference summary
Conference Paper 1995

Autor: Williams, Timothy O. Powell, J.M. Fernández Rivera, S.

Animal manure is of vital importance to soil-fertility maintenance in semi-arid West Africa due to its intrinsic value as a soil amendment and because of the low level of inorganic fertiliser use. This paper provides a regional overview of manure utilisation for food crop production. Results of e...

Enlace original: https://cgspace.cgiar.org/handle/10568/2780

Investigación en Agricultura
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Williams, Timothy O. ,  Powell, J.M. ,  Fernández Rivera, S. ,  [Manure utilisation, drought cycles and herd dynamics in the Sahel: implications for cropland productivity] ,  Manure utilisation, drought cycles and herd dynamics in the Sahel: implications for cropland productivity

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