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Journal Article 1996

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

In the Sahel of West Africa, the productivities of rangelands, croplands and livestock are inextricably linked. Cattle, sheep and goats graze rangelands and crop residues, and their manure/urine is used to fertilize crops. Rangelands provide important feeds during the manuring period, resulting i...

Enlace original: https://cgspace.cgiar.org/handle/10568/28104

Investigación en Agricultura
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Powell, J.M. ,  Fernández Rivera, S. ,  Hiernaux, Pierre H.Y. ,  Turner, M.D. ,  [Nutrient cycling in integrated rangeland/cropland systems of the Sahel] ,  Nutrient cycling in integrated rangeland/cropland systems of the Sahel
Journal Article 1998

Autor: Brouwer, J. Powell, J.M.

In African agriculture, availability of nutrients for crop production can be increased using external inputs such as mineral fertiliser. However, for many African farmers the large scale use of external inputs will remain beyond reach for the foreseeable future. There is, therefore, also a need f...

Enlace original: https://cgspace.cgiar.org/handle/10568/30022

Investigación en Agricultura
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Brouwer, J. ,  Powell, J.M. ,  [Increasing nutrient use efficiency in West-African agriculture: The impact of micro-topography on nutrient leaching from cattle and sheep manure] ,  Increasing nutrient use efficiency in West-African agriculture: The impact of micro-topography on nutrient leaching from cattle and sheep manure
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
Journal Article 1986

Autor: Powell, J.M.

Discusses the traditonal management of cattle manure in a cropping system in central Nigeria in conjunction with the agronomic benefits and problems of manure use.

Enlace original: https://cgspace.cgiar.org/handle/10568/28569

Investigación en Agricultura
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Powell, J.M. ,  [Manure for cropping: Case study from central Nigeria] ,  Manure for cropping: Case study from central Nigeria
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
Enlace permanente
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
Conference Paper 1995

Autor: Somda, Z.C. Powell, J.M. Fernández Rivera, S. Reed, J.D.

Mixed farming systems in semi-arid West Africa rely on recycling organically bound nutrients to maintain soil productivity. The passage of plant biomass through ruminant livestock plays a major role in the nutrient cycles of this region. The feeding value of crop residues and browses and their im...

Enlace original: https://cgspace.cgiar.org/handle/10568/2776

Investigación en Agricultura
Enlace permanente
Somda, Z.C. ,  Powell, J.M. ,  Fernández Rivera, S. ,  Reed, J.D. ,  [Feed factors affecting nutrient excretion by ruminants and the fate of nutrients when applied to soil] ,  Feed factors affecting nutrient excretion by ruminants and the fate of nutrients when applied to soil

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