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...
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
Describes procedures for the analysis of chemical constituents in soil, plant, water, fertilizer, animal manure and compost samples. Includes simple procedures for collecting, preparing and storing samples, including information on the need to care for field and laboratory materials such as sampl...
Cobbina, J.
,
Atta-Krah, A.N.
,
Kang, B.T.
,
[Leguminous browse supplementation effect on the agronomic value of sheep and goat manure]
,
Leguminous browse supplementation effect on the agronomic value of sheep and goat manure
A regional workshop was held in Ethiopia (Eastern Africa) to assess the status, future needs, and methodological issues of soil fertility research for bean cropping systems on the continent. Traditional forms of soil fertility maintenance, diagnosis of soil fertility constraints, nutrient require...
Wortmann, Charles S.
,
[Workshop on Soil Fertility Research for Bean Cropping Systems in Africa (1988, Addis Ababa, Ethiopia). Proceedings]
,
Workshop on Soil Fertility Research for Bean Cropping Systems in Africa (1988, Addis Ababa, Ethiopia). Proceedings
Reviews crop and livestock relationships in the farming systems of the semi arid zones. Discusses the effects of cropping on livestock output and effects of livestock on crop output. Also looks into crop output, wealth in the form of livestock and household consumption. Ends with a discussion on ...
Defines land use, cropping patterns, production inputs, yields and constraints, in order to identify and design appropriate methods for increasing the quantity, quality and availability of fodder resources in the subhumid zone of Nigeria.
Powell, J.M.
,
[ILCA's research on crop-livestock interactions in the subhumid zone of Nigeria]
,
ILCA's research on crop-livestock interactions in the subhumid zone of Nigeria
Investigates the present integration of livestock and crop production; examines the influence of crop residues on animal nutrition and the use of cattle manure in cropping and regards these in the context of further socio-economic interactions between the two ethnic groups, including land sharing...
Powell, J.M.
,
Waters-Bayer, Ann
,
[Interactions between livestock husbandry and cropping in a West African savanna]
,
Interactions between livestock husbandry and cropping in a West African savanna
Crop livestock production systems in Africa are constrained by wide fluctuations in the quality and quantity of feed resources during the year and by the low availability of nutrients, especially nitrogen and phosphorus, in most soils, which threatens the sustainability of primary production. In ...
Haque, I.
,
[Use of legume biological nitrogen fixation in crop/livestock production systems]
,
Use of legume biological nitrogen fixation in crop/livestock production systems