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Crop growth on acid sandy soils of the Sudano-Sahelian zone is primarily limited by the low amounts of organic matter and available mineral nutrients in the topsoil. The shortening of fallow periods with population growth, the exploitation of fire wood, spatial nutrient transfers by wind and wate...


Buerkert, AndreasHiernaux, Pierre H.Y.[Nutrients in the West African Sudano-Sahelian zone: Losses, transfers and role of external inputs]Nutrients in the West African Sudano-Sahelian zone: Losses, transfers and role of external inputs

Improved understandings of the agricultural and range ecologies of semi-arid Africa require better information on the spatiotemporal distribution of domestic livestock across agropastoral landscapes. An empirical GIS-based approach was developed for estimating distributions of herded livestock a...


Turner, M.D.Hiernaux, Pierre H.Y.[The use of herders' accounts to map livestock activities across agropastoral landscapes in Semi-Arid Africa]The use of herders' accounts to map livestock activities across agropastoral landscapes in Semi-Arid Africa

Poor cropland fertility and a rapidly rising demand for food force Sahelian farmers to cultivate more land and shorten fallow periods. This mostly leads to a gradual decline in crop yields per hectare, which can be counterbalanced by the systematic use of livestock manure on cropland. To assess t...


Schlecht, E.Hiernaux, Pierre H.Y.Achard, F.Turner, M.D.[Livestock related nutrient budgets within village territories in western Niger]Livestock related nutrient budgets within village territories in western Niger

The effects of grazing by livestock on plant species composition and spatial distribution have been studied at Sadoré, Niger. Herbaceous species were recorded in plots of increasing size from 1/64 to 1024 m2 in ten fallow plots subjected to five different grazing treatments over the previous thr...


Hiernaux, Pierre H.Y.[Effects of grazing on plant species composition and spatial distribution in rangelands of the Sahel]Effects of grazing on plant species composition and spatial distribution in rangelands of the Sahel

An experiment was conducted in 1996 and 1997 in semi-arid Niger, to determine the influence of supplementation (no supplement, millet bran + simple superphosphate, or millet bran + simple superphosphate + blood meal) for cattle and mulching (0 or 3 t ha-1 of Aristida sieberiana straw) on soil fer...


Sangare, M.Fernández Rivera, S.Hiernaux, Pierre H.Y.Bationo, B. AndréPandey, V.S.[Influence of dry season supplementation for cattle on soil fertility and millet (Pennisetum glaucum L.) yield in a mixed crop/livestock production system of the Sahel]Influence of dry season supplementation for cattle on soil fertility and millet (Pennisetum glaucum L.) yield in a mixed crop/livestock production system of the Sahel

The effects of 4 years grazing by sheep and goats at various stocking rates on soil surface features, bulk density, organic C, N and P contents and pH were investigated in Sadore, Niger. Studies were also conducted in a fallow subjected to 9 years of intensive grazing. Although grazing reduced (P...


Hiernaux, Pierre H.Y.Bielders, Charles L.Valentin, ChristianBationo, B. AndréFernández Rivera, S.[Effects of livestock grazing on physical and chemical properties of sandy soils in Sahelian rangelands]Effects of livestock grazing on physical and chemical properties of sandy soils in Sahelian rangelands

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...


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

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

This study documents indigenous knowledge of breeds of cattle, sheep and goats in southwestern Niger, and includes both pastoralists and agropastoralists. Our study included sheep and goats in view of the increasing importance of small ruminants in livestock production systems in the Sahel since ...


Ayantunde, Augustine A.Kango, M.Hiernaux, Pierre H.Y.Udo, H.M.J.Tabo, Ramadjita[Herders' perceptions on ruminant livestock breeds and breeding management in Southwestern Niger]Herders' perceptions on ruminant livestock breeds and breeding management in Southwestern Niger

Mixed farming systems, combining crop and livestock activities, hold considerable promise for improved agricultural productivity and environmental conservation in semi-arid West Africa. Increasing population pressure and climatic changes have combined to render long-fallow periods less feasible a...


Williams, Timothy O.Hiernaux, Pierre H.Y.Fernández Rivera, S.Turner, M.[Livestock production and sustainable agricultural Development in semi-arid West Africa]Livestock production and sustainable agricultural Development in semi-arid West Africa

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