By F. Makken (auth.), A. Uzo Mokwunye (eds.)

ISBN-10: 079231221X

ISBN-13: 9780792312215

ISBN-10: 9401132240

ISBN-13: 9789401132244

Tropical Africa escaped from the glaciers that coated the temperate elements of the area throughout the Ice Age. The legacy is that the majority of the guardian fabrics of the soils of tropical Africa are previous, hugely weathered and with out bases and phosphate-bearing minerals. conventional farming platforms that have been rather sturdy and sustainable trusted lengthy fallow sessions after one to 2 years of cropping to keep up the efficient potential of the soils. in recent years and particularly in densely populated parts, a massive type of 'landless' farmers have began to domesticate marginal lands or to invade the 'forest reserves' thereby exacerbating the issues of land and environ­ psychological degradation. of soil fertility that would facilitate the creation of enough amounts of the primary protecting a degree staples has turn into a massive problem to agricultural scientists in tropical Africa. to extend the nutrient­ delivering energy of soils calls for the inputs of fertilizers. those might be natural or inorganic. The potency with which those externally provided inputs can elevate agricultural construction and decrease soil and environmental deterioration depends at the skill of scientists to figure out the fitting varieties and amounts of the goods to use to every soil, crop and cropping method in addition to the power of farmers to obtain needful farm deal with­ ment skills.

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U. ). Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa, 33-44. © 1991 Kluwer Academic Publishers. L. K. Sivakumar 2 1 Agroclimatologist, International Institute of Tropical Agriculture, Ibadan, Nigeria 2 Principal Agroclimatologist, ICRISAT Sahelian Center, Niamey, Niger Key words: Sub-Saharan Africa, climate, rainfall, erodibility, mulch Abstract The alarming food deficits projected for sub-Saharan African from recent production figures make it mandatory that no effort be spared in reversing the trend of declining yields.

Pages 107-114 In: Rijks R and Mathys G (eds) Proceedings of the seminar on Agrometeorology and Crop protection in the Lowland Humid and Sub-Humid Tropics. Cotonou, Benin 7-11 July 1986. World Meteorological Organization, Geneva, Switzerland 35. Nicholson SE (1982) The Sahel: a climatic perspectivc. Club du Sahel, Paris, France: Organization for Economic Cooperation and Development (OECD) 36. Nicholson SE (1983) The climatology of Sub-Saharan Africa. pp 71-92 In: Environmental change in the West African Sahel.

Fertilizer technology adoption readily lends itself to these types of special campaigns that are especially suitable for implementation by national extension organizations. Video production This is the latest visual medium that has been introduced to support extension activities. The medium can be used at national levels for television broadcasting, or at regional and local levels as part of mobile training units for use by farmers and extension workers. Although the initial capital outlay may look prohibitive for most of the countries in the region, the long-term costeffectiveness makes it a very attractive training and demonstration medium with much potential.

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Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa by F. Makken (auth.), A. Uzo Mokwunye (eds.)


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