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Get Alleviating Soil Fertility Constraints to Increased Crop PDF

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 components of the area throughout the Ice Age. The legacy is that almost all of the mother or father 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 strong and sustainable depended on lengthy fallow sessions after one to 2 years of cropping to keep up the effective capability of the soils. lately and particularly in densely populated parts, a vast category of 'landless' farmers have all started to domesticate marginal lands or to invade the 'forest reserves' thereby exacerbating the issues of land and environ­ psychological degradation. of soil fertility that may facilitate the creation of sufficient amounts of the primary preserving a degree staples has turn into an enormous problem to agricultural scientists in tropical Africa. to extend the nutrient­ delivering strength of soils calls for the inputs of fertilizers. those could be natural or inorganic. The potency with which those externally provided inputs can raise agricultural construction and decrease soil and environmental deterioration relies at the skill of scientists to figure out the suitable varieties and amounts of the goods to use to every soil, crop and cropping method in addition to the facility of farmers to procure considered necessary farm deal with­ ment skills.

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Additional info for Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa

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Pages 143-151 In: DeBoodt M and Gabriels 0 (eds) Assessment of Erosion. John Wiley & Sons, Chichester 25. Lawson TL and Juo ASR (1979) Climate and soil conditions in the Sub-humid and Semi-arid Regions of West Africa with special reference to maize production. A paper presented at the first SAFGRAD Maize Production Workshop, Ouagadougou, Upper Volta, Feb. 20-23, 1979 26. Lawson TL, Oguntoyinbo JS and Ojo 0 (1979) Agriclimatic conditions of West Africa. A paper presented at the IITA Annual Resear~h Conference on Soil and Climatic Resources and Constraints in Relation to Food Crop Production in West Africa.

Nn 1·2 ()(SERT IP~ETp """"MI r....... od .. NJAR Y O~ ~ RAINFALLlCSlOPP· IN(; ~N • ,~ AREA STATIONS Fig. 1. Generalized agroclimatic map of West Africa [source : 27]. 35 ISOW . : •. : •. _ -:,' ........ ,' S ....... - . -- S ' .. , ';"':,~... ' - S - -.... -,-/-L/ . --c:;:. '- ~ - -- ~ -ss _~ . - ,,- ..... ,... ~S \ .. ' . 3 - ..... ~~:' ...... --4 : looN 5"N Fig. 2, West Africa: Composite map of vegetation zones and duration of humid period (No, of months with precipitation Pot evapotranspiration), Adopted from Steiner [45] and Lawson [27], Legend - - - Number of months with rainfall;;;' Pot evapot; - - - Boundries of vegetation zones S = Sahel, SS = Sudan Savanna; ....

Recent research by IFDC and the University of Hohenheim at ISC on soil mulches showed that considerable increases in water use efficiency and crop yields can be achieved by the use of soil mulches. Surface mulching plays an unparalleled role in protecting the soil surface, in reducing runoff and soil erosion and thus prevent or slow down the deterioration of the soil [23]. The use of organic mulches such as crop residue or prunings from woody shrubs associated with crops in the field in an alley cropping system systematically adds organic matter to the soil.

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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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