By F. Makken (auth.), A. Uzo Mokwunye (eds.)
Tropical Africa escaped from the glaciers that coated the temperate elements of the area in the course of the Ice Age. The legacy is that almost all of the guardian fabrics of the soils of tropical Africa are previous, hugely weathered and with out bases and phosphate-bearing minerals. conventional farming structures which have been fairly reliable and sustainable depended on lengthy fallow classes after one to 2 years of cropping to keep up the effective ability of the soils. in recent years and particularly in densely populated components, a significant classification of 'landless' farmers have 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 main conserving a degree staples has turn into an incredible problem to agricultural scientists in tropical Africa. to extend the nutrient offering energy of soils calls for the inputs of fertilizers. those could 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 definitely the right kinds and amounts of the goods to use to every soil, crop and cropping approach in addition to the facility of farmers to procure needful farm deal with ment skills.
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Extra resources for Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa
4. 5. 6. 7. 8. 9. 10. 11. 12. Aina PO, Lal R and Taylor GS (1977) Soil management in relation to soil erosion in the rainforest of western Nigeria. Pages 75-82 in SCS Soil Erosion: Prediction and Control. Special Publication 211 USA Auberville A (1949) Climats, forest et desertification de I'Afrique tropicale Soc Edit Geog Marit et Col Paris, 351 pp Ayanaba A and Lawson TL (1977) Diurnal changes in acetylene reduction in field-grow cowpea and soybeans. Soil Bioi Biochem 9: 125-129 Charreau C and Nicou R (1971) L'am6iioration du profil cultural dans les sols sableux et sablo argilcux de la zone tropicale seche Ouest Africaine et ses incidences agronomiques.
16. 17. 18. 19. 20. 21. 22. 23. 24. Holtzman JS (1988) Setting priorities for agricultural development in Africa. Food Policy: p 320-322 Hong CW (1989) An attempt to convince farmers ofthe usefulness of improved crop production technology through a 'Let-them-test-it' approach in Northern Ghana workshop on fertilizer technology transfer, September 27-29 (1988) Lome, Togo, International Fertilizer Development Center Idachaba FS (1985) Redirecting agricultural research, extension and training in Sub-Saharan Africa Conference on agricultural policy and its relationship to food policy in Sub-Saharan Africa, West Berlin International Institute of Tropical Agriculture (1988) IlTA Medium term plan (1988-1993) Ibadan, Nigeria Joly C (1985) The FAO fertilizer program in Africa.
Tapes can also be easily duplicated for distribution. Appropriate selection and effective use of extension methodologies can readily alleviate, or remove completely, most of the constraints associated with the execution of a fertilizer education program for mass adoption. Extension delivery by a national extension organization can be enhanced by training programs based on the extension methodologies described earlier. Such programs should include: • Training - to cover both farmer and extension agents and research conferences and meetings to appraise and review technology packages • Farm Broadcasts - to include radio, TV and video productions, and special campaigns • Demonstrations and Adaptation - to cover OFAR, SPAT, agricultural shows, field days, exhibitions etc • Publications - to cater for the production and distribution of assorted extension messages.
Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa by F. Makken (auth.), A. Uzo Mokwunye (eds.)