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DocumentThe Soil, how to improve the soil
Better Farming Series, no. 6 (1976)
1976Also available in:
No results found.This manual is a translation and adaptation of Bile sol - comment ameliorer le sol?", published by the Agri-ServiceAfrique of the lnstitut africain pour le developpement economique et social (INADES). The course covers manure, compost, green manure, nitrogen, phosphorus and potassium fertilizers, and how to read commercial fertilizer labels and how to apply fertilizers. -
Book (stand-alone)Application of nitrogen-fixing systems in soil improvement and management
FAO Soils Bulletin No.49
1982Also available in:
No results found.In view of the continuing increase in cost and scarcity of mineral fertilizers resulting from the use of high-cost fossil energy, there is renewed interest in organic recycling and biological nitrogen-fixation to improve soil fertility and productivity. The workshop in Alexandria recommended the further promotion of research, development, application and dissemination of information available on various aspects of biological nitrogen-fixation, including symbiotic systems of rhizobia/legume and Azolla/blue-green algae, and free-living nitrogen-fixing bacteria and blue-green algae. It is hoped that the compilation of various aspects of nitrogen-fixation under one cover in this Bulletin will be of interest and assistance to research workers and extension planners concerned with the further development and refinement of these natural systems for soil improvement and management. -
DocumentShortened bush-fallow rotations and sustainable rural livelihood 2006
Also available in:
No results found.In Ghana, increased population pressure and the need to cultivate greater land area have resulted in reduced fallow periods. As a consequence, the restoration of soil fertility is insufficient to allow recovery of secondary forest and rejuvenation of exhausted soils. Fallows are of ecological, economic and social importance to rural people and to the nation at large. A majority of farmers depend on fallowing, using little or no fertilisers to improve impoverished soils. This implies that farm production (and income) will consistently decline over the years. Several promising technologies have been developed in the last decade to address these issues. On‑farm trials have demonstrated the value of maize‑legume relays, permanent plantain, cocoa‑shade trees, planted tree fallow, and yam‑legume relays in improving yields and restoring soil fertility
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