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Book (stand-alone)Improved production systems as an alternative to shifting cultivation
FAO Soils Bulletin No. 53
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No results found.Shifting cultivation, under its diverse forms of slash and burn system, is a traditional method of cultivating tropical upland soils, mostly for subsistence purposes. This traditional system of cultivation is in ecological balance with the environment and does not irreversibly degrade the soil resource, provided a sufficient length of fallow is allowed for soil restoration. However, increasing population pressures necessitate more intensive use of land. The consequence is extended cropping perio ds and shortened fallows. In the extreme, short fallow periods are no longer adequate to restore the soil?s productive capacity. The present set of papers is the result of an expert consultation on the subject. The object of the consultation was to provide guidelines for future activities and policy decisions in this subject area. The ultimate objective is to provide feasible alternatives for improving these practices or replacing them with systems of permanent cropping. -
No Thumbnail AvailableBook (stand-alone)Grain storage techniques - Evolution and trends in developing countries 1994
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No results found.The importance of grain storage as part of the marketing, distribution and food security system is well recognized. As early as 1971, the Group for Assistance on Systems relating to Grain After-harvest (GASGA), in which FAO participates, brought together experts and coordinated activities on research and development. In 1978, following the resolution of the UN General Assembly which called for the reduction of post-harvest losses, FAO launched the Special Action Programme for Prevention of Food Losses (PFL). Since then more than 250 projects have been implemented world wide under this programme. During recent years, as a result of privatization and liberalization of trade, the organization and management of grain storage has changed in many developing countries. This restructuring of the grain storage sector has created a demand for information and knowledge from the emerging private entrepreneurs operating in the storage sector. In the previous storage and distribution systems, f unctions such as collection, storage, regulation of supplies, food security and price control, were often entrusted to parastatal marketing boards. Skills have been developed, facilities have been installed and methods taught to their staff, often at high cost. These skills have now to be acquired by the new "actors" of the privatized storage and distribution system. The purpose of the Bulletin is to contribute to the transfer of knowledge on grain storage to persons involved in the storage of g rain. This joint production FAO-GASGA Bulletin is aimed at private and public sector storage operators, extension workers, students and researchers. However, the varied topics covered in the chapters are intended for persons each having different interests in the subject. -
No Thumbnail AvailableBook (stand-alone)INTEGRATED ENERGY SYSTEMS IN CHINA - THE COLD NORTHEASTERN REGION EXPERIENCE 1994
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