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Journal Articles & Books
December 1978
Nepal
Bangladesh
Philippines
Malaysia
Afghanistan
China
Iran
India
Pakistan
Vietnam
Thailand
Asia

The Study Tour was financed by the UNDP and had the following objectives. To gain knowledge and experience in: - The multiplication of Azolla as a source of biological nitrogen, particular attention being paid to propagation of Azolla and its protection form disease, insect damage and adverse climatic conditions. - Harvesting and agricultural use of Azolla.

Journal Articles & Books
December 1977
Kenya
Morocco
Nigeria
Philippines
China
Tanzania
India
Australia
Canada
Tunisia
Venezuela
Malawi
Pakistan
Ghana

A major problem facing the areas already under cultivation, is the seriousness of soil degradation and loss of soil fertility due to indiscriminate misuse of agricultural lands, forests and grazing lands. The modern thinking assigns to soil conservation a comprehensive and more positive role than in the past.

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