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Showing items 71200 through 71208 of 73375.La Division mixte CEA/fao de lfagriculture a été invitée à collaborer
Black cotton soils are one of those clays with a high content of montmorillenite. These have a very high plasticity leading to high rates of expansion on wetting followed by shrinkage and considerable cracking on drying.
The report is a result of input solicited from Member States and regional partners, and extensive desk review of available documentation and internet resources on drought and desertification, as well as information exchange with and comment from various
L’Ethiopie dispose d’un potentiel agricole considérable, il existe plusieurs obstacles fondamentaux sur la voie des l’exploitation de ce potentiel.
Climate variability lies behind much of the prevailing poverty, food insecurity and weak economic growth in Africa today. Climate change will increase this variability; the severity and frequency of droughts, floods and storms will increase, leading to more water stress.
The project was first conceived as a “Transnational project on the Management of Major Regional Aquifer in N.E. Africa” during the UNCOD held in Nairobi in 1977 and that it had been taken up by ADALCO in 1987. He pointed out that the sandstone aquifer occupying an area of about 2,000,0000 sq.
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