General Discussion
In reply to the discussion: I'm sorry for the people on the Jersey Shore, BUT... [View all]Human101948
(3,457 posts)Agriculture in the delta has traditionally benefited from the water and silt deposited by the flood (remember that the silt comes from eroding basalt lava in the Ethiopian highlands). This silt made the Nile delta one of the richest agricultural areas in the world and the basis of one of the most ancient human civilizations. Irrigation and more intensive farming, combined with inadequate drainage, has created swamps. The rise in water tables has led to accumulation of harmful salts, fertilizers, and pesticides in the upper layers of the soil. Farmers have been forced to use about a million tons of artificial fertilizer as a substitute for the nutrients that no longer fill the flood plain.
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