Publisher's Synopsis
Excerpt from Vithumus Doctrine of Soil Treatment, Soil Up-Building: The Proper Agricultural Relations of Vithumus and Fertilizers
The first instances of intensive farming, were along the val leys of the Nile, the Tigris and Euphrates rivers; either upon lands exposed to periodic over?ow. Or upon those to which the river water was brought by irrigation: the fertility of such inundated or irrigated soils was phenomenal. But the reasons therefor were not fully understood.
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