1957 Volume 21 Issue 4 Pages 230-234
The beneficial effect of various sparingly soluble phosphates such as Algerian rock phosphates, when mixed with organic matter like cow-pea and added to the alkali soils, is clear from the fall in pH of these alkali soils. Not only the pH is lowered but also the exchangeable calcium, and, the availability of phosphates increases markedly. Hence, these alkali soils ultimately become fertile and cultivable.
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