| http://www.w3.org/ns/prov#value | - In a summary of findings at the end of twelve years it was stated that although periods of drought are liable to occur at any time, and especially after midsummer, yet only twice during these twelve years was the water content in the surface six inches of soil reduced to the hygroscopic coefficient, i.c. approximately the point where water is non-availahle for growth (Weaver aid Himmel, '31).
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