Read The Journal of the Franklin Institute, Vol. 171: Devoted to Science and the Mechanic Arts; Nos. 1021 1026; January June, 1911 (Classic Reprint) - Franklin Institute (Philadelphia PA-USA) file in PDF Online

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Excerpt from The Journal of the Franklin Institute, Vol. 171: Devoted to Science and the Mechanic Arts; Nos. 1021 1026; January June, 1911The same investigators5 determined nitrates in soils to a depth of four feet under corn, potatoes, alfalfa and clover.As between the cultivated crops corn and potatoes there was a fairly definite relation, the nitrates being higher under

Title : The Journal of the Franklin Institute, Vol. 171: Devoted to Science and the Mechanic Arts; Nos. 1021 1026; January June, 1911 (Classic Reprint)
Author : Franklin Institute (Philadelphia PA-USA)
Language : en
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Type : PDF, ePub, Kindle
Uploaded : Apr 07, 2021

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