This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1895 Excerpt: ...did not receive the same manure from year to year during the first eight years, 1844-1851; but, with a few special exceptions, each has been treated uniformly during the forty-two years, 1852-1893, inclusive. Accordingly, most of the comparisons that have been drawn refer to the period of forty years, 1852-1891. ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1895 Excerpt: ...did not receive the same manure from year to year during the first eight years, 1844-1851; but, with a few special exceptions, each has been treated uniformly during the forty-two years, 1852-1893, inclusive. Accordingly, most of the comparisons that have been drawn refer to the period of forty years, 1852-1891. Referring first to the results obtained on the farmyard manure plat, the average annual produce over the forty years was 34J bushels, and over the fifty years 33 bushels; in the one case nearly 7 bushels and in the other 5 bushels more than the average of the United Kingdom under ordinary rotation; in both not far short of three times the average produce of the United States, and more than two and one-half times the average of the whole of the wheat lands of the world. Without any manure whatever the average annual produce was 13 bushels over the forty, and 13 bushels over the iilty years; in both cases more than the average of the United States under ordinary cultivation, including their rich prairie lands, and about the average of the whole world. The results on the artificially manured plats show that mineral manures alone gave very little increase of produce; that nitrogenous manures alone gave considerably more than mineral manures alone; but that mixtures of the two gave very much more than either separately. In two cases the average produce by mixed mineral and nitrogenous manure was more than that by the annual application of farmyard manure; and in nine out of the twelve cases in which such mixtures were used the average yield per acre was from 2 to 8 bushels more than the average yield of the United Kingdom (nearly 28 bushels) under ordinary rotation. Such were the results obtained for forty or fifty years in succession o...
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