Progressive Agricutlure, 1916, Tillage, Not Weather, Controls Yield
The book Progressive Agricutlure, 1916, Tillage, Not Weather, Controls Yield was written by author Campbell, Hardy Webster, 1850- [from Old Catalog] Here you can read free online of Progressive Agricutlure, 1916, Tillage, Not Weather, Controls Yield book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Progressive Agricutlure, 1916, Tillage, Not Weather, Controls Yield a good or bad book?
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Cut No. 31 shows Mr. Moyer's field of summer tilled wheat after it was cut in the hot dry year of 1913. This field of 15 acres averaged 34^ bushels per acre, with plenty of fields in the surrounding country going from 8 to 12 bushels per acre. Cut No. 32 is Mr. Moyer's 1915 crop on land summer tilled in 1914, 51| bushels per acre. Don't forget that this is fully double that of the majority of wheat fields around Yuma and also that the rainfall recorded from the first of April to the cutting of ...this crop is more than double any other year. Then why does this summer tilled field produce so much more unless there is some- thing in the theory of increased fertility from summer tilling? Then, again remember that Mr. Moyer's high yield in 1915 with its heavy rainfall is only 4 bushels more than in 1914 with less than half the rain. Is it the weather or tillage? This No. 32, is a close second to No. 39, a summer tilled field grown in the dry year of 1904 at Holdrege, Nebraska and yielding 54J bushels Progressive Agriculture 73 per acre of 64 pound wheat, and referred to later on.
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