The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryOrange Judd Company, 1919 - 369 páginas |
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Página 109
... crops in spite of extensive culture . Often , as has been the case in the United States from the very beginning , when the soil has lost its fertility so that it will no longer yield standard crops , the ... CROP ROTATION AND IRRIGATION 109.
... crops in spite of extensive culture . Often , as has been the case in the United States from the very beginning , when the soil has lost its fertility so that it will no longer yield standard crops , the ... CROP ROTATION AND IRRIGATION 109.
Página 110
... crop of the following year . Historical . The farmers of ancient Egypt rotated crops . The same practice was followed in the time of Virgil , as well as the fallowing of land . The three - field system was not new in England in Norman ...
... crop of the following year . Historical . The farmers of ancient Egypt rotated crops . The same practice was followed in the time of Virgil , as well as the fallowing of land . The three - field system was not new in England in Norman ...
Página 111
... wheat plot . Good cultiva- tion alone was not sufficient to produce the best crops , and 1 Yearbook U. S. Dept. Agr . , 1902 , p . 520 . TYPICAL WHEAT FIELD ON A FARM WHERE CROP ROTATION IS CROP ROTATION AND IRRIGATION 111.
... wheat plot . Good cultiva- tion alone was not sufficient to produce the best crops , and 1 Yearbook U. S. Dept. Agr . , 1902 , p . 520 . TYPICAL WHEAT FIELD ON A FARM WHERE CROP ROTATION IS CROP ROTATION AND IRRIGATION 111.
Página 112
An Economic History and Practical Manual of the Wheat Industry Peter Tracy Dondlinger. TYPICAL WHEAT FIELD ON A FARM WHERE CROP ROTATION IS FOLLOWED other crops gave a poorer yield on land that had.
An Economic History and Practical Manual of the Wheat Industry Peter Tracy Dondlinger. TYPICAL WHEAT FIELD ON A FARM WHERE CROP ROTATION IS FOLLOWED other crops gave a poorer yield on land that had.
Página 113
... crop in a period of four years , gave almost as much wheat and more profitable returns than did the land which produced four crops of wheat in succession . " ' 1 Ex- periments ... crop follows either corn or CROP ROTATION AND IRRIGATION 113.
... crop in a period of four years , gave almost as much wheat and more profitable returns than did the land which produced four crops of wheat in succession . " ' 1 Ex- periments ... crop follows either corn or CROP ROTATION AND IRRIGATION 113.
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