The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd Company, 1922 - 369 páginas |
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Página 107
... . This reduction in cost of production represented a saving of about $ 91,000,000 for the United States on the wheat crop of 1907 . CHAPTER VII . CROP ROTATION AND IRRIGATION CROP ROTATION . YIELD AND COST OF PRODUCTION 107.
... . This reduction in cost of production represented a saving of about $ 91,000,000 for the United States on the wheat crop of 1907 . CHAPTER VII . CROP ROTATION AND IRRIGATION CROP ROTATION . YIELD AND COST OF PRODUCTION 107.
Página 108
... ROTATION AND IRRIGATION CROP ROTATION . The Effects of Continuous Cropping . - Different crops re- nove from and contribute to the soil elements of different kinds or in different proportions . The availability of plant food is also ...
... ROTATION AND IRRIGATION CROP ROTATION . The Effects of Continuous Cropping . - Different crops re- nove from and contribute to the soil elements of different kinds or in different proportions . The availability of plant food is also ...
Página 109
... or its abandonment . While there may be extenuating circumstances in pioneer times which will 1 8th U. S. Census , Agriculture , p . viii . excuse extensive methods of farming when the future must be CROP ROTATION AND IRRIGATION 109 VIII.
... or its abandonment . While there may be extenuating circumstances in pioneer times which will 1 8th U. S. Census , Agriculture , p . viii . excuse extensive methods of farming when the future must be CROP ROTATION AND IRRIGATION 109 VIII.
Página 110
... rotation of crops that saved the wasted year during which land used to lie fallow . In the middle of the nineteenth century , rotations were practiced which brought a wheat crop every fourth or fifth year , or twice in 6 years . The ...
... rotation of crops that saved the wasted year during which land used to lie fallow . In the middle of the nineteenth century , rotations were practiced which brought a wheat crop every fourth or fifth year , or twice in 6 years . The ...
Página 111
... rotation was practiced in the United States even as recently as 1902.1 At the close of the eighteenth century the deterioration of the soil became apparent , particulariy in Virginia and ... ROTATION IS CROP ROTATION AND IRRIGATION 111.
... rotation was practiced in the United States even as recently as 1902.1 At the close of the eighteenth century the deterioration of the soil became apparent , particulariy in Virginia and ... ROTATION IS CROP ROTATION AND IRRIGATION 111.
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Términos y frases comunes
acre agriculture Amer American amount annual Argentina average baked bran bread bucket shop bushels bushels of wheat Canada cars cents per bushel century cereals Chicago chinch bug climate combined harvester commercial corn cost crop rotation cultivation durum wheat early elevators England Europe experiment station export factor farm farmers fertilizers field flour germination gluten grower grown harvest header Hessian fly Hybrid important increased industry insects irrigation Kansas kernel land larvæ loss macaroni machine machinery manure methods miller milling Minnesota moisture nitrogen North Dakota operation Pacific coast phosphoric acid plow potash pounds practically produced profitable railroads raised Red river valley Report Rept rotation Russia rust seed shipped smut soil sown speculative spores spring wheat storage straw supply threshing tion transportation United varieties weeds wheat crop wheat growing wheat plant winter wheat Yearbook U. S. Dept yield