The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryOrange Judd Company, 1919 - 369 páginas |
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Página 55
... weed and disease dissemination , as well as a powerful influence against proper methods of plant breeding .. Selection cannot be suc- cessfully practiced in improving the quality of grain if the seed must be given up every few years for ...
... weed and disease dissemination , as well as a powerful influence against proper methods of plant breeding .. Selection cannot be suc- cessfully practiced in improving the quality of grain if the seed must be given up every few years for ...
Página 62
... weeds grow ; and in America iron plows were supposed to poison the soil and to prevent the growth of crops . It was not until the end of the seventeenth century that plows began to be improved . The moldboard was then made of iron and ...
... weeds grow ; and in America iron plows were supposed to poison the soil and to prevent the growth of crops . It was not until the end of the seventeenth century that plows began to be improved . The moldboard was then made of iron and ...
Página 64
An Economic History and Practical Manual of the Wheat Industry Peter Tracy Dondlinger. THE TYPICAL FARM WHEAT DRILL WITHOUT FERTILIZER ATTACHMENT Increases the yield , is most destructive to weeds and.
An Economic History and Practical Manual of the Wheat Industry Peter Tracy Dondlinger. THE TYPICAL FARM WHEAT DRILL WITHOUT FERTILIZER ATTACHMENT Increases the yield , is most destructive to weeds and.
Página 65
... weeds and insects , and is the most economical in farm management . For winter wheat , the ground is plowed as soon after harvest as is practi- cable . This destroys the weeds before they ripen their seed and gives time for a compact ...
... weeds and insects , and is the most economical in farm management . For winter wheat , the ground is plowed as soon after harvest as is practi- cable . This destroys the weeds before they ripen their seed and gives time for a compact ...
Página 66
... weeds at a disadvantage , especially in spring wheat . Drilling also de- creases the danger from drought , winterkilling , and the blow- ing of soil by the winds . The snow lodged in the furrows left by the drill affords protection and ...
... weeds at a disadvantage , especially in spring wheat . Drilling also de- creases the danger from drought , winterkilling , and the blow- ing of soil by the winds . The snow lodged in the furrows left by the drill affords protection and ...
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acre agriculture amount annual Argentina average baked bread broadcast seeder bucket shop bushels bushels of wheat Canada cars cents per bushel century cereals Chicago climate combined harvester commercial corn cost crop rotation cultivation Dakota durum wheat early elevators England Europe experiment station export factor farm farmers feet fertilizers flour germination gluten grain grower grown harvest header Hessian fly Hybrid important increased industry insects irrigation Kansas kernel land larvæ loss macaroni machine machinery manure methods milling moisture nitrogen North North Dakota operation Pacific coast phosphoric acid plow potash pounds practically primary markets produced profitable railroads raised Red river valley Rept rotation Russia rust seed shipped smut soil sown speculative spores spring wheat storage straw supply threshing tion trade transportation United varieties weeds wheat crop wheat growing wheat plant winter wheat Yearbook U. S. Dept yield