The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd Company, 1922 - 369 páginas |
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Resultados 6-10 de 42
Página 71
... latter consists of a main frame to which are pivoted two sup- plementary frames . Mounted within each one of these is a shaft carrying a series of concavo - convex discs , and the whole series is rolled over the ground . Adjusting ...
... latter consists of a main frame to which are pivoted two sup- plementary frames . Mounted within each one of these is a shaft carrying a series of concavo - convex discs , and the whole series is rolled over the ground . Adjusting ...
Página 80
... latter implement was perfected in America during the last quarter of the eighteenth century . The scythe seems to have appeared first among the ancient Romans . Before 1850 , the scythe or cradle and the sickle were the implements ...
... latter implement was perfected in America during the last quarter of the eighteenth century . The scythe seems to have appeared first among the ancient Romans . Before 1850 , the scythe or cradle and the sickle were the implements ...
Página 85
... latter principle has been utilized in practically all harvest- ing machines ever built ,, excepting some of the combined har- vesters constructed since 1903. Some form of the reel is also found on every harvesting machine which has had ...
... latter principle has been utilized in practically all harvest- ing machines ever built ,, excepting some of the combined har- vesters constructed since 1903. Some form of the reel is also found on every harvesting machine which has had ...
Página 98
... latter are called , the straw pile often becomes awkwardly high , and the machine is moved from it . Sometimes the straw is also dragged away by horses hitched to a large rack , an op- eration which is called " bucking the straw . " The ...
... latter are called , the straw pile often becomes awkwardly high , and the machine is moved from it . Sometimes the straw is also dragged away by horses hitched to a large rack , an op- eration which is called " bucking the straw . " The ...
Página 107
... latter figures it required 2 hours and 32 minutes at that time for the same operations . In 1896 , by the use of the combined harvester , this time had been reduced to 5.6 minutes . The cost of human labor per bushel had declined from ...
... latter figures it required 2 hours and 32 minutes at that time for the same operations . In 1896 , by the use of the combined harvester , this time had been reduced to 5.6 minutes . The cost of human labor per bushel had declined from ...
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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