The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd Company, 1922 - 369 páginas |
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Página 8
... continually migrating for many centuries . It is a plant that is easily influenced by environment and therefore particu- larly unstable in type . Since it has always been migrating to new environments , a complete change in type often ...
... continually migrating for many centuries . It is a plant that is easily influenced by environment and therefore particu- larly unstable in type . Since it has always been migrating to new environments , a complete change in type often ...
Página 19
... continually being transported from lower to upper leaves during the entire period of vegetation . Flowering takes place when enough material has been elaborated to nourish the appearing seeds . This migration of substance can take place ...
... continually being transported from lower to upper leaves during the entire period of vegetation . Flowering takes place when enough material has been elaborated to nourish the appearing seeds . This migration of substance can take place ...
Página 40
... continually operative , especially in connection with such qualities as rust resistance and hardiness against heat , drought or cold . Thus wheat naturally tends to adapt itself to its environment . Such crude methods of seed selection ...
... continually operative , especially in connection with such qualities as rust resistance and hardiness against heat , drought or cold . Thus wheat naturally tends to adapt itself to its environment . Such crude methods of seed selection ...
Página 55
... continually grown on the same farm under rational methods of culture . Undoubtedly , any seed may de- teriorate because of injuries arising from disease , improper cultivation or selection of seed , or from many other causes which ...
... continually grown on the same farm under rational methods of culture . Undoubtedly , any seed may de- teriorate because of injuries arising from disease , improper cultivation or selection of seed , or from many other causes which ...
Página 110
... continually repeat themselves in history , for the ancients were already well acquainted with intensive methods of farming . Summer Fallows . When land does not produce the usual crops , there is a wide practice of letting it rest one ...
... continually repeat themselves in history , for the ancients were already well acquainted with intensive methods of farming . Summer Fallows . When land does not produce the usual crops , there is a wide practice of letting it rest one ...
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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