The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd, 1908 - 369 páginas |
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Página 31
... far - reaching in impor- tance , and the thorough , effectual and scientific methods employed . As new interests arose , were investigated , and in- creased in importance , they were assigned to a new IMPROVEMENT OF WHEAT 31.
... far - reaching in impor- tance , and the thorough , effectual and scientific methods employed . As new interests arose , were investigated , and in- creased in importance , they were assigned to a new IMPROVEMENT OF WHEAT 31.
Página 35
... methods may be used , hybridization and change of environ- ment . Only those variations which may occur or be induced independently of environment are considered in this chapter . Others are treated in subsequent chapters . Variations ...
... methods may be used , hybridization and change of environ- ment . Only those variations which may occur or be induced independently of environment are considered in this chapter . Others are treated in subsequent chapters . Variations ...
Página 39
... method frequently used is the selection of plump kernels from grain in the bulk . While there is doubtless some ad- vantage in this method , it cannot give the best results , for many of the plump kernels may come from imperfectly ...
... method frequently used is the selection of plump kernels from grain in the bulk . While there is doubtless some ad- vantage in this method , it cannot give the best results , for many of the plump kernels may come from imperfectly ...
Página 40
... methods of seed selection as have been practiced in conjunction with natural selection have been the factors in evolving Turkey wheat so that it is more drought resistant than formerly , and has im- proved in hardiness so that it can be ...
... methods of seed selection as have been practiced in conjunction with natural selection have been the factors in evolving Turkey wheat so that it is more drought resistant than formerly , and has im- proved in hardiness so that it can be ...
Página 43
... method , the seeds to be tested and selected are planted individually in rows 4 or 5 inches apart . If any promising plants develop , 100 seeds from each are again planted . These groups of plants from single parents are called ...
... method , the seeds to be tested and selected are planted individually in rows 4 or 5 inches apart . If any promising plants develop , 100 seeds from each are again planted . These groups of plants from single parents are called ...
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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 farm farmers fertilizers 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 operations Pacific coast phosphoric acid plow potash pounds practically price of wheat produced profitable railroads 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