The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd Company, 1922 - 369 páginas |
Dentro del libro
Resultados 6-10 de 33
Página 37
... selection of wheat as early as 1819. The Belgian horti- culturist , Van Mons , scientifically practiced selection before 1835. The works of Le Couteur , the English breeder , show that selection in wheat was early practiced , but never ...
... selection of wheat as early as 1819. The Belgian horti- culturist , Van Mons , scientifically practiced selection before 1835. The works of Le Couteur , the English breeder , show that selection in wheat was early practiced , but never ...
Página 38
... selected wheat seed during the years 1900 to 1902 at the Canada experiment farms gave an average gain of about 3.6 per cent in favor of selection . Principles differ- ing somewhat from those usually followed in selection were 2 CROSSING ...
... selected wheat seed during the years 1900 to 1902 at the Canada experiment farms gave an average gain of about 3.6 per cent in favor of selection . Principles differ- ing somewhat from those usually followed in selection were 2 CROSSING ...
Página 39
... selection alone the yield of wheat can be materially increased , even in a few years . The gain from the increased yield is much greater than the cost of mak- ing the selection , if the work is carried on systematically through a series ...
... selection alone the yield of wheat can be materially increased , even in a few years . The gain from the increased yield is much greater than the cost of mak- ing the selection , if the work is carried on systematically through a series ...
Página 40
... 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 grown much ...
... 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 grown much ...
Página 41
... selecting a stock with which to begin , it is advantageous to draw from a variety already improved by selection , but the breeding of wheat should not be limited to the few very best wheats , for a IMPROVEMENT OF WHEAT- 41.
... selecting a stock with which to begin , it is advantageous to draw from a variety already improved by selection , but the breeding of wheat should not be limited to the few very best wheats , for a IMPROVEMENT OF WHEAT- 41.
Contenido
1 | |
29 | |
47 | |
58 | |
73 | |
100 | |
108 | |
109 | |
237 | |
239 | |
246 | |
303 | |
321 | |
326 | |
359 | |
360 | |
148 | |
170 | |
188 | |
201 | |
214 | |
361 | |
363 | |
364 | |
365 | |
Otras ediciones - Ver todas
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