The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryOrange Judd Company, 1919 - 369 páginas |
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Página 33
... variations of the wheat plant and its environment . Historically , it is unknown whether the plant or the environ- ment was first the subject of improvement . The subsequent HARVESTING A 32 - BUSHEL - PER - ACRE CROP IMPROVEMENT OF ...
... variations of the wheat plant and its environment . Historically , it is unknown whether the plant or the environ- ment was first the subject of improvement . The subsequent HARVESTING A 32 - BUSHEL - PER - ACRE CROP IMPROVEMENT OF ...
Página 35
... Variation . It has been recognized for at least a century that wheat is capable of variations . These may be peculiar to the plant itself , and may occur although the environment re- mains constant . Variation in this sense became ...
... Variation . It has been recognized for at least a century that wheat is capable of variations . These may be peculiar to the plant itself , and may occur although the environment re- mains constant . Variation in this sense became ...
Página 36
... variation may be , the scientific wheat grower utilizes the process in two different ways , by the simple process of ... variations in any direction . While conscious selection is a modern process which has attained commercial importance ...
... variation may be , the scientific wheat grower utilizes the process in two different ways , by the simple process of ... variations in any direction . While conscious selection is a modern process which has attained commercial importance ...
Página 38
... VARIATION : Yield in grain of 100 plants , showing greater variation in yield of hybrid than of parents . Yield of hybrid shown by x line . ( After Hays . ) utilized by Lyon . His selections were for quality rather than quantity . He ...
... VARIATION : Yield in grain of 100 plants , showing greater variation in yield of hybrid than of parents . Yield of hybrid shown by x line . ( After Hays . ) utilized by Lyon . His selections were for quality rather than quantity . He ...
Página 39
... variations above mentioned may be influenced . Prolificacy of races may be fixed . Another im- portant quality to be considered is vigor . Indeed , it has been held that the vigor and productiveness of the parent are far more important ...
... variations above mentioned may be influenced . Prolificacy of races may be fixed . Another im- portant quality to be considered is vigor . Indeed , it has been held that the vigor and productiveness of the parent are far more important ...
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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