The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryOrange Judd Company, 1919 - 369 páginas |
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Página 164
... rust to break out as a spot or pustule , after the germination of the infecting spore , varies from 8 to 14 days , for it is dependent upon atmospheric conditions . This breaking out through the skin of the wheat plant is the result of ...
... rust to break out as a spot or pustule , after the germination of the infecting spore , varies from 8 to 14 days , for it is dependent upon atmospheric conditions . This breaking out through the skin of the wheat plant is the result of ...
Página 165
... rust more correctly and fully than any other ) are not essential . The cluster cup form of rust , found on barberry bushes in black stem rust , forms on common wild plants of the borage family in the case of orange leaf rust . In Europe ...
... rust more correctly and fully than any other ) are not essential . The cluster cup form of rust , found on barberry bushes in black stem rust , forms on common wild plants of the borage family in the case of orange leaf rust . In Europe ...
Página 166
... rust to succeeding crops , the observations of Bolley in 1904 and 1905 proved that seed from badly rusted wheat plants was quite uniformly infected in- ternally , there being spore beds beneath the bran layer , con- taining both ...
... rust to succeeding crops , the observations of Bolley in 1904 and 1905 proved that seed from badly rusted wheat plants was quite uniformly infected in- ternally , there being spore beds beneath the bran layer , con- taining both ...
Página 167
... rust infection . " The most effective rust in- fection weather may be described as muggy , showery , sultry , rather still hot days , with foggy , cool , dewy nights , at about the blossom period . Just following the infection , cool ...
... rust infection . " The most effective rust in- fection weather may be described as muggy , showery , sultry , rather still hot days , with foggy , cool , dewy nights , at about the blossom period . Just following the infection , cool ...
Página 168
... rust in the United States . Immense annual losses are suffered by the Australian , Russian and Argentine wheat fields . In some years the loss in England is 50 per cent . Nor is this the only form of loss that must be attributed to rust ...
... rust in the United States . Immense annual losses are suffered by the Australian , Russian and Argentine wheat fields . In some years the loss in England is 50 per cent . Nor is this the only form of loss that must be attributed to rust ...
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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