The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd, 1908 - 369 páginas |
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Página 172
... fly B HESSIAN FLY : a , ADULT ; b , PUPA ; c , LARVA . ENLARGED is now known to flourish even where spring crops are exclusive- ly grown . EFFECT OF LARVAE ON WHEAT . - At first the plant seems to be stimulated , and turns a dark green ...
... fly B HESSIAN FLY : a , ADULT ; b , PUPA ; c , LARVA . ENLARGED is now known to flourish even where spring crops are exclusive- ly grown . EFFECT OF LARVAE ON WHEAT . - At first the plant seems to be stimulated , and turns a dark green ...
Página 173
... fly . The outbreak of the Hessian fly in 1900 was the most notable of recent years . The total loss for the United States was estimated at $ 100,000,000 , and milling operations were seriously hampered in the worst affected region . The ...
... fly . The outbreak of the Hessian fly in 1900 was the most notable of recent years . The total loss for the United States was estimated at $ 100,000,000 , and milling operations were seriously hampered in the worst affected region . The ...
Página 174
... flight fre- quently occurs , especially in maritime districts . There are a number of species of Hemiptera that are often mistaken for chinch bugs . 1 Marlett , Principal Insect Enemies of Growing Wheat ; Osborn , Hessian Fly in the ...
... flight fre- quently occurs , especially in maritime districts . There are a number of species of Hemiptera that are often mistaken for chinch bugs . 1 Marlett , Principal Insect Enemies of Growing Wheat ; Osborn , Hessian Fly in the ...
Página 175
... Hessian fly , but în appearance and habit it is entirely distinct . It is believed to be identical with the notorious wheat midge of Europe , and it may also have been in- 1 Yearbook U. S. Dept. Agr . , 1904 , p . 466 . 2 Webster , The ...
... Hessian fly , but în appearance and habit it is entirely distinct . It is believed to be identical with the notorious wheat midge of Europe , and it may also have been in- 1 Yearbook U. S. Dept. Agr . , 1904 , p . 466 . 2 Webster , The ...
Página 181
... Hessian fly or the wheat midge . Good seed should always be sown , and in well prepared soil , for a vigorous crop can best withstand attacks . Insect Enemies of Stored Wheat . - Several species of insects , popularly known as weevils ...
... Hessian fly or the wheat midge . Good seed should always be sown , and in well prepared soil , for a vigorous crop can best withstand attacks . Insect Enemies of Stored Wheat . - Several species of insects , popularly known as weevils ...
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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 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