The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd, 1908 - 369 páginas |
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Página 163
... spores . ( 1 ) Aecidiospores ( injuring spores ) are the first spores found in the year . They occur on shrubs , or herbs other than grasses . ( 2 ) Uredospores ( blight spores ) appear in the early summer , and are often called summer ...
... spores . ( 1 ) Aecidiospores ( injuring spores ) are the first spores found in the year . They occur on shrubs , or herbs other than grasses . ( 2 ) Uredospores ( blight spores ) appear in the early summer , and are often called summer ...
Página 164
... spores that are formed , and these red summer spores , the uredospores , are thus enabled to drop off and float away upon the air to other wheat plants . If moisture is present they germinate at once , and the en- tire above process is ...
... spores that are formed , and these red summer spores , the uredospores , are thus enabled to drop off and float away upon the air to other wheat plants . If moisture is present they germinate at once , and the en- tire above process is ...
Página 165
... spores are formed . The floors of the cups start pali- sade - like chains of the spores , which , when mature , again take wings with the wind . These are the wheat infecting æcidio- spores with which we began , and the life cycle is ...
... spores are formed . The floors of the cups start pali- sade - like chains of the spores , which , when mature , again take wings with the wind . These are the wheat infecting æcidio- spores with which we began , and the life cycle is ...
Página 166
... spore beds beneath the bran layer , con- taining both uredospores and teleutospores that subsequently germinated . This demands a new line of investigation , for it has ... spores to the heading wheat . That the spores 166 THE BOOK OF WHEAT.
... spore beds beneath the bran layer , con- taining both uredospores and teleutospores that subsequently germinated . This demands a new line of investigation , for it has ... spores to the heading wheat . That the spores 166 THE BOOK OF WHEAT.
Página 167
... spores are thus brought to the wheat is shown by the fact that screened plants are not rusted , and that distilled water exposed to the air will gather great numbers of the spores in the short period of a half hour . The more soft and ...
... spores are thus brought to the wheat is shown by the fact that screened plants are not rusted , and that distilled water exposed to the air will gather great numbers of the spores in the short period of a half hour . The more soft and ...
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Términos y frases comunes
acreage agricultural amount annually Argentina average baked bread 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 grades of wheat grain grower grown harvest Hessian fly hybrid important increase India industry insects irrigation Kansas kernel land loss macaroni machine manure methods milling modern nitrogen North North Dakota operation Pacific coast phosphoric acid plow pounds practically price of wheat produced profitable railroads raised Red river valley Rept rotation Russia rust seed semolina shipped smut soil sown speculative spores spring wheat storage straw supply threshing tion trade transportation United variations varieties wheat crop wheat growing winter wheat Yearbook U. S. Dept yield
Pasajes populares
Página 57 - Argentine Republic. February and March — Upper Egypt. India. April — Lower Egypt, India. Syria, Cyprus, Persia, Asia Minor, Mexico, Cuba. May — Texas. Algeria. Central Asia, China, Japan. Morocco. June — California, Oregon. Mississippi, Alabama. Georgia. North Carolina, South Carolina, Tennessee, Virginia, Kentucky, Kansas, Arkansas. Utah, Colorado, Missouri. Turkey, Greece. Italy. Spain, Portujral, south of France.
Página 315 - Agronomy, Cornell University. If you raise five acres of any kind of grain you cannot afford to be without this book. It is in every way the best book on the subject that has ever been written. It treats of the cultivation and improvement of every grain crop raised in America in a thoroughly practical and accurate manner.
Página 17 - This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest.
Página 315 - The Cereals in America," by the same author, it treats of the cultivation and improvement of every one of the forage and fiber crops. With this book in hand, you have the latest and most up-to-date information available.
Página 315 - FD COBURN'S little book on Alfalfa a few years ago has been a profit revelation to thousands of farmers throughout the country, and the increasing demand for still more information on the subject has induced the author to prepare the present volume, which is by far the most authoritative, complete and valuable work on this forage crop published anywhere. It is printed on fine p;iper and illustrated with many full-page photographs that were taken with the especial view of their relation to the text....
Página 315 - By THOMAS F. HUNT, MS, D.Agri., Professor of Agronomy, Cornell University. If you raise five acres of any kind of grain you cannot afford to be without this book. It is in every way the best book on the subject that has ever been written. It treats of the cultivation and improvement of every grain crop raised in America in a thoroughly practical and accurate manner. The subject-matter includes a comprehensive and succinct treatise of wheat, maize, oats, barley, rye, rice, sorghum (kafir corn) and...
Página 57 - Columbia, Belgium, Holland, Great Britain, Denmark, Poland, Central Russia. September and October — Scotland, Sweden, Norway, North of Russia. November — Peru, South Africa.
Página 115 - Chief of the Bureau of Soils in the United States Department of Agriculture...
Página 315 - A complete, practical work giving descriptions of the more important insects attacking vegetables of all kinds with simple and inexpensive remedies to check and destroy them, together with timely suggestions to prevent their recurrence. A ready reference book for truckers, marketgardeners, farmers as well as others who grow vegetables in...
Página 315 - As a rule, a book of this sort is dry and uninteresting, but in this case it reads like a novel. The author has put into it his individuality. The story of the properties of the soils, their improvement and management, as well as a discussion of the problems of crop growing and crop feeding, make this book equally valuable to the farmer, student and teacher. There are many illustrations of a practical character, each one suggesting some fundamental principle in soil management. 303 pages.