The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd Company, 1922 - 369 páginas |
Dentro del libro
Resultados 11-15 de 70
Página 37
... average yield of 28.3 bushels per acre , while during the same years the un- 1 Georgics I. , lines 286-288 . 2 Neb . Bul . 32 , p . 91 . 3 Kan . Buls . 20 , 33 , 40 and 59 . 3 S # selected parent sort yielded only 22.5 bushels , an ...
... average yield of 28.3 bushels per acre , while during the same years the un- 1 Georgics I. , lines 286-288 . 2 Neb . Bul . 32 , p . 91 . 3 Kan . Buls . 20 , 33 , 40 and 59 . 3 S # selected parent sort yielded only 22.5 bushels , an ...
Página 38
... 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 AS A CAUSE OF VARIATION : Yield in grain of 100 plants , showing greater variation in ...
... 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 AS A CAUSE OF VARIATION : Yield in grain of 100 plants , showing greater variation in ...
Página 42
... average much poorer than either parent . Its great value lies in throwing together qualities and multi- plying variations , both of which may be developed by selec- tion . This greatly increased variation has been explained on the ...
... average much poorer than either parent . Its great value lies in throwing together qualities and multi- plying variations , both of which may be developed by selec- tion . This greatly increased variation has been explained on the ...
Página 69
... average amount sown per acre in the United States is 13 % bushels in the winter wheat regions , 12 bushels in the spring wheat regions , 7 to 9 pecks in the Middle Atlantic states , 6 to 8 pecks in the Mississippi and Ohio valleys , and ...
... average amount sown per acre in the United States is 13 % bushels in the winter wheat regions , 12 bushels in the spring wheat regions , 7 to 9 pecks in the Middle Atlantic states , 6 to 8 pecks in the Mississippi and Ohio valleys , and ...
Página 79
... average of one acre per day . ' Brewer , however , states that in England in 1844 seven persons usually cut one to one and one - half acres in ten hours . Besides being still widely used in China and Japan , the sickle is also a common ...
... average of one acre per day . ' Brewer , however , states that in England in 1844 seven persons usually cut one to one and one - half acres in ten hours . Besides being still widely used in China and Japan , the sickle is also a common ...
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