Farm Development: An Introductory Book in Agriculture, Including a Discussion of Soils, Selecting & Planning Farms, Subduing the Fields, Drainage, Irrigation, Roads, Fences, Together with Introductory Chapters Concerning Farm Business, and the Relations of General Science to AgricultureOrange Judd Company, 1910 - 391 páginas |
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Página 7
... serve both as a general fund of in- formation to all who farm and as the substance of instruction in agriculture in schools . The second provided for a system of schools especially devoted to country life . Along with the latter ...
... serve both as a general fund of in- formation to all who farm and as the substance of instruction in agriculture in schools . The second provided for a system of schools especially devoted to country life . Along with the latter ...
Página 25
... serve to show differences in engines , plants and animals as to their effectiveness in changing latent energy into active forms useful to man . They emphasize the great importance of properly understanding the relation exist- ing ...
... serve to show differences in engines , plants and animals as to their effectiveness in changing latent energy into active forms useful to man . They emphasize the great importance of properly understanding the relation exist- ing ...
Página 36
... served as a stu- pendous motor to provide immense areas of finely pul- verized mixed soils suited to growing valuable crops . Owing to some astronomical or geological phenomenon not well understood , the sun failed to heat this zone as ...
... served as a stu- pendous motor to provide immense areas of finely pul- verized mixed soils suited to growing valuable crops . Owing to some astronomical or geological phenomenon not well understood , the sun failed to heat this zone as ...
Página 40
... serve as hospitable homes to useful soil bacteria , and are easily handled with cultivating implements . Assorted till formed poor soils . - Wherever the water assorted the great body of materials drifted along by the glacier , some ...
... serve as hospitable homes to useful soil bacteria , and are easily handled with cultivating implements . Assorted till formed poor soils . - Wherever the water assorted the great body of materials drifted along by the glacier , some ...
Página 44
... sheet as it receded northward served as a dam to the waters , and this so - called " Ancient Lake Agassiz " had its outlet to the southward where the Red River of the North and the Minnesota river now have 44 FARM DEVELOPMENT.
... sheet as it receded northward served as a dam to the waters , and this so - called " Ancient Lake Agassiz " had its outlet to the southward where the Red River of the North and the Minnesota river now have 44 FARM DEVELOPMENT.
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Farm Development; An Introductory Book in Agriculture, Including a ... W. M. Hays Sin vista previa disponible - 2017 |
Términos y frases comunes
acre agricultural animals better biped bottom brace building canal capillary capillary action capstan carry cement cents clay clover construction corn corner post cost crop rotation crops cubic yard cultivation culverts datum deep depth drain tiles drainage earth engine expense farm home farmers farmstead feet fence fields flood water flow Fresno scraper furrow-slice furrows gate glacial glacier grade grain Grass gravel ground water height Illustrated inches instrument irrigation labor lake Lake Agassiz layer limestone low area macadam material mile Minnesota Minnesota river Mississippi river mixed moisture necessary open ditch outlet particles peat plow practical profitable rain rainfall reversible road machine river road roller roadside roadway rock roots rotation rural sand schools showing shown in Figure side soil spade station stone stream stumps subsoil tile drains tion tivated trees wagon wheat wire fence