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 |
Dentro del libro
Resultados 1-5 de 30
Página ix
... survey line and adopted course for main irrigation canal . 250 147 Drop in irrigation ditch . 251 148 Division box in irrigation ditch . 252 149 Simple head gate for irrigation ditch . 253 150 Head gate or turnout for regulating and ...
... survey line and adopted course for main irrigation canal . 250 147 Drop in irrigation ditch . 251 148 Division box in irrigation ditch . 252 149 Simple head gate for irrigation ditch . 253 150 Head gate or turnout for regulating and ...
Página 53
... surveys of many counties have been made , has classified the soils of the country under several hundred types , and expects to add still more types . This is an artificial classification made for convenience in mapping soils and in ...
... surveys of many counties have been made , has classified the soils of the country under several hundred types , and expects to add still more types . This is an artificial classification made for convenience in mapping soils and in ...
Página 54
... survey naturally come the fertilizer and crop rotation surveys , and the general farm management sur- vey for determining , by systematic field plot tests on each soil type , the fertilizers needed , also the kinds of rotation and ...
... survey naturally come the fertilizer and crop rotation surveys , and the general farm management sur- vey for determining , by systematic field plot tests on each soil type , the fertilizers needed , also the kinds of rotation and ...
Página 90
... surveys of the United States Department of Agriculture and of some state bureaus will be great aids in selecting the regions to investigate for good soils and desirable farms . Ability to withstand drouth . - Drouth resistance is an ...
... surveys of the United States Department of Agriculture and of some state bureaus will be great aids in selecting the regions to investigate for good soils and desirable farms . Ability to withstand drouth . - Drouth resistance is an ...
Página 93
... surveys have been made by the Bureau of Soils of the United States Department of Agriculture , or by a state department or experiment station , the soil maps showing the areas of soils of different classes will be found valuable aids in ...
... surveys have been made by the Bureau of Soils of the United States Department of Agriculture , or by a state department or experiment station , the soil maps showing the areas of soils of different classes will be found valuable aids in ...
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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