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 37
... preventing the ice sheet from flowing in that direction . The higher land at the foot of the Alleghanies also prevented the ice sheet from flowing over against those mountains . There were , also , other occasional higher portions of ...
... preventing the ice sheet from flowing in that direction . The higher land at the foot of the Alleghanies also prevented the ice sheet from flowing over against those mountains . There were , also , other occasional higher portions of ...
Página 49
... prevent the falls from further receding . E , retaining wall above the falls . K , the present city of Minneapolis . M , the group of great flouring mills . O , river below dam . Z , drift above the limestone . X , limestone . Y ...
... prevent the falls from further receding . E , retaining wall above the falls . K , the present city of Minneapolis . M , the group of great flouring mills . O , river below dam . Z , drift above the limestone . X , limestone . Y ...
Página 60
... Care must be taken to prevent peaty soil from being burned too deeply , since once the surplus water is drained out of peaty lands , they become dry and will burn if set on fire , so that great holes or pits are often 60 FARM DEVELOPMENT.
... Care must be taken to prevent peaty soil from being burned too deeply , since once the surplus water is drained out of peaty lands , they become dry and will burn if set on fire , so that great holes or pits are often 60 FARM DEVELOPMENT.
Página 71
... prevent the soil from be- coming too compact . By the freezing and the resultant expanding of the soil , the particles are pushed apart and left more open for the following summer season . Veg- etable manures make dense soils looser ...
... prevent the soil from be- coming too compact . By the freezing and the resultant expanding of the soil , the particles are pushed apart and left more open for the following summer season . Veg- etable manures make dense soils looser ...
Página 81
... will cling to , and prevent from running out of , its body much more water than will a sandy soil . In soils which are so constituted as to hold much water , plants can better endure either periods of THE SOIL AND SOIL FORMATION 81.
... will cling to , and prevent from running out of , its body much more water than will a sandy soil . In soils which are so constituted as to hold much water , plants can better endure either periods of THE SOIL AND SOIL FORMATION 81.
Otras ediciones - Ver todas
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