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 32
... mixed with fine particles of earth , helped make a productive soil . In many places the rains washed these plant and animal remains into streams , and , together with par- ticles of soil , they were deposited along the river beds or ...
... mixed with fine particles of earth , helped make a productive soil . In many places the rains washed these plant and animal remains into streams , and , together with par- ticles of soil , they were deposited along the river beds or ...
Página 35
... mixing of soils . In moist , low places vegetation has grown and been preserved by water cov- ering it , and thus collected into beds of peat . Peat beds thus made in former times , and afterward covered with clay , in some cases have ...
... mixing of soils . In moist , low places vegetation has grown and been preserved by water cov- ering it , and thus collected into beds of peat . Peat beds thus made in former times , and afterward covered with clay , in some cases have ...
Página 36
... 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 had been its custom before , or as it does at present , and the climate became ...
... 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 had been its custom before , or as it does at present , and the climate became ...
Página 39
... mixed , but in many places the water flowing from the melting glacier washed the drift about , often making great valleys through which the streams could run . The material which was thus washed about by the water , was usually left ...
... mixed , but in many places the water flowing from the melting glacier washed the drift about , often making great valleys through which the streams could run . The material which was thus washed about by the water , was usually left ...
Página 40
... mixing to- gether clay , sand and particles of all kinds of rocks , thus making soils wonderfully adapted to the growth of useful plants . These soils of mixed materials furnish ideal mechanical conditions for the roots of plants ...
... mixing to- gether clay , sand and particles of all kinds of rocks , thus making soils wonderfully adapted to the growth of useful plants . These soils of mixed materials furnish ideal mechanical conditions for the roots of plants ...
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Farm Development; An Introductory Book in Agriculture, Including a ... W. M. Hays Sin vista previa disponible - 2017 |
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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