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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Resultados 1-5 de 73
Página vi
... roots of corn plant nearly ready to tassel . Crown and stem roots of mature wheat plant .. Pot containing artificially dried soil . Pot of soil illustrating absorption of moisture . Pot of soil moistened by rain . 18 19 20 21 22 23 24 ...
... roots of corn plant nearly ready to tassel . Crown and stem roots of mature wheat plant .. Pot containing artificially dried soil . Pot of soil illustrating absorption of moisture . Pot of soil moistened by rain . 18 19 20 21 22 23 24 ...
Página vii
... root plow " Methods of hitching stump pullers . 120 122 48 Mud boat ... 128 49 Low or handy wagon . 128 50 Stone boat . 51 Peat hook .. 52 Burning surface peat in Germany . 53 Placing bog shoes on a horse .. 130 130 132 133 54 Breaking ...
... root plow " Methods of hitching stump pullers . 120 122 48 Mud boat ... 128 49 Low or handy wagon . 128 50 Stone boat . 51 Peat hook .. 52 Burning surface peat in Germany . 53 Placing bog shoes on a horse .. 130 130 132 133 54 Breaking ...
Página viii
... roots taken from drain tiles . 106 Filling tile ditch with drag or slush scraper . 107 Filling tile ditch with especially constructed scraper . 108 Filling tile ditch with a reversible road machine .. 109 Tile - ditching machine opening ...
... roots taken from drain tiles . 106 Filling tile ditch with drag or slush scraper . 107 Filling tile ditch with especially constructed scraper . 108 Filling tile ditch with a reversible road machine .. 109 Tile - ditching machine opening ...
Página 19
... green with a coloring matter termed chlorophyll . These chlorophyll bodies do not appear in plants that are kept in the dark . Seeds and roots that begin growth in the dark will grow only while the food material lasts which 19.
... green with a coloring matter termed chlorophyll . These chlorophyll bodies do not appear in plants that are kept in the dark . Seeds and roots that begin growth in the dark will grow only while the food material lasts which 19.
Página 20
... roots . 66 The work done by these chlorophyll bodies in the leaves , aided by the sunlight , is very important . The leaves of plants are very complex workshops , or labora- tories , and here the substances taken from the soil and air ...
... roots . 66 The work done by these chlorophyll bodies in the leaves , aided by the sunlight , is very important . The leaves of plants are very complex workshops , or labora- tories , and here the substances taken from the soil and air ...
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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 amount of water animals better biped bottom brace building canal capillary capillary action capstan carry cement cents clay 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 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 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