Draining for Profit: And Draining for HealthOrange Judd Company, 1890 - 252 páginas |
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Resultados 1-5 de 42
Página 10
... amount of clay , will withstand even a severe drought , without great injury to its crop , if it is thoroughly drained , and is kept loose at its surface . Poor crops are , when the cultivation of the soil is rea- sonably good , caused ...
... amount of clay , will withstand even a severe drought , without great injury to its crop , if it is thoroughly drained , and is kept loose at its surface . Poor crops are , when the cultivation of the soil is rea- sonably good , caused ...
Página 14
... amount of this necessary substance ; and , owing " to this , germination does take place , although by no 66 means under such advantageous circumstances as it would 66 were the soil in a better condition . 66 " We pass on now to Fig . 3 ...
... amount of this necessary substance ; and , owing " to this , germination does take place , although by no 66 means under such advantageous circumstances as it would 66 were the soil in a better condition . 66 " We pass on now to Fig . 3 ...
Página 25
... amount of moisture , are made unduly wet ; and the spaces between them , being filled with water , no air can enter , whereby the various processes by which the inert minerals , and the roots and manure , in the soil are prepared for ...
... amount of moisture , are made unduly wet ; and the spaces between them , being filled with water , no air can enter , whereby the various processes by which the inert minerals , and the roots and manure , in the soil are prepared for ...
Página 27
... amount of the free water in the soil which is evaporated from the surface , and in propor- tion to the trampling of the ground , when very wet . It is greatly facilitated by frost , and especially by deep frost . The fissures which are ...
... amount of the free water in the soil which is evaporated from the surface , and in propor- tion to the trampling of the ground , when very wet . It is greatly facilitated by frost , and especially by deep frost . The fissures which are ...
Página 32
... amount required to moisten a dry soil , four feet deep , giving no excess to be drained away , would amount to a rain fall of from 20 to 30 inches in depth . If we consider , in addition to this , the amount of water drained away , we ...
... amount required to moisten a dry soil , four feet deep , giving no excess to be drained away , would amount to a rain fall of from 20 to 30 inches in depth . If we consider , in addition to this , the amount of water drained away , we ...
Otras ediciones - Ver todas
Draining for Profit, and Draining for Health George E 1833-1898 Waring Sin vista previa disponible - 2015 |
Términos y frases comunes
acre agricultural allow basin bottom brick bushels carried cause cents clay collars commenced condition connection considerable contour lines cost course covered crop cultivation deposit depth discharge diseases distance ditch drainage dyke earth effect Ensilage evaporation fall Farm farmer feet deep fever field fifth column filled flow foot four feet Gisborne grade ground Hackensack River heat heavy rain houses improvement inches joints kiln labor laid land lateral drains laying length less lower main drain malarious manure marsh matters moisture muddy water nearly necessary obstruction operation outlet particles pipes placed plants plow porous practice prevent quantity rain-fall removed result retentive roots salt marsh saturated season sewage sewers shown in Fig side silt silt-basin slope soakage soil spring stakes steepest descent stone subsoil sufficient surface tide tile tile-draining tion typhoid fever undrained upper end whole width