 Furthermore, the mineral elements are relatively cheap, while the nitrogen is relatively expensive, and thus that the economical use of this expensive element, nitrogen, is dependent to a large degree upon the abundance of the mineral elements In the...  First Principles of Soil Fertility - Página 221por Alfred Vivian - 1908 - 265 páginasVista completa - Acerca de este libro
 | Edward Burnett Voorhees - 1898 - 372 páginas
...the mineral elements are relatively cheap, while the nitrogen is relatively expensive, and thus that the economical use of this expensive element, nitrogen,...the nitrogen be applied in active forms, as nitrate or ammonia, and in such quantities and at MINEItAL SUPPLIES ADVANTAGEOUS 185 such times as will insure... | |
 | 1908 - 1062 páginas
...mineral elements are relatively cheap, while the nitrogen is relatively expensive, and thus that [sic| the economical use of this expensive element, nitrogen,...a reasonable excess of phosphoric acid and potash be applied, sufficient lo more than satisfy the maximum needs of any crop, and that the nitrogen be... | |
 | United States. National Conservation Commission - 1909 - 862 páginas
...the mineral elements are relatively cheap, while the nitrogen is relatively expensive, and thus that the economical use of this expensive element, nitrogen,...a reasonable excess of phosphoric acid and potash bo applied, sufficient to more than satisfy the maximum needs of any crop, and that the nitrogen be... | |
 | United States. National Conservation Commission - 1909 - 870 páginas
...the mineral elements are relatively cheap, while the nitrogen is relatively expensive, and thus that the economical use of this expensive element, nitrogen,...a reasonable excess of phosphoric acid and potash be applied, sufficient to more than satisfy the maximum needs of any crop, and that the nitrogen be... | |
 | Frederick Irving Anderson - 1913 - 336 páginas
...Furthermore, the mineral elements are relatively cheap, while the nitrogen is relatively expensive, and thus the economical use of this expensive element, nitrogen,...a reasonable excess of phosphoric acid and potash be applied, sufficient to more than satisfy the maximum needs of any crop, and that the nitrogen be... | |
 | 1910 - 48 páginas
...mineral elements are relatively cheap, while the nitrogen is relatively expensive, and thus that [sic] the economical use of this expensive element, nitrogen,...good state of cultivation, a reasonable excess of phospnoric acid and potash be applied, sufficient to more than satisfy the maximum needs of any crop,... | |
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