Soils And Fertilizers
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Natural phosphates, when in organic compounds, like bone, are more readily available than when in purely inorganic compounds, like rock.
220. Bone phosphate. — Most of the bone now used in fertilizers has been steamed or boiled, which removes the fat, and also the nitrogen that fresh bones contain. Fresh bones have a content of about 22 percent phosphoric acid and 4 percent nitrogen. Steamed bones have from 28 to 30 per- cent phosphoric acid and 1.5 percent nitrogen. Bone tankage, which has alr...eady been spoken of as a, nitrogenous fertilizer, contains from 7 to 9 percent of phosphoric acid. Bone should always be finely ground, as it is then more readily available.
It is a slow acting form of phosphoric acid.
221. Mineral phosphates. — These are found as natural deposits of rock in various parts of the world, some of the 171 172 SOILS AND FERTILIZERS most extensive being in the ITnited States. ^Vhen ground these are often called " floats." South Carolina phosphate contains from 26 to 28 percent of phosphoric acid.
What to read after Soils And Fertilizers?
You can find similar books in the "Read Also" column, or choose other free books by Lyon, Thomas Lyttleton, 1869- [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Natural phosphates, when in organic compounds, like bone, are more readily available than when in purely inorganic compounds, like rock.
220. Bone phosphate. — Most of the bone now used in fertilizers has been steamed or boiled, which removes the fat, and also the nitrogen that fresh bones contain. Fresh bones have a content of about 22 percent phosphoric acid and 4 percent nitrogen. Steamed bones have from 28 to 30 per- cent phosphoric acid and 1.5 percent nitrogen. Bone tankage, which has alr...eady been spoken of as a, nitrogenous fertilizer, contains from 7 to 9 percent of phosphoric acid. Bone should always be finely ground, as it is then more readily available.
It is a slow acting form of phosphoric acid.
221. Mineral phosphates. — These are found as natural deposits of rock in various parts of the world, some of the 171 172 SOILS AND FERTILIZERS most extensive being in the ITnited States. ^Vhen ground these are often called " floats." South Carolina phosphate contains from 26 to 28 percent of phosphoric acid.
What to read after Soils And Fertilizers?
You can find similar books in the "Read Also" column, or choose other free books by Lyon, Thomas Lyttleton, 1869- [from Old Catalog] to read onlineMoreLess
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