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COMMERCIAL SOURCES OF PLANT-FOOD

Acid Phosphate
Acquaintance With Terms
Animal Bone
Basic Slag
Coal-ashes
Dried Blood
Fish
Kainit
Muck
Muriate Of Potash
Nitrate Of Soda
Other Fertilizers
Raw Bone
Rock-phosphate
Salt

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Raw Bone








Stable manure lasts several years in the soil because decay
is slow. Raw bone has appealed to many because its action is likewise
necessarily slow. The fat in it prevents fine grinding and protects the
coarse particles from decay. It is known as bone-meal or coarse
ground-bone. A good quality of raw bone may contain 4 per cent of
nitrogen, while the phosphoric-acid content is 20 to 25 per cent. The
bones of old animals is less rich in nitrogen. The age of the animals,
and the sorting for manufactures of various kinds, cause variation in
quality, and the purchase of raw bone should be made on guaranteed
analysis just as surely as the purchase of bone that has been treated
in any way for removal of various substances in it.





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