Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1975-01-23
1976-10-26
Hart, Charles N.
Chemistry: fertilizers
Processes and products
Inorganic material
71 64SC, C05D 302
Patent
active
039881415
ABSTRACT:
Finely divided coral fossil limestone is mixed with paddy field soil and upland soil to improve soils, whereby a 40% increase is achieved in the yields of crops such as lowland rice, spinach and turnips. Even when excessively added to soil, coral fossil limestone produces no adverse effect unlike conventional fertilizers and soil improving agents but maintains soil pH at a substantially neutral value. Because of its excellent properties as a soil improving agent, coral fossil limestone finds a novel application in improving soils to give increased crops.
REFERENCES:
patent: 1747281 (1927-06-01), Baker
patent: 2258709 (1941-10-01), Mac Intire
patent: 2817582 (1957-12-01), Chaney
patent: 3214261 (1965-10-01), Galloway
patent: 3890225 (1975-06-01), Kajiyama
Chem. Abstracts vol. 30:1698.
Hart Charles N.
Therkorn Ernest G.
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