Controlled release fertilizer

Details Controlled release fertilizer Controlled release fertilizer

1991-01-28

1992-08-11

Lander, Ferris

Chemistry: fertilizers

Processes and products

Forms or conditioning

71 6411, C05G 310

Patent

active

051375630

ABSTRACT:
A biologically controlled release coating for fertilizer comprises from 60 to 97 weight % of a waxy substance and from 40 to 3 weight % or a rosin or dimerized rosin having at least 70 weight % of resinic acids having conjugated double bonds and dimerized rosin with its derivatives thereof. Such coatings have a resin character to giver fertilizer prills which do not break on handling yet break down in response to the biological needs of the plant.

REFERENCES:
patent: 3252786 (1966-05-01), Bozzelli et al.

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