METHOD FOR PRODUCING FERTILIZER OF PROLONGED ACTION Russian patent published in 1999 - IPC

FIELD: agricultural industry. SUBSTANCE: prolonged-action mineral fertilizer is especially effective for agricultural plants with long period of vegetation and for subsequent plants in rotation of crops. According to method, mineral fertilizer is mixed with ion exchanger. Used in function of ion exchanger is zeolite-containing rock of sedimentary origin. Mineral fertilizer is used in various proportions and combinations and incorporates major components. Proportioning of ionite and mineral fertilizer is as follows 5-600: 1. Combination fertilizer produced by aforesaid method possesses increased exchanging capacity, larger number of useful components and phenomenon of prolonged action. EFFECT: higher efficiency. 4 ex