METHOD FOR OBTAINING AN ORGANOMINERAL FERTILIZER OF PROLONGED ACTION BASED ON COFFEE ROASTING WASTE - COFFEE HUSKS Russian patent published in 2023 - IPC C05F11/08 C05F17/20 

FIELD: agriculture.

SUBSTANCE: method for obtaining a natural organo-mineral fertilizer of prolonged action based on coffee production waste— coffee husks, consists in wetting coffee husks with a suspension of Chlorella vulgaris microalgae, adding and mixing with glauconite clay, feeding the resulting mixture with a twin-screw feeder to a press granulator to obtain granules with a diameter of 5 mm and 5 mm high. Granular natural organomineral fertilizer is packed in bags or soft containers. The ratio of components, % by weight: coffee husk is 40%, microalgae Chlorella vulgaris is 47.1%, glauconite clay is 12.9%.

EFFECT: replenishing the deficiency of the main elements of mineral nutrition of plants (nitrogen, phosphorus, potassium, carbon), as well as the activation of soil nitrogen-fixing microorganisms that contribute to the natural accumulation of bound forms of nitrogen in soil systems.

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