METHOD OF PRODUCING LIQUID HUMIC FERTILIZER Russian patent published in 2019 - IPC C05F3/00 C05F11/02 C05G3/00 

FIELD: agriculture.

SUBSTANCE: method of producing liquid humic fertilizer involves stirring repeatedly the humic-containing material, which is a waste of production of a liquid-phase biological agent for plant growing and farming, obtained by fermentation during 5 days of a peat-and-worm mixture at a component ratio of 50:50 with addition of wood ash in amount of 3 wt. % with subsequent extraction of 1 % potassium phosphate solid-phase fermentation product and filtration of extracted mass, as a result of which precipitate is obtained, with 1.5–2.0 % aqueous solution of potassium hydroxide, settling suspension and separating and combining liquid fraction, wherein first time humic-containing material is mixed with preheated to 60 °C 1.5–2.0 % aqueous solution of potassium hydroxide in ratio 1:5 by weight of dry substance at rate of 20 rpm, second time mixing obtained after first mixing suspension with preheated to 60 °C 1.5–2.0 % aqueous solution of caustic potassium taken in initial volume, and third time – sediment after supernatant separation after second mixing.

EFFECT: invention enables to obtain effective liquid humic fertilizer.

1 cl, 1 dwg, 6 tbl, 2 ex