LIQUID COMPLEX FERTILIZER AND A METHOD FOR MANUFACTURE THEREOF Russian patent published in 2006 - IPC C05F11/02 

FIELD: fertilizers.

SUBSTANCE: invention relates to wasteless manufacture of environmentally pure agriculture-destined liquid complex fertilizers based on pit containing humin acids, macroelements, and trace elements improving growth and evolution of plants and additional fertilizing of various agricultural crops. Liquid complex fertilizer is composed of liquid humin fertilizer mixed with water-soluble complex mineral fertilizer, the former containing at least 2.6 g/L humin acids and the latter, referred to as Akvarin-13, contained in mixture in percentage below 0.1%. Liquid humin fertilizer is prepared by treating humified material with potassium hydroxide solution, settling, stirring resulting suspension, separating liquid fraction and adding nutritive mineral elements to liquid humin fertilizer. According to invention, treatment of humified material with alkali solution is effected at ratio 1:(13-16).

EFFECT: facilitated use if fertilizer, increased agrochemical efficiency thereof, and manufacture expenses.

7 cl, 3 tbl