METHOD OF PRODUCTION OF LIQUID HUMIC FERTILISER Russian patent published in 2014 - IPC C05F3/00 C05F11/02 

FIELD: agriculture.

SUBSTANCE: method of production of liquid humic fertiliser comprises mixing the humic-containing material with 1.5-2.0% aqueous potassium hydroxide solution, suspension sedimentation and separation of the liquid fraction, at that stirring of the humic-containing material with 1.5-2.0% aqueous potassium hydroxide solution and the suspension sedimentation is carried out repeatedly, the humic-containing material is used as waste of production of the liquid phase bioagent for crop production and farming, which active ingredient is organic matter carbon C_org - 30.0-40.0, wt %, comprising macronutrients: nitrogen N_tot. - 1.15-1.80, wt %; phosphorus P₂O₅ - 1.4-2.2, wt %; potassium K₂O - 1.0-2.3, wt %; calcium CaO - 1.1-1.6, wt %; magnesium MgO - 0.2-0.8, wt %, and trace elements, at least, boron, copper, cobalt, manganese, selenium, silicon, and mixing the humic-containing material with 1.5-2.0% aqueous potassium hydroxide solution is carried out three times, each in a ratio of 1:10 at the speed of 20 rev/min, at a temperature of 60°C for at least 1 hour, and sedimentation - after each mixing at a temperature of 60°C for 2 hours, followed by separation and combining the supernatant.

EFFECT: invention enables to expand the range of liquid humic fertilisers, to improve plant growth and development, to activate soil-microbiological processes.

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