ORGANOMINERAL FERTILISER MANUFACTURE TECHNIQUE Russian patent published in 2009 - IPC C05F11/02 

FIELD: agriculture.

SUBSTANCE: proposed technique is based on cavitational dispersion of humate-containing substances with subsequent additional introduction of microelements and consists in preparation of a mixture consisting of an alcali liquor with pH no less than 12 and a humate-containing substance followed by cavitational dispersion by way of exposure to ultrasonic radiation during 5-15 minutes, the specific wattage consumption being 1-4 W per 1 cm³ of the mixture treatment zone. After that phosphoric acid is added to the mixture in an amount sufficient for the pH decrease to the level of 2-1 and the mixture is again exposed to ultrasonic radiation, the treatment duration and intensity being as specified above. The resultant solution is mixed with alkali in an amount sufficient for the solution neutralisation to the pH level of 7-7.5; after that micronutrient elements are admixed to the liquid humane fertiliser.

EFFECT: manufacture of a high quality organomineral compound fertiliser characterised by extended period of activity and reliable application properties.

8 cl, 2 ex