APPARATUS AND METHOD FOR DIFFERENTIATED APPLICATION OF LIQUID MINERAL FERTILIZERS Russian patent published in 2008 - IPC A01C23/00 

FIELD: mechanized agriculture, in particular, application of liquid chemicals into soil.

SUBSTANCE: apparatus has working devices uniformly distributed along wide bar and formed as individual cylindrical liquid fertilizer components dispensers with pistons freely movable therein. Measuring cavities of pistons are communicated with suction inlets of injection-type spraying nozzles. Each of said dispensers is equipped with individual dose regulator connected to controlling computer. Method involves preliminarily forming predetermined doses of agricultural chemical components separately for each elementary field plot by means of local dispensers of working devices; applying said doses by generating individual pulses of fertilizer flow rate and simultaneously mixing said doses by generating compressed air flow rate pulses, said compressed air being adapted for spraying of fertilizer mixture onto elementary plots.

EFFECT: simplified construction of apparatus and differentiated application of fertilizer by providing predetermined dose of component mixture for each elementary field plot.

3 cl, 3 dwg