METHOD OF TREATMENT OF STEAM FIELD Russian patent published in 2012 - IPC A01B79/02 A01G1/00 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. The method includes mechanical handling and application of herbicides. In the first half of the steam period pinned and non-pinned mechanical handling is carried out, and in the second period nonselective herbicide such as Roundup are applied, the rate of which increases with the rise of the vegetative mass of weeds. Regulation of nitrogen application is carried out based on the level of applied herbicide dose increase and from its optimal number, where calculated amount for the planned harvest determined by the formula Nf=Ni*C is taken as initial rate of nitrogen where Nf is factual nitrogen application rate, kg / ha, Ni - initial nitrogen application rate, kg / ha B - crop removal of nutrients, kg / ha P - supply of nutrients in the soil, kg / ha, Kn is use of nutrients from the soil, % Cn is current nitrification, %, Np is previous rate of fertiliser, kg / ha, the Kaf - the aftereffect of fertilisers,%; Kf is the use of nutrients from fertiliser,% C - correction factor, units.

EFFECT: way to reduce energy costs for processing steam field, destroy weeds and to optimise nitrogen application for crop.