METHOD FOR SIMULTANEOUS DIFFERENTIATED APPLICATION OF LIQUID MINERAL FERTILIZERS AND HERBICIDES AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC A01C21/00 A01C23/02 

FIELD: agriculture.

SUBSTANCE: group of inventions relates to agriculture and can be used in automated systems for simultaneous differentiated application of liquid mineral fertilizers and herbicides. The method consists in obtaining information about the physical properties of plants and the chemical composition of the soil in an agricultural field by periodically sampling soil, crop plants and weeds on test sites located next to the field with the same cultivated crop. The state of the agrocenosis biomass parameters is evaluated on test sites, across the entire field area and on each small fragment of the field along the working width of the device according to remote sensing data and mathematical models, which are expanded by including the parameters of the state of weeds in them. Optimal programs for simultaneous application of liquid mineral fertilizers and herbicides are formed, which are adjusted in real time, taking into account estimates of the parameters of the state of agrocenosis on average over the field area and on each small fragment of the field at the time of the onset of the selected phenological phases of the cultivated crop. The device includes a container for liquid mineral fertilizers, a distribution pipeline with working bodies installed on it in the form of controlled fertilizer dispensers, as well as a hydraulic system controlled from a common control device. The device is additionally equipped with a tank, a pump and a distribution pipeline for liquid herbicides with sprayers installed on it with shut-off valves, the number of which is equal to the number of working bodies for applying liquid fertilizers, as well as a two-channel executive regulator. The general control device contains a block for estimating the average area of the field of parameters of the state of agrocenosis, a block for evaluating these parameters on each small fragment of the field, a block for forming programs for the average field parameters of technological operations, a block for forming optimal average field programs for changing the parameters of the state of agrocenosis and a block for forming corrections to the average optimal values of parameters of technological operations for each small a fragment of the field.

EFFECT: increase in the yield of the cultivated crop as part of the agrocenosis due to the formation and simultaneous implementation of technological operations for the introduction of mineral fertilizers and herbicides, as well as taking into account their simultaneous effect on the plants of the cultivated crop and weeds.

2 cl, 5 dwg