JUSTIFICATION OF PARAMETERS OF TECHNICAL MEAN FOR EDGE TREATMENT OF FIELD FROM OF WEEDS AND FIELD CROPS PESTS

The main method of spraying for plant protection in the fight against weeds and pests in the marginal area of the field with forest plantations is currently implemented by various technical means. The following shortcomings have been identified: when using the main chemical method of spraying weeds and pests by technical means, universal requirements for droplet dispersion are not met; when spraying the forest belt with fans - instability of aerosol jets in the external environment; when creating a cold aerosol with fans - uncontrollability for achieving the required dispersion, and when creating a cold aerosol with generators, the initial conditions of its formation are insufficient to justify the spread of dispersion as intended; when using aerosol generators with a thermo-mechanical principle of operation - non-compliance with modern environmental requirements. The recommendations for the use of air means given in literary sources are not relevant. The technical means including an axial fan with a diameter of 0.61 m and an air capacity of 22,000 m3 /h were studied. The conical nozzle was equipped with nozzles with spray tips on its generatrix. The working process of the axial fan with a hydraulic motor was provided by the tractor hydraulic system, and the supply of working fluid from the sprayer tank to the spray tips was carried out by a pump. Theoretical studies were conducted to justify the nozzle to the fan with the justification for creating an air-dispersed system and settling polydisperse droplets from it on the target objects. Experimental data on the dispersion of droplets were processed using software. The results of the studies represent the novelty of theoretical and practical solutions for the combined use of the process of spraying the edge area of the field with its further development in practical application for plant protection.