Aerosol technology for edge treatment of a field for the destruction of weeds and pests

Abstract

BACKGROUND: The subject of the study is the technological process of spraying weeds and pests in the edge area of the field with polydisperse drops from an air-dispersed system created by a fan with a nozzle and slotted liquid sprayers.
 AIMS: Justification of the technological process of spraying weeds and pests during the edge treatment of a field with a polydisperse aerosol.
 METHODS: There was a device for a mounted boom sprayer of plants used for edge treatment of a field by the main method of spraying weeds and pests with the required size and number of drops from an air-dispersed jet created by an axial fan with a hydraulic drive and a nozzle equipped with slotted sprayers of liquid located along its generatrix for supplying spray cones into the initial section of the jet. Based on the developed method, the results of tinted liquid spraying subject cards fixed in a certain position in compliance with the GOST 34630 on tablets and located perpendicular to the motion direction of the sprayer on soil and hills.
 RESEARCH NOVELTY: The aerosol technology for edge treatment of a field for the destruction of weeds and pests was proposed for the first time.
 RESULTS: Using eight LU-015. AD-015 (color code - green) slotted sprayers on the nozzle generatrix of the device, the number of drops deposited per 1 cm2 on the surface at a distance from the nozzle up to 15 m satisfies the agrotechnical requirements for the use of herbicides, as well as insecticides and fungicides. Throughout the height of the cards at a distance of 10 m from the nozzle, the number of drops per 1 cm2 decreases, and especially with an increase in the height of their location. Large drops of the polydisperse system settle on the soil earlier to kill weeds, while small ones move to the forest belt to kill pests at the base.
 CONCLUSIONS: With theoretical calculations and experimentally, the aerosol technology of combined edge treatment of a field and field-protective plantings with the environmentally friendly cold aerosol using slotted liquid sprayers was justificated. The performance of rational technology is ensured by: the technical unit motion velocity of 3 km/h, the spraying width of 10 m, the working fluid pressure of 4 bar, the productivity of 3 ha/h, the working solution flow rate of 108.8 l/ha.