Abstract
Research was carried out concerning spraying young cherry trees with a multirotor drone: a hexacopter. The aim of the study was to evaluate the impact of the following: the nozzle type, the air stream from the drone rotors and the size of spacing between the trees on the distribution of the liquid sprayed in the crown of the trees being sprayed. Experimental trials were conducted on a laboratory test stand. Air-injector spray nozzles: single and a twin flat were used interchangeably to spray the liquid. The travelling speed of the drone was 1.0 m∙s−1. A drone of 106.7 N weight was accepted in the study. The value of the spray liquid deposited and the uniformity of the liquid deposition in the crowns of the trees as well as the transverse distribution of the liquid under the nozzles were evaluated. It was found that the air stream from the drone rotors increased the distribution of the liquid on the trees sprayed, mainly at the middle and lower levels of the crown. A higher deposition value of the liquid was sprayed from the twin flat nozzle than from the single flat nozzle. There was no significant effect of the difference in the distance between the trees, of 0.5 and 1.0 m, on the liquid distribution. Under the influence of the air jet, the uniformity of the liquid distribution in the crowns of the trees also improved.
Highlights
IntroductionPublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
The aim of the study was an attempt to assess the influence on the quality of spray distribution in the tree crown of such factors as: the type of nozzle mounted on the multirotor drone, the air flow originating from the drone rotors and the spacing of trees in the row
The results of the analysis indicate a significant and positive effect and,ofofthe theair airstream streamcoming coming from rotations of the rotors, on uniformity the uniformity of and, from thethe rotations of the rotors, on the of the the distribution ofliquid the liquid thecrowns tree crowns spraying with theflat twin flat distribution of the flow flow in theintree when when spraying with the twin spray spray nozzle
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Plant pest management systems are being enriched using a new technical solution: unmanned aerial vehicles (UAVs) commonly known as drones. Drones can be used in precision agriculture for the purpose of inspection raids to assess plant health and development, as well as fertilizer requirements [1,2,3]. Inspection raids in agriculture can be performed to assess the condition of agricultural land and to classify it [4]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
