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United States Department of Agriculture

Agricultural Research Service


Location: Application Technology Research Unit

Title: Development of variable-rate precision spraying systems for tree crop production

item Zhu, Heping
item Chen, Yu -
item Lu, Hui -
item Shen, Yue -
item Jeon, Hong Young
item Gu, Jiabing -
item 0zkan, Erdal -
item Derksen, Richard
item Reding, Michael
item Ranger, Christopher
item Canas, Luis -
item Krause, Charles
item Locke, James
item Ernst, Stan -
item Zondag, Randy -
item Fulcher, Amy -
item Rosetta, Robin -

Submitted to: Workshop Proceedings
Publication Type: Proceedings
Publication Acceptance Date: August 20, 2013
Publication Date: September 10, 2013
Citation: Zhu, H., Chen, Y., Lu, H., Shen, Y., Jeon, H., Gu, J., 0zkan, E., Derksen, R.C., Reding, M.E., Ranger, C.M., Canas, L., Krause, C.R., Locke, J.C., Ernst, S., Zondag, R., Fulcher, A., Rosetta, R. 2013. Development of variable-rate precision spraying systems for tree crop production. Workshop Proceedings. 12th Workshop on Spray Application Techniques in Fruit Growing (Suprofruit 2013), June 26-28, 2013, Valencia, Spain. p. 123-125.

Technical Abstract: Excessive pesticides are often applied to target and non-target areas in orchards and nurseries, resulting in greater production costs, worker exposure to unnecessary pesticide risks, and adverse contamination of the environment. To improve spray application efficiency, two types of variable-rate precision sprayers were developed for tree crop applications. The first sprayer was a hydraulic vertical boom spraying system which was proposed to spray relatively small narrow trees such as liners, and the second sprayer was an air-assisted spraying system which was proposed to spray wide varieties of nursery and fruit tree crops. Field test results demonstrated that the newly developed sprayers have great potential to bring great reductions in pesticide use for tree crop productions. Compared to conventional constant-rate sprayers, the new variable-rate sprayers greatly reduced variations in spray deposition due to changes in tree growth, increased consistence of spray deposition uniformity inside canopies at different growth stages, minimized off-target losses, and reduced pesticide use.

Last Modified: 8/25/2016
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