Staff View: Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples

Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples

BACKGROUND: Air blast sprayers are not optimized for spraying the short statured trees in modern apple orchards, resulting in off target drift and variable coverage. A solid set canopy delivery system (SSCDS) consisting of a microsprayer array distributed throughout the orchard was investigated as a...

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Main Authors:	Owen‐Smith, Paul, Perry, Ronald, Wise, John, Raja Jamil, Raja Zalinda, Gut, Larry, Sundin, George, Grieshop, Matthew
Format:	Article
Published:	Wiley 2019
Subjects:	S Agriculture (General)
Online Access:	http://eprints.um.edu.my/23775/ https://doi.org/10.1002/ps.5421
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spelling	my.um.eprints.237752020-02-13T02:27:09Z http://eprints.um.edu.my/23775/ Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples Owen‐Smith, Paul Perry, Ronald Wise, John Raja Jamil, Raja Zalinda Gut, Larry Sundin, George Grieshop, Matthew S Agriculture (General) BACKGROUND: Air blast sprayers are not optimized for spraying the short statured trees in modern apple orchards, resulting in off target drift and variable coverage. A solid set canopy delivery system (SSCDS) consisting of a microsprayer array distributed throughout the orchard was investigated as a replacement agrochemical application method in this study. SSCDS's have the potential to optimize coverage, rapidly spray applications, and remove the operator and tractor from the orchard. RESULTS: Air blast and SSCDS applications were compared using water sensitive paper, bioassays, and pest damage assessments. Pest management and coverage were compared using application volumes of 700 and 795 L ha−1, respectively. In 2013, adaxial coverage measurements showed no difference between the treatments, but air blast sprayers had higher coverage levels on the abaxial surfaces. There were no significant differences in coverage in 2014. Bioassays using Choristoneura rosaceana fed on leaf discs treated by the SSCDS displayed 95.8% mortality in 2013 and 94.2% mortality in 2014, and air blast treated larval mortality was 95% in 2013 and 100% in 2014. Damage evaluations in both years generally showed no significant differences between the air blast plots and the SSCDS plots, but significant differences between the treated plots and untreated control. CONCLUSIONS: The prototype SSCDS was an effective pest management tool in high density apples, and offered a number of advantages over an air blast. Further engineering and research into coverage optimization would offer producers a novel tool for foliar agrochemical applications. © 2019 Society of Chemical Industry. © 2019 Society of Chemical Industry Wiley 2019 Article PeerReviewed Owen‐Smith, Paul and Perry, Ronald and Wise, John and Raja Jamil, Raja Zalinda and Gut, Larry and Sundin, George and Grieshop, Matthew (2019) Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples. Pest Management Science, 75 (11). pp. 3050-3059. ISSN 1526-498X https://doi.org/10.1002/ps.5421 doi:10.1002/ps.5421
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	S Agriculture (General)
spellingShingle	S Agriculture (General) Owen‐Smith, Paul Perry, Ronald Wise, John Raja Jamil, Raja Zalinda Gut, Larry Sundin, George Grieshop, Matthew Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples
description	BACKGROUND: Air blast sprayers are not optimized for spraying the short statured trees in modern apple orchards, resulting in off target drift and variable coverage. A solid set canopy delivery system (SSCDS) consisting of a microsprayer array distributed throughout the orchard was investigated as a replacement agrochemical application method in this study. SSCDS's have the potential to optimize coverage, rapidly spray applications, and remove the operator and tractor from the orchard. RESULTS: Air blast and SSCDS applications were compared using water sensitive paper, bioassays, and pest damage assessments. Pest management and coverage were compared using application volumes of 700 and 795 L ha−1, respectively. In 2013, adaxial coverage measurements showed no difference between the treatments, but air blast sprayers had higher coverage levels on the abaxial surfaces. There were no significant differences in coverage in 2014. Bioassays using Choristoneura rosaceana fed on leaf discs treated by the SSCDS displayed 95.8% mortality in 2013 and 94.2% mortality in 2014, and air blast treated larval mortality was 95% in 2013 and 100% in 2014. Damage evaluations in both years generally showed no significant differences between the air blast plots and the SSCDS plots, but significant differences between the treated plots and untreated control. CONCLUSIONS: The prototype SSCDS was an effective pest management tool in high density apples, and offered a number of advantages over an air blast. Further engineering and research into coverage optimization would offer producers a novel tool for foliar agrochemical applications. © 2019 Society of Chemical Industry. © 2019 Society of Chemical Industry
format	Article
author	Owen‐Smith, Paul Perry, Ronald Wise, John Raja Jamil, Raja Zalinda Gut, Larry Sundin, George Grieshop, Matthew
author_facet	Owen‐Smith, Paul Perry, Ronald Wise, John Raja Jamil, Raja Zalinda Gut, Larry Sundin, George Grieshop, Matthew
author_sort	Owen‐Smith, Paul
title	Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples
title_short	Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples
title_full	Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples
title_fullStr	Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples
title_full_unstemmed	Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples
title_sort	spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples
publisher	Wiley
publishDate	2019
url	http://eprints.um.edu.my/23775/ https://doi.org/10.1002/ps.5421
_version_	1662755178190733312
score	13.211869

Spray coverage and pest management efficacy of a solid set canopy delivery system in high density apples

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