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Influence of spray application technique on spray deposition in greenhouse ivy pot plants grown on hanging shelves

Pascal Braekman, Dieter Foqué UGent, Marie-Christine Van Labeke UGent, Jan Pieters UGent and David Nuyttens (2009) HORTSCIENCE. 44(7). p.1921-1927
abstract
As a result of the decreasing availability of authorized plant protection products, adequate pest control becomes more difficult in many ornamental crops and almost no information is available about the optimization of spray application techniques in ornamental crops. Yet, spray boom systems-instead of the still predominantly used spray guns-might improve crop protection management in greenhouses considerably. Application rate, nozzle type, and configuration will influence the spray deposition and, as such, its efficiency. In this study, spray deposition in ivy pot plants [Hedera algeriensis cv. Montgomery, Hibb.], grown on hanging shelves in greenhouses, was compared with a traditional spray gun with a disc-core nozzle and a manually pulled trolley equipped with two vertical spray booms. The sprayings with the spray gun were performed at an application rate of 8500 L.ha(-1). For the vertical spray boom system, two different reduced application rates (2500 and 5000 L.ha(-1)) with five different combinations of nozzle type, size, and pressure for each application rate were investigated. This research underlined that, besides the application rate, also the spray application equipment used has an important effect on the spray depositions. Nozzle type, size, and pressure on the vertical spray boom system only had a minor effect on the spray deposition. Although the spray gun performed well on the easily accessible crop zone with the runners, its performance in the more dense main crop zone was inferior. With 240% more sprayed liquid (8500 L.ha(-1)) and chemicals, the realized depositions in this crop zone were not significantly different from the ones obtained with the vertical spray boom system applying only 2500 L.ha(-1). Spraying at 5000 L.ha(-1), the vertical spray boom system achieved a 82.9% higher overall spray deposition in the main crop canopy zone compared with the spray gun at an application rate of 8500 L.ha(-1). For the sprays applied with the vertical spray boom system, doubling the application rate resulted in equally higher spray depositions, except for the inner canopy deposition for which higher application rates were more effective.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
spray nozzle, plant protection, Hedera algeriensis cv. Montgomery, DROPLET SIZE, VOLUME, LOSSES, FIELD, COVERAGE, PRODUCTS, EFFICACY, spray gun, application rate, vertical spray boom, FAN ORCHARD SPRAYER, SIZED APPLE-TREES, FLOW-RATE
journal title
HORTSCIENCE
Hortscience
volume
44
issue
7
pages
1921 - 1927
Web of Science type
Article
Web of Science id
000272751600020
JCR category
HORTICULTURE
JCR impact factor
0.696 (2009)
JCR rank
15/30 (2009)
JCR quartile
3 (2009)
ISSN
0018-5345
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
749569
handle
http://hdl.handle.net/1854/LU-749569
alternative location
http://hortsci.ashspublications.org/content/44/7/1921.abstract
date created
2009-09-17 09:38:53
date last changed
2012-10-31 13:00:11
@article{749569,
  abstract     = {As a result of the decreasing availability of authorized plant protection products, adequate pest control becomes more difficult in many ornamental crops and almost no information is available about the optimization of spray application techniques in ornamental crops. Yet, spray boom systems-instead of the still predominantly used spray guns-might improve crop protection management in greenhouses considerably. Application rate, nozzle type, and configuration will influence the spray deposition and, as such, its efficiency. In this study, spray deposition in ivy pot plants [Hedera algeriensis cv. Montgomery, Hibb.], grown on hanging shelves in greenhouses, was compared with a traditional spray gun with a disc-core nozzle and a manually pulled trolley equipped with two vertical spray booms. The sprayings with the spray gun were performed at an application rate of 8500 L.ha(-1). For the vertical spray boom system, two different reduced application rates (2500 and 5000 L.ha(-1)) with five different combinations of nozzle type, size, and pressure for each application rate were investigated. This research underlined that, besides the application rate, also the spray application equipment used has an important effect on the spray depositions. Nozzle type, size, and pressure on the vertical spray boom system only had a minor effect on the spray deposition. Although the spray gun performed well on the easily accessible crop zone with the runners, its performance in the more dense main crop zone was inferior. With 240\% more sprayed liquid (8500 L.ha(-1)) and chemicals, the realized depositions in this crop zone were not significantly different from the ones obtained with the vertical spray boom system applying only 2500 L.ha(-1). Spraying at 5000 L.ha(-1), the vertical spray boom system achieved a 82.9\% higher overall spray deposition in the main crop canopy zone compared with the spray gun at an application rate of 8500 L.ha(-1). For the sprays applied with the vertical spray boom system, doubling the application rate resulted in equally higher spray depositions, except for the inner canopy deposition for which higher application rates were more effective.},
  author       = {Braekman, Pascal and Foqu{\'e}, Dieter and Van Labeke, Marie-Christine and Pieters, Jan and Nuyttens, David},
  issn         = {0018-5345},
  journal      = {HORTSCIENCE},
  keyword      = {spray nozzle,plant protection,Hedera algeriensis cv. Montgomery,DROPLET SIZE,VOLUME,LOSSES,FIELD,COVERAGE,PRODUCTS,EFFICACY,spray gun,application rate,vertical spray boom,FAN ORCHARD SPRAYER,SIZED APPLE-TREES,FLOW-RATE},
  language     = {eng},
  number       = {7},
  pages        = {1921--1927},
  title        = {Influence of spray application technique on spray deposition in greenhouse ivy pot plants grown on hanging shelves},
  url          = {http://hortsci.ashspublications.org/content/44/7/1921.abstract},
  volume       = {44},
  year         = {2009},
}

Chicago
Braekman, Pascal, Dieter Foqué, Marie-Christine Van Labeke, Jan Pieters, and David Nuyttens. 2009. “Influence of Spray Application Technique on Spray Deposition in Greenhouse Ivy Pot Plants Grown on Hanging Shelves.” Hortscience 44 (7): 1921–1927.
APA
Braekman, P., Foqué, D., Van Labeke, M.-C., Pieters, J., & Nuyttens, D. (2009). Influence of spray application technique on spray deposition in greenhouse ivy pot plants grown on hanging shelves. HORTSCIENCE, 44(7), 1921–1927.
Vancouver
1.
Braekman P, Foqué D, Van Labeke M-C, Pieters J, Nuyttens D. Influence of spray application technique on spray deposition in greenhouse ivy pot plants grown on hanging shelves. HORTSCIENCE. 2009;44(7):1921–7.
MLA
Braekman, Pascal, Dieter Foqué, Marie-Christine Van Labeke, et al. “Influence of Spray Application Technique on Spray Deposition in Greenhouse Ivy Pot Plants Grown on Hanging Shelves.” HORTSCIENCE 44.7 (2009): 1921–1927. Print.