Spray deposition on plant surfaces: a modelling approach

Functional Plant Biology : FPB
Gary DorrBarry Noller

Abstract

For pesticides to effectively manage pests, they must first be deposited on the target (typically a plant surface) in a manner in which the active ingredient(s) can be readily taken up by the target organism. A plant architectural model that enables the location of various plant components in 3-D space combined with a particle trajectory model has been used to study the interception of spray droplets by various vegetative elements. Results from the simulation are compared with wind tunnel studies of glyphosate deposition on cotton (Gossypium hirsutum L. var. Sicala), sow thistle (Sonchus oleraceus L.) and wild oats (Avena ludoviciana Durieu). An air induction flat fan nozzle (AI110015 at 500 kPa pressure) and an extended range flat fan nozzle (XR11002 at 280 kPa pressure) were predicted to have similar glyphosate deposition on cotton and sow thistle plants, whereas the extended range nozzle resulted in higher deposit on wild oats. Spray deposition (µg cm-2) on wild oat plants at the 5-leaf stage was more than double the amount of deposition on sow thistle or wild oat plants at the 2-leaf stage. The model was in good agreement with the experimental data except that it tended to over predict deposition on sow thistle plants.

Citations

Oct 17, 2009·Pest Management Science·Pascal BraekmanDavid Nuyttens
Oct 30, 2010·Pest Management Science·Dieter Foqué, David Nuyttens
Aug 27, 2019·Frontiers in Plant Science·Mariem AbichouBruno Andrieu
Aug 19, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Stephan V Roth
May 1, 2015·Functional Plant Biology : FPB·Daryl M KempthorneJerzy A Zabkiewicz
Jan 14, 2020·Pest Management Science·Jerzy A ZabkiewiczScott W McCue
Dec 10, 2009·Journal of Experimental Botany·J VosP H B de Visser

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