Estimating drift of airborne pesticides during orchard spraying using active Open Path FTIR

Oz Kira, Raphael Linker, Yael Dubowski

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The use of pesticides is important to ensure food security around the world. Unfortunately, exposure to pesticides is harmful to human health and the environment. This study suggests using active Open Path Fourier Transform Infra-Red (OP-FTIR) spectroscopy for monitoring and characterizing pesticide spray drift, which is one of the transfer mechanisms that lead to inhalation exposure to pesticides. Experiments were conducted in a research farm with two fungicides (Impulse and Bogiron), which were sprayed in the recommended concentration of ∼0.1%w in water, using a tractor-mounted air-assisted sprayer. The ability to detect and characterize the pesticide spray drift was tested in three types of environments: fallow field, young orchard, and mature orchard. During all spraying experiments the spectral signature of the organic phase of the pesticide solution was identified. Additionally, after estimating the droplets' size distribution using water sensitive papers, the OP-FTIR measurements enabled the estimation of the droplets load in the line of sight.

Original languageEnglish GB
Pages (from-to)264-270
Number of pages7
JournalAtmospheric Environment
Volume142
DOIs
StatePublished - 1 Oct 2016
Externally publishedYes

Keywords

  • Aerosols
  • OP-FTIR
  • Pesticide drift
  • Remote sensing
  • Thermal infrared

ASJC Scopus subject areas

  • General Environmental Science
  • Atmospheric Science

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