Applicator exposure to the insecticides deltamethrin, cypermethrin, imidacloprid and profenofos sprayed on crops of different canopy heights

Issue Date

9-2003

Abstract

Applicators' exposure patterns to the four insecticides sprayed varied widely and distinctly among tall trees (mango), trellised vegetables (bittergourd) and low-lying crops (pechay and watermelon). Residues on the face were highest for mango applicators reflective of the spraying regimen which was overhead. Residues, in general, were distributed over the whole body of bittergourd applicators indicating the need for them to wear a jacket. Applicators for low-lying crops require leg and feet protection due to contact with sprayed foliage. Wearing long pants of thick material, such as denim, and use of footwear reduced dermal exposure to pesticides. Hand exposure while mixing was generally much greater than the total body exposure during spraying, with residues accounting for 91% to 176% of the dermal tolerance level (D tol) per person per day. Dtol was not exceeded using a power sprayer for imidacloprid and cypermethrin application on mango, and for deltamethrin on bittergourd using a knapsack sprayer. Dtol for cypermethrin and deltamethrin was also not exceeded on low-lying crops but the Dtol for profenofos was exceeded.

Source or Periodical Title

Philippine Agricultural Scientist

ISSN

317454

Volume

86

Issue

3

Page

266-281

Document Type

Article

Subject

Bittergourd, Crucifer, Mango, Risk assessment, Watermelon, Worker exposure

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