Impact of nC24 horticultural mineral oil deposits on oviposition by greenhouse whitefly Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae)

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Abstract

The impact of nC24 horticultural mineral oil deposits on oviposition by greenhouse whitefly on tomato leaves was determined in laboratory choice and no-choice tests. The deposits significantly suppressed oviposition. No eggs were laid on leaves treated with aqueous emulsions of 20 mL of oil/L of water in the choice test and on the leaves treated with 10 and 20 mL of oil/L in tbe no-choice test. The relationships between oviposition and oil concentration (0, 2.5, 5, 10 and 20 mL of oiI/L) in sprays in the choice test suggested that deposits of sprays containing > I0 mL of oil/100 L of water would completely suppress oviposition for 2 d after the application of spray. In the no-choice test, deposits of sprays containing 5 mL of oil/L reduced oviposition by 97% over 2 d.
Original languageEnglish
Pages (from-to)59-64
Number of pages6
JournalGeneral and Applied Entomology
Volume31
Publication statusPublished - 2002

Keywords

  • oil as pesticide
  • Greenhouse whitefly
  • control
  • pesticides

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