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 language | English |
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Pages (from-to) | 59-64 |
Number of pages | 6 |
Journal | General and Applied Entomology |
Volume | 31 |
Publication status | Published - 2002 |
Keywords
- oil as pesticide
- Greenhouse whitefly
- control
- pesticides