A laboratory-based method to measure relative pesticide and spray oil efficacy against broad mite,Polyphagotarsonemus latus(Banks)(Acari: Tarsonemidae)
✍ Scribed by Grant Herron; Laura Jiang; Robert Spooner-Hart
- Book ID
- 104623232
- Publisher
- Springer Netherlands
- Year
- 1996
- Tongue
- English
- Weight
- 435 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0168-8162
No coin nor oath required. For personal study only.
✦ Synopsis
Six pesticides and two spray oils were tested against Polyphagotarsonemus latus. The chemicals were evaluated under laboratory conditions, requiring the development of a novel bioassay method, which is reported here. The pesticide toxicities fell into three distinct groups, namely abamectin, conventional pesticides and oils. The relative pesticide toxicities at the LCso level were ahamectin 4.9 x 10 -8 g ai 1-1, endosulfan 1.1 × 10 -3 g ai 1 -I, fenpyroximate 2.3 x 10 -3 g ai l -l, pyridaben 4.1 x 10-Jg ail -t, tebufenpyrad 4.4 x 10 -3 g ai l -I, dicofol 4.5 x 10 -3 g ai 1-1, petroleum spray oil 3.4 x 10 -t g ai 1-1 and canola oil 4.1 x 10 -I g ai 1 -l. The calculation of the LC99 9 values allows for resistance monitoring in P. latus and the suggested discriminatin~ concentrations are abamectin 1.0 x 10 -4 g ai l-l; endosulfan, pyridaben and dicofol 1.0 x 10 -' g ai 1-1 fenpyroximate and tebufenpyrad 5.0 x 10 -I g ai 1 -l.