Effect of foliar applications of some insecticides onBemisia tabaci, predators and parasitoids: Implications in its management in Pakistan |
| |
| Authors: | M Naveed A Salam M A Saleem Ali H Sayyed |
| |
| Institution: | (1) Central Cotton Research Institute, Multan, Pakistan;(2) Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan;(3) University College of Agriculture, Bahauddin Zakariya University, Multan, Pakistan;(4) University of Sussex, Brighton, UK |
| |
| Abstract: | Three experiments were carried out during three consecutive years to evaluate 19 insecticides and 12 tank mixtures of different
groups of insecticides against the whiteflyBemisia tabaci and its predators and parasitoids under field conditions in cotton. In the first experiment, the whitefly population was
lower in treatments with thiacloprid and higher in those with black warrant (a.i. alcohol) and cypermethrin; the number of
predators was higher with Agri-50 and spinosad and lowest with cypermethrin, whereas percent parasitism was higher with thiacloprid
and lower with methamidophos. In the second experiment, the whitefly population was lower in treatments with buprofezin, pyriproxyfen
and diafenthiuron and higher in those with endosulfan, imidacloprid and thiamethoxam; the number of predators was higher with
pyriproxyfen and lower with thiamethoxam, whereas percent parasitism was higher with pyriproxyfen and lower with thiamethoxam.
In the third experiment, the whitefly population was lower in a treatment mixture with buprofezin + fenpropathrin and higher
in that with thiamethoxam + chlorpyrifos; the number of predators was higher with buprofezin + fenpropathrin and lower with
deltamethrin + triazophos and deltamethrin + chlorpyrifos, whereas percent parasitism was higher with the mixture of pyriproxyfen
+ chlorpyrifos and lower in imidacloprid + chlorpyrifos, betacyfluthrin + triazophos, and deltamethrin + triazophos. Effective
use of these insecticides to manage whitefly infestations and to save predators and parasitoids is discussed.
http:www.phytoparasitica.org posting August 7, 2008. |
| |
| Keywords: | Gossypium sp insect growth regulators insecticides with novel modes of action nicotinoids organophosphates synthetic pyrethroids whitefly |
| 本文献已被 SpringerLink 等数据库收录！ |
|
