Occurrence of whiteflies and their integrated management in Taiwan

Journal
Proceedings of the International Seminar on Whitefly Management and Control Strategy
Pages
245-257
Date Issued
2005-10
Author(s)
Tzay Tien Hsieh
Chin Lin Wang
URI
Abstract
Several species of whiteflies attack agriculture crops, and they typically have a wide host range and widely occurred in Taiwan. The most common whiteflies on vegetable crops, ornamentals and fruit crops are Bemisia tabaci complex species and the spiraling whitefly (Aleurodicus disperses Russell). It is difficult to efficiently control them with single method. This paper summarizes the distribution, host range, damage and ways of control regarding several important whiteflies in Taiwan. The comparative toxicity of 12 registered insecticides on silverleaf whitefly, Bemisia argentifolii and its parasitioid, Eretmocerus orientalis, were tested in the field. The results show that 4 insecticides, acetamiprid, abamectin, imidacloprid and cartap, have high toxicity to both B. argentifolii and Er. orientalis. Moreover, methomyl, bifenthrin and decamethrin appear to show higher toxicity to all stages of Er. orientalis than B. argentifolii. On the contrary, other chemicals, such as pyriproxyfen, azadirachtin, buprofezin, hexaflumuron and pymetrozin, appear to have a selective toxicity in which they are safer to the natural enemy Er. orientalis than to the host B. argentifolii. Results indicated that approach in the integrated use of systematic insecticides with parasitoids could increase the efficiency of controlling B. argentifolii on the poinsettia in net house.
Subjects
bemisia argentifolii
eretmocerus orientalis
integrated management
occurrence
taiwan
aleurodicus disperses
Publisher
Food and Fertilizer Technology Center (FFTC)
Description
Date: October 3–8, 2005
Location: TARI, Taichung, R.O.C.
Food and Fertilizer Technology Center (FFTC) for the Asian and Pacific, Taipei, Taiwan, R.O.C.
Type
conference paper