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Title: INSECTICIDE RESISTANCE DIFFERENCES IN WHITEFLIES FROM FOUR REGIONS: AGRICULTURAL, OPERATIONAL AND ECOLOGICAL COMPONENTS

Author
item CASTLE, STEVE - PREVIOUS WCRL, BRAWLEY,CA
item PRABHAKER, NILIMA - UNIV OF CA, RIVERSIDE, CA
item Henneberry, Thomas
item TOSCANO, NICK - UNIV OF CA, RIVERSIDE, CA
item LEON-LOPEZ, R - INIFAP, MEXICALI, MEXICO
item SANCHEZ, B - INIFAP, MEXICALI, MEXICO
item GONZALEZ-LOC, M - INIFAP, MEXICALI, MEXICO

Submitted to: Silverleaf Whitefly: 1997 Supplement to the Five Year National Research and
Publication Type: Abstract Only
Publication Acceptance Date: 8/1/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Management of Bemisia tabaci (type B) in the southwest USA and northern Baja CA has improved tremendously in the years following the first destructive outbreaks. This is a significant achievement in that many of the agricultural production areas in this region represent optimal environments for explosive growth of B. tabaci populations. They feature overlapping seasons planted with vast areas of highly suitable host crops and a climate with mild winters, phantom rainfall, and long, hot summers that drive generation times to periods of 2.5-3 weeks for 5-6 consecutive months. Outbreaks such as those that occurred in Imperial Valley in 91-92 and in AZ and Mexicali in 92 stand as testaments to the brute-force potential of B. tabaci in these embracive environments. The same settings and basic ingredients for destruction are still in place, but the difference between then and now is that management and research experience has taught the necessity for early and constant vigilance against whitefly infestations, and that we have more potent and effective chemicals for combating infestations.