IMPACT OF A SCREEN BARRIER ON THE INTROGRESSION OF THE GLASSY-WINGED SHARPSHOOTER INTO A NURSERY YARD

• Author(s): Blua, Matthew; Redak, Richard; Bowers, Brad; Crudup, Robert; Hanes, Craig; Morgan, David;
• Abstract: We are seeking unique tactics to curtail the movement of Homalodisca coagulata, the glassy-winged sharpshooter (GWSS), on nursery stock to non-infested areas of California. On the basis of our prior experiment that examined the height of GWSS flight out of citrus, we tested the potential of 5 m high screen barriers to reduce the influx of GWSS into a nursery yard from surrounding citrus and native vegetation. We also examined GWSS flight direction and behavior when placed near or on a barrier. We found two distinct periods of GWSS incursion into the nursery yard: the first of the year and in mid-summer. In sticky traps set a 1, 3, 5, and 7 m high, more than 99% of all GWSS were caught at 5 m or less. Although more GWSS were caught immediately inside areas where 5 m high barriers were constructed than areas without barriers, fewer GWSS were caught inside barriers than outside barriers. When released midway between the barrier and adjacent vegetation fewer GWSS flew in the direction of the barrier than away from the barrier.
• Publication Date: Aug 2003
• Journal: 2003 Pierce's Disease Research Symposium