by Texas Forest Service
Donald M. Grosman, Christopher Fettig William Upton and Marrianne Waindel
Progress Education Science Technology Vol. 17 No. 2: July 2012
Abacide 2: Three Ips trials evaluated the duration of 1) two high rates (0.4 and 0.8 g AI/inch DBH) of abamectin in 2008-2011; 2) three lower rates (0.4, 0.2 and 0.1 g AI/inch DBH of abamectin after application in fall 2010 or spring 2011; and 3) azadirachtin (Aza-Sol®) and dinotefuran (Safari®) applied via bole spray, soil drench, or trunk injection in spring 2011. All rates of abamectin were highly and equally effective against Ips engraver beetles 5, 10, 16, 22, 28, 36 and 40 months after injection in Trial 1 and 3 and 9 months after injection in Trial 2. In contrast, both azadirachtin and dinotefuran were ineffective in reducing the colonization of pine logs by Ips engraver beetles.