EFFICACY OF AERIAL APPLICATIONS OF BACILLUS THURINGIENSIS BERLINER AND TEBUFENOZIDE AGAINST THE EASTERN HEMLOCK LOOPER (LEPIDOPTERA, GEOMETRIDAE)

摘要

The formulated product of the insect-molting hormone analog, tebufenozide (MIMIC 240LV), and two aqueous formulations of Bacillus thuringiensis subsp. kurstaki, ABG6387 and ABC6414, were aerially applied over prethinned commercial stands of balsam fir infested with the eastern hemlock looper. MIMIC(R) was applied once at the rate of 65.1 g active ingredient (ai) in 1.86 L/ha and twice at the rate of 33.4-35.4 g ai in 1.91-2.02 L/ha. The formulations of B. thuringiensis were applied twice at rates of 19.3-24.1 billion International Units (BIU) in 1.54-1.93 L/ha for ABG6387 and 33.2-36.0 BIU in 1.67-1.80 L/ha for ABG6414.