LABORATORY AND FIELD EVALUATION OF A FAST-ACTING INSECT GROWTH REGULATOR AGAINST THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE)
Keyword(s):
AbstractUC-62644, a moult-inhibiting insect growth regulator (IGR) belonging to the benzoylphenylureas, had an EC50 of 0.1 to 0.2 ppm in a meridic diet for the 3rd to 6th larval instars of the spruce budworm, Choristoneura fumiferana Clemens. The effects of the IGR were apparent in less than 48 h after ingestion and there was evidence for some contact toxicity. The larvae were unable to discriminate between IGR-treated and untreated diet. Experimental aerial application of the IGR revealed that at <70 g in 4.7 1/ha (1 oz in 0.5 U.S. gal/acre) it effectively controlled spruce budworm populations and afforded foliage protection. These results were comparable with those obtained with Matacil® applied at the recommended rate.
1996 ◽
Vol 31
(2)
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pp. 135-163
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1991 ◽
Vol 42
(3)
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pp. 249-254
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1983 ◽
Vol 76
(4)
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pp. 708-710
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1997 ◽
Vol 90
(2)
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pp. 551-559
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1976 ◽
Vol 24
(1)
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pp. 169-175
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1986 ◽
Vol 79
(2)
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pp. 323-328
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1988 ◽
Vol 39
(4)
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pp. 339-346
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1999 ◽
Vol 38
(2)
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pp. 135-140
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