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2005 Turf Insect Summary

2005 Turf Insect Summary. New Hampshire Stan Swier. Biology of ABW. Feeds mostly on annual bluegrass ( Poa annua Prefers Poa cut at <0.5 in (greens, tees, fairways Larvae initially feed in leaf blade but eventually move to crown Pupations occurs below crown in soil

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2005 Turf Insect Summary

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  1. 2005 Turf Insect Summary New Hampshire Stan Swier

  2. Biology of ABW • Feeds mostly on annual bluegrass (Poaannua • Prefers Poa cut at <0.5 in (greens, tees, fairways • Larvae initially feed in leaf blade but eventually move to crown • Pupations occurs below crown in soil • 2 generations/yr, sometimes 3

  3. ABW Control- 2005 • Due to very long oviposition period, many sites required 2 or more preventative pyrethroid applications for good control • Mixed life stages – confused superintendents • Yellow Poa – assumed to be cold related • Common error-premature applications • Curative controls consisted of Merit, Dylox and Dursban, 1-4 applications • Pyrethroid resistance observed (CT) – more treatments will be made

  4. White Grubs • Wet, cold spring- JB emergence delayed 12 days – fooled superintendents, fall damage severe • Wettest October on record – pyrethroids gave unusually good curative control of JB

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