Issue 15, August 27, 2010

White Grubs

White grubs in moderately damaging numbers have been reported in east central Illinois. Be vigilant for wilting and browning turf areas. Cut through the turf and pull it back to reveal the white grubs in or just below the root zone and verify that they are the cause of the damage. Ten to twelve or more Japanese beetle and/or masked chafer grubs per foot square are enough to cause damage. Trichlorfon (Dylox) watered in with at least one half inch of water will provide control in about three days. Other insecticides will also provide control, but will take longer to kill the grubs.--Phil Nixon, Bill Sharp

Phil Nixon

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