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Chafer grubs can be found in the soil under the loose turf. Distant: Turf thins in patches in lawns or golf course roughs. Skunks and raccoons may turn over heavily infested turf in search of grubs to eat. Damage may also occur when skunks and raccoons feed on the grubs.

In Michigan, the European chafer is now common through all of the Lower Peninsula. It takes a while for the materials to be absorbed by the plants and they work best on small grubs. Natural control of European chafer by predators, parasites and pathogens is excellent in Europe but poor in the United States. It is also important to apply it early enough to give the chemical a chance to be picked up by the grass before the grubs become large. They do not kill the grubs present at the time they are applied; they kill the ones that will be developing in 3 � 12 weeks. Preventive products are the most effective. Site: European chafer tends to prefer dry or well drained soils. Although not as widespread as Japanese beetles, European chafer grubs are more damaging to home lawns in areas where both are found. The culprit: a new invasive species, the European chafer. Adult beetles emerge from the soil between the middle of June and early July in Michigan and New York. The European chafer, Rhizotrogus majalis, is native to western and central Europe.

MSU is an affirmative-action, equal-opportunity employer. They are bigger than the adult beetles and, if straightened out, can be up to 18mm (almost ¾in) long Chafer grubs, dung beetles and stag beetles all have similar looking grubs.

First instar (or larval stage) grubs emerge from eggs in early August and molt to second larval stage instars by the middle of August. Grubs are C-shaped, white, and can get up to one-inch long (June beetle grubs are larger). Unlike Japanese beetles, European chafers are not a problem in irrigated turf. Finally, when applying any of these products, you must water it in.

The European chafer may be the most serious grub pest of home lawns and low-maintenance turf. It is important to get the material into the root zone so that it can be picked up by the plant. This will build a dense stand of turf and a diverse community of insects that will keep turf pests under control. Time of year when damage appears: In southern Michigan European chafer grubs feed heavily in September, October and early November, then again in March and April, sometimes causing dead patches to appear and expand at that time. Always wear rubber gloves, long pants and rubber boots when applying insecticides. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. European chafer grubs are not usually found in daily-irrigated turf. Most of the damage is done by the third (final) instar grubs in the fall and early spring, but damage can be masked by the abundant moisture at these times. On average, 24 percent of the grubs do not survive the winter. If it is getting cool, the grubs will not be feeding and will not pick up any of the insecticide. It is best to wait and apply a preventive compound for a spring grub problem unless there is a very high population. However, European chafer, Japanese beetle, Oriental beetle, masked chafer and Oriental beetle larvae can be found in conjunction with each other. The chemicals listed earlier are by common name.

The larvae pupate (and stop feeding) in late May. However, European chafer, Japanese beetle, Oriental beetle, masked chafer and Oriental beetle larvae can be found in conjunction with each other. Since the control measures for all of these grubs species is … Wear protective clothing required per the label including rubber gloves and rubber boots when applying the insecticide and keep children and pets away from the treated area until the grass is dry. The European chafer has a 1-year life cycle. When Do Chafer Grub Attacks Occur? Home lawns, golf courses, and turf growers have the potential to be most significantly impacted if the European chafer beetle were to become established in … Chafer Grubs typically have thick, cream coloured bodies that turn darker towards the back end. Beetles may return to the trees to re-mate several times over the mating period. Information on the use of insecticides to treat turf pest problems is only meant to be used for the unusual cases where turf damage from pests becomes unacceptable. Click here for the mobile/phone version of this web site. They remain as pupae for about two weeks before emerging as adults. The beetles are most active on warm, clear nights when the temperature is above 19 °C (66 °F). They do not feed as adults. They emerge at about 8:30 pm, mate through the night, and return to the soil by daybreak. The immature stage, or grub/larva, lives in the soil and eats grass roots. Most of the southern part of the Lower Peninsula is now in that situation. Eggs are laid from late June through July. When applying an insecticide, remember, the label is the law.

European chafer adults are 0.5 inch long, and males and females are a uniform tan or light brown color.

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Tags: home gardening, home lawns, lawn & garden, pest management, turf, Lawn & Garden, Gardening in Michigan, Home Lawns, Turf, Integrated Pest Management, David Smitley The European chafer is a very serious grub pest of turf and can cause more turf damage than the Japanese beetle. They feed through late summer and fall, not stopping until the ground freezes. Since the control measures for all of these grubs species is similar, the same threshold applies for all four species. In the spring they feed on grass roots, causing the damage we saw earlier this year.

When properly applied they will give 90+% control of grubs. Chlorantraniliprole is a relatively new compound for grub control. Don�t use these too late in the fall as it will take one to two weeks to get to where the grubs are feeding. European chafer grubs have caused turf damage on golf course roughs, home lawns, athletic fields and recreational turf. European chafer grubs are slightly larger than Japanese beetle grubs. MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. Do this in several spots in the yard close to and around the dying patches of turf. Those eggs hatch, and the larvae begin to feed. Homeowners may not even see the beetles because of his nocturnal behavior. Author:

European chafer grubs prefer to feed on fibrous roots, and can damage ornamental and nursery plants by reducing their fibrous root system. Late in the period, the adult carc… For more information on the European chafer and how to control it in your lawn, contact Annie Deutsch, Door County Agriculture Agent, by email at [email protected], by phone at 920.746.2263 or visit door.uwex.edu/horticulture/. Use the rate recommended on the label for the pest you are attempting to control. Larvae are typical C-shaped white grubs, reaching a maximum size of 0.25 inch wide and 1 inch long.Most European chafer grubs complete development in one year, but a small proportion of the population may require two years to complete development. They can be identified to species by the pattern of hairs on the underside of the last abdominal segment, called the raster. European chafer is a small tan to brown beetle around ½-inch long. They stop feeding and again, will not pick up any insecticide if it is applied too late. Spring damage from European chafer grub feeding on the MSU campus. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. Sampling: Between September 1 and November 1, dig a 1 ft2 area of turf down about 3 inches and sort through the roots and soil to look for grubs.

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