what chemicals kill chafer grubs

You can measure how much irrigation is applied by putting out several coffee cups in your lawn and run the irrigation until they fill to a half-inch level above the bottom. Japanese beetle grubs also feed on turf roots in home lawns, but they are not usually as much of a problem on home lawns as European chafers can be. For a long time, the most common way to treat these grubs was a pesticide spray. The grubs get their start when the adult beetles lay eggs in your turf, usually in spring. Professor Daniel. However, when applied in June or July they provide excellent protection against the next generation of grubs. The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. mowing your yard with the mower on the highest setting. These lawn pests tend to curl up in a “C” shape at rest. There is a widely sold trade name called Triazicide from Spectrum that lists grubs on the label and states it will control insects above or below ground and has a picture of a grub on the front of the bag. It is important to realize that healthy turf, supported by frequent rain or irrigation, can support a grub population of five or more grubs per square foot with no visible turf damage. Bayer offers two products... 3. Lawn grubs can be present in your lawn but cause absolutely no problems. The most common (and, sadly, most effective) ways to kill grubs are chemical insecticides. Although the bag often says apply anytime from May to Aug. 15, it is highly recommended that products containing imidacloprid, thiamethoxam, clothianidin be applied and irrigated into the soil in June or July. However, for low-maintenance lawns, even if the turf is not killed from grub feeding, the thinned and weakened turf may be prone to weeds and drought stress. Adult beetles typically lay their eggs in June or July and, by August, those eggs hatch into larvae. If it’s still firmly rooted, then you have another problem, such as brown patch or dog urine damage. If applied in early spring, the pesticide may move through the soil or partially degrade by the time the grubs hatch in late July. Neither of the products listed grubs on the label printed on the bag and neither of the products would have controlled grubs. If this has happened in your lawn, there is good news. There is one insecticide product in a different chemical class that will give a similar level of grub control: chlorantraniliprole (Acelepryn). Dylox and Sevin are the products to choose from. “But the problem is, [if] they’re eating that thatch, they do eat the roots and the crowns [of turfgrass], which kills the plant.”. However, they only work if used in the lawn in June and July. I went to several of the local lawn and garden centers in the Lansing, Michigan, area to see what kinds of products are available that specifically claim they will work to control grubs. “The commercial milky spore disease is only for Japanese beetles,” Shetlar warned. Products containing only these ingredients will not work for grub control because the active ingredient binds with organic material and will not move down to where the grubs are feeding. For some, a lush green lawn is a crowning achievement. “It’s irrelevant which species it is,” advised Shetlar. However, Shetlar did let on that the most experienced organic lawn care professionals may have the knack for using them effectively against white grubs. Cultural: Spike-aeration of turf may kill significant portions of white grub populations when they are feeding close to the soil surface (approximately 45 days after beetles appear). This article was published by Michigan State University Extension. The cockchafer larvae (grubs) are white or greyish-white in colour with dark heads and soft bodies (Figure 2). If you confirmed grub damage the previous fall or spring, meaning you found lots of grubs, then you may want to use a preventive insecticide for one or two years to build a more dense turf that will be tolerant of grubs. That’s the Japanese beetle and the masked chafer,” said Shetlar about his home turf. To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). Putting tarpaulin down on a surface sweats them out and they come to the surface and you sweep them off. Japanese beetles like to lay their eggs on irrigated turf like golf courses, athletic fields and highly maintained lawns. Several other species, such as May beetles and June beetles, are also present but usually in low numbers. Biological, granulated insecticide is a great non–chemical choice to control grubs found in lawns. There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. Safe for use on all types of grass and ornamentals. Nemasys G (controls chafer grubs) contain nematodes that provide the perfect biological control by entering the larvae, which stops them feeding within three days of infection. Non-Toxic Lawn Grub Killers. They are short-lived compounds that kill all life stages of grubs. Shetlar added, “If there are four to five grubs per square foot, that’s usually enough for them to be digging around.”. They too like roots but restrict themselves to lawns. But what are the most effective options for sustainable-minded lawn owners? His key to this: fertilizing one’s lawn with nitrogen only once per year, and doing it very strategically “and judiciously,” to quote Shetlar, “usually in late October, early November.”. These two insecticides are the only options if high numbers of grubs are found in the fall and in spring before early May. I would first try nematodes - there is a specific type for chafer grubs and one for leather jackets. It’s when these “de-thatcher” populations grow out of control that the dreaded lawn damage takes place. European chafer grubs may be found in all locations in Michigan’s Lower Peninsula and in much of the Upper Peninsula. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. May 22, 2020. Weeds that flower again after mowing are much safer than weed flowers that were sprayed directly with insecticide, but some of the insecticide is absorbed by the roots and will move into the pollen and nectar. Chafer grub treatment Your Greensleeves local lawn care expert will use our own biological insect control treatment, known as nematodes, to kill the chafer grubs. Our research has indicated that carbaryl has been a little more effective on European chafer grubs than trichlorfon. When talking about the maximum threshold of tolerance for grubs, “I always chuckle about [checking the threshold], in that skunks and raccoons haven’t read about this threshold.”, As such, it may be worthwhile for homeowners to be just a little warier on account of skunks and raccoons. Bayer Advanced 700740S 24 Hour Grub Killer Plus, Granules & Bayer Grub Control, Spray. It was also reported in Wisconsin in 2013. Before doing anything, it is important to make sure the problem is grubs. A half-inch of irrigation is when lawn sprinklers are run until a container like a coffee mug, or several mugs, fills to a level 0.5 inches up from the bottom of the cup. All turfgrass species, especially annual bluegrass (a common weed in turf), Kentucky bluegrass, and perennial ryegrass. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for grub control. There are also products for sale that list grubs on the label that do NOT work for grubs. They spend the winter as large grubs (0.75 inches long) some 2-6 inches below the soil surface. The most common (and, sadly, most effective) ways to kill grubs are chemical insecticides. 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. They are preventive products that work very well on newly hatched grubs present in July, but do not work well for large grubs found from September to May. All life stages of grubs are chemical insecticides lay their eggs on irrigated turf like golf courses, fields... Today, LawnStarter lets makes it easy to schedule service with a doctoral degree Entomology! And borders and feed on the roots of turfgrass over another, that are considered curative treatments head.! 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