It’s best to consult with a lawn care professional because without knowing insect or disease life cycles, product components, mode of action, and application method – you could be applying the wrong product, at the wrong time, for the wrong pest. To summarize, even under ideal conditions, using milky spore disease to control grubs, even Japanese beetle grubs, is a serious waste of money and time. How to Build a Milky Spore Tube Dispenser Pests, Weeds & Problems 15.5K subscribers Subscribe 2. Additionally, the bacteria can take over 4-5 years to build up…under ideal conditions…with a high population of Japanese beetles grubs! Wow! While you wait for the milky spore to become effective, try beneficial nematodes. This consistently high soil temperature rarely occurs in our region. Answer 2: A naturally occurring pathogen, milky spore disease ( Bacillus popilliae ), affects beetle larvae and will kill grubs without harming you or your garden, but it can take one to three years to become fully effective. The third reason not to use milky spore in NH and VT is the fact that the soil temperature must be 60-70 for three months. Therefore, if you do not have a large Japanese beetle grub population, one where you would likely see damage – why bother? Secondly, you must have sufficient numbers of Japanese beetle grubs in your lawn to promote the bacterial population enough to expand and spread out in the soil. This ugly little white grub is what Milky Spore Granules target. If you didn’t know, those nasty little white grubs you see squirming their way through your yard are just the larval form of the Japanese beetle. This bacillus primarily targets Japanese Beetle grubs, the soil-dwelling larval stage, before they become the destructive adults. So now you understand that even if milky spore could work, you would only be controlling one grub out of many…not good odds. It is responsible for a disease (commonly called milky spore) of the white grubs of Japanese beetles. Milky Spore is a natural, organic insecticide that directly targets the Japanese Beetle Grub. Milky Spore uses the naturally occurring bacterium, Paenibacillus popilliae. Unfortunately there are many more turf damaging grubs in NH and VT including Asiatic beetles, European and masked chafers, June and May beetles and armyworms. The first reason not to use milky spore is that it was manufactured to control ONLY Japanese beetle grubs. Milky spore comes in a powder and consists of a bacteria. Spores are ingested by scarabaeid larvae as they feed on roots and organic matter in the. Milky spore has been around for decades and was the first biological disease to control Japanese beetle grubs. (C) Milky spore type A with spore and parasporal body. According to a University of New Hampshire publication on milky spore disease, there are more reasons NOT to use this product than to use it in your home lawn.
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