Preventing Japanese Beetles
tracyvine
13 years ago
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professorroush
11 years agoDublinah
11 years agoRelated Discussions
Dish liquid for Japanese beetle prevention?
Comments (9)The only nice feature of JB's is that their defense mechanism is to fall when they sense danger. You can place a hand, creating a shadow above a bunch of them and they will fall or roll off of a leaf right into your pot of water. JB's are drawn to each other and will usually be found in groups. I doubt there is a relationship between heat of the day and grouping. However, if the heat of the day is actually hot, they will no longer fall, but instead fly away; and they are almost impossible to catch in the heat of the day....See Morejapanese beetle problem
Comments (21)I bought the Heterohabditis B./Steinernema Carpocapsae - Mixed Acre Size Pack-100 Million from Buglogical which says it treats 1 acre but upon reading information from several other sittes I determined this would treat 2 acres easily. And from what i have seen so far it has. This is a mix of nemetodes the HB attacks Cucumber Beetle, Grubs, Gall midge, Strawberry Rootweevil, May/June Beetle, Masked Chafer, Cranberry Rootworm, Flea, Scarab and Japanese beetles, Straw- berry Root and Black-vine Weevils, Chafer, Squash Bugs, Leaf Beetles, Termite, Cutworms, White Grubs, Algae Gnats, Black Fly, Potato Tubeworm, Meal Worm, Bark Beetle, Corn Root Weevil, Fire Ant, sting Bugs, Pine Beetle, Gall Gnats, Gypsy Moth, Corn Root Worm, Billbug, Colorado Potato Beetle, Thrips, Ants and termites (apply directly to mound and nest areas),and many other deep soil dwelling insects. The SC attacks Fleas, Dog and cat flea larvae, Codling Moth, Cutworm, Armyworm, Leafminer, Bluegrass billbugs, termites, ants, Sod Webworm, Mole Cricket, some caterpillar pests, Billbug, Flies, ArmyWorms, Loopers, European Crane Fly, Cranberry Girdler and many other surface dwellers. My husband did the application using a 4 gallon pressure sprayer. It took him about 6 hours to cover 2+ acres over 3 days (on 2 days he would do this about 1.5 hours before sunset and would quit when he could not see any longer, about 1.5 hours. The 3rd day it was raining so he went out spraying in the rain for 2 hours or so). It would have taken less time but he had to keep making new nematode mixtures each time he emptied the spayer and that took about 15 minutes each time. I believe we could have saved a lot of time by doing a premix, which should have worked as long as we used the mix up within a few hours. But since we took our time in applying a premix would not have worked well for us. Nematodes are not that hard to apply but they are fussy about conditions. It must be damp for weeks for them to work well and we have had nothing but damp cool conditions for months so they are working very well for us. If it were droughty I would not use them as they would not work at all....See MorePreventative measures wise for Japanese Beetles???
Comments (6)you can try traps ...they do work on limited infestations but I think they are expensive unless all your stuff is clustered and you can rely on one or two traps and as I said infestation is small .I would recommend seven ...as far as pesticides are concerned it is relativly safe and is tolerated well by jm's...it must be used repeatedly if it rains and I suggest the liquid spay so your plants don't look like snow trees (white)... And YES if you see one more will likely be not far behind ....the JB's are picky some JM cultivars will be effected others not ...but periodic light spritzing as a preventative ONCE you actually see ther evil beetles will help in catching it before any denudeing takes place . I just noticed them yesterday eating on my rasberries and grapes but just south of here reports are the they have become as plague of biblical proportions this year YIKES!!!!!...David...See MoreCross post: Japanese beetles - best prevention/treatment?
Comments (9)My JBs were at their worst when I had mostly OGRs. It didn't matter whether they were once bloomers or not fragrant, the JBs ate everything. They also eat grapes, raspberries and apples. USDA does not recognize them as doing any major crop damage and only considers them an ornamental nuisance. I put down milky spore - 3 cans of it over three gardens and I couldn't say it really helped. But I'm in the country with open fields and lots of multiflora so I'm sure they just keep traveling here to the gardens. The granules are for easier spreading so you get the viable product mixed in with a large amount of filler to spread. The concentrate powder is put on by spoonful on a 4' grid. Both should be watered in. Sadly hardy geranium/cranesbill or any other herb or perennial does not really have any affect on them or at least mine don't care!...See Morefloridarosez9 Morgan
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