Control Japanese beetle

map showing parts of infested japanese beetles, of november 2006: present in many more sites of july 2012.

during larval stage, japanese beetle lives in lawns , other grasslands, eats roots of grasses. during stage, susceptible fatal disease called milky spore disease, caused bacterium called milky spore, paenibacillus (formerly bacillus) popilliae. usda developed biological control , commercially available in powder form application lawn areas. standard applications (low density across broad area) take 1 5 years establish maximal protection against larval survival (depending on climate), expanding through soil through repeated rounds of infection.

on field crops such squash, floating row covers can used exclude beetles, may necessitate hand pollination of flowers. kaolin sprays can used barriers.

research performed many extension service branches has shown pheromone traps attract more beetles catch. traps effective when spread out on entire community, , downwind , @ borders (i.e., far away possible, particularly upwind), of managed property containing plants being protected. natural repellents include catnip, chives, garlic, , tansy, remains of dead beetles, these methods have limited effectiveness. additionally, when present in small numbers, beetles may manually controlled using soap-water spray mixture, shaking plant in morning hours , disposing of fallen beetles, or picking them off attractions such rose flowers, since presence of beetles attracts more beetles plant.

several insect predators , parasitoids have been introduced united states biocontrol. 2 of them, istocheta aldrichi , tiphia vernalis, established significant rates of parasitism.