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Fine Art Grubs: Chlordane, the 50 percent wettable powder, controls grubs of Japanese Beetles, Oriental Beetles, Asiatic garden Beetles and the European chafer. It is ineffective against the grubs of the May or June bug. Chlordane is used at the rate of one half pound to 1,000 square feet. One treatment remains effective for two years. It should be applied in spring, about the time the trees begin to leaf.
A 10 percent DDT dust applied at the rate of six pounds per 1,000 square feet is effective against most grubs and remains effective for four or five years. •
Be suspicious that grubs are present if you notice, in late spring or summer, that the turf is loose and springy as it is after hard frost has left it in early spring. Starlings and grackles feeding in flocks often indicate the presence of grubs. In abstracting the creatures from the turf these birds make clearly visible holes about a qufine art grubser of an inch in diameter.
With the exception of the grubs of June or May beetle the others have a similar life cycle. The eggs are laid in sunny lawns in June or July. In a week to 12 days they hatch into pin-head-sized grubs which immediately begin to feed on decaying organic matter and the roots of grasses. They increase in size rapidly and as they grow they eat more. When about one-third grown they shuck their skins and replace them with bigger ones and continue to feed ravenously until cold weather comes. Then they burrow into the soil to a depth of three to 12 inches and hibernate for the winter. |
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