Maize chlorotic mottle virus may also be transmitted to corn. Life cycles of rootworms are about 30-40 days with about 3 weeks in the larval stage. Adults lay eggs on the soil surface near plants. Larvae burrow into the soil and underground portions of the host plant. David Adams, UGA the soil.
Adults emerge and feed on plants causing significant damage on some.
Rootworm damage is most common in heavy, damp soils. Any cultural practices that helps dry the soil surface will reduce survival of rootworm eggs and early-instar larvae. Soil insecticides are effective if applied at the proper time. Control of adult beetles, either intentionally or with insecticides targeting other pests, will also reduce the number of larvae in the soil. A County Agent's Guide to Insects Important to Agriculture in Georgia.