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Females typically lay eggs in the top 8 inches (200 mm) of soil, although they may be laid more than 12 inches (300 mm) deep, particularly if the soil surface is dry. Western corn rootworm females are more likely to lay some of their eggs below the 8-inch (200 mm) depth than northern corn rootworm females. [2]
Diabrotica barberi, the northern corn rootworm, is a species of skeletonizing leaf beetle in the family Chrysomelidae. It is found in North America . [ 1 ] [ 2 ] [ 3 ] Adults feed on corn, and, when corn is unavailable, goldenrod pollen.
Diabrotica barberi R. Smith & Lawrence, 1967 - northern corn rootworm Diabrotica barclayi Derunkov, Rocha Prado, Tishechkin & Konstantinov, 2015 Diabrotica balteata LeConte, 1865 - banded cucumber beetle
Diabrotica undecimpunctata, the spotted cucumber beetle or southern corn rootworm, is a species of cucumber beetle that is native to North America. The species can be a major agricultural pest insect in North America.
It includes two subspecies, Diabrotica virgifera virgifera (the western corn rootworm) and Diabrotica virgifera zeae (the Mexican corn rootworm). [2]
For example, the northern corn rootworm (Diabrotica barberi) became adapted to a corn-soybean crop rotation by spending the year when the field is planted with soybeans in a diapause. [6] As of 2014, few new weed killers are near commercialization, and none with a novel, resistance-free mode of action. [7]
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During her adult life of 18 to 24 days, a female can lay a total of 400 to 600 eggs. [7] The female European corn borer moth first lays eggs in June. The eggs are laid on the underside of corn plant leaves near the midvein. Around 90% of the eggs are laid on the leaf just below the primary ear leaf, and an equal number of eggs are laid above ...