Maize phenological stages influence within the field distribution of Corn rootworm (Coleoptera: Chrysomelidae) and oviposition
2012
Obopile, Motshwari | Hammond, Ronald B.
three year study was conducted at south Charleston and Wooster, Ohio, UsA to determine the influence of planting date, transgenic maize and seed treatment on distribution and population dynamics of corn rootworm (Diabrotica virgifera virgifera, Coleoptera: Chrysomelidae), adult oviposition. the results showed the distribution of adult corn rootworm significantly skewed to late planted maize than early planted maize. However hybrid and seed treatment did not significantly influence the distribution and population dynamics of corn rootworm beetles. A significant increase of corn rootworm adult in late planted maize was possibly due to emigration of beetle out of earlier planted maize into late planted maize to feed on newer silk and consequently lay eggs. Further significantly high densities of eggs were observed on late planted maize.
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