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The influence of planting date, transgenic Bt maize and hybrid relative maturity on European corn borer Ostrinia nubilalis (Lepidoptera: Crambidae) ovipositional patterns
Author(s) -
Obopile Motshwari,
Hammond Ronald B.
Publication year - 2013
Publication title -
entomological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 20
eISSN - 1748-5967
pISSN - 1738-2297
DOI - 10.1111/1748-5967.12030
Subject(s) - ostrinia , crambidae , biology , european corn borer , sowing , lepidoptera genitalia , voltinism , pyralidae , agronomy , population , genetically modified maize , horticulture , botany , genetically modified crops , larva , transgene , biochemistry , demography , sociology , gene
A three year study was carried out at H oytville and at W ooster, O hio, USA from 2006 to 2008 to investigate the influence of planting date, transgenic maize and hybrid maturity on O strinia nubilalis ( H ubner) population dynamics and oviposition patterns. Maize plants were planted in late A pril or early M ay, mid‐ M ay and early J une during each year. The moth flight pattern showed bivoltine generations during the three years. The first moth flight peaked in J une, with the populations declining during J uly. The second moth flight peaked in A ugust and declined towards the end of S eptember or early O ctober. Egg mass density did not differ significantly between transgenic and non‐transgenic maize of different maturities. Significant differences were observed, however, among planting dates, sampling dates, and sampling date × planting date interactions. Generally higher numbers of egg masses from second generation moths were deposited on late planted maize than middle and early plantings.