Catch efficiency of adult Lepidoptera pests of corn (Zea mays) and soybean (Glicine max) using mercury vapour and blacklight traps in the central region of Córdoba Province (Argentina)
Keywords:
Noctuidae, light traps, corn pest, soybean pestAbstract
The larvae of Lepidoptera are very important crop pests in central Córdoba Prov- ince (Argentina), because of the yield losses they produce on corn and soybean. We compared the efficiency of two light traps, one with a 125 W mercury vapour lamp HPL type and other with a 15-W blacklight lamp. Moth catches were counted 1-3 times/week, from December 1997 to December 2000. The comparison of trap efficiency for each species was carried out with the slope of the relationship between week catches obtained for each trap. The mercury vapour trap was more efficient for most of the species, with some variations depending on the period that was analysed. There were no significant differences between traps for Agrotis malefida and Agrotis ipsilon, and the blacklight trap was more efficient for Helicoverpa zea, Spodoptera frugiperda and Spilosoma virginica. For 8 out of the 18 collected species the efficiency of the traps depended on the species density.
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