Abstract
In two geographical points of the Krasnodar Territory, viz. vil. Botanika, Gulkevichi District (eastern subzone of the Central natural-economic zone of the Krasnodar Territory) and st. Kurchanskaya, Temryuk District (Anapo-Taman natural-economic zone) on industrial plantations of maize, Delta sticky traps supplied with various baits were tested for attractiveness for adults of the European corn borer (ECB), Ostrinia nubilalis Hbn. In contrast to sex pheromones, traps with ‘bisex lure’ (semiochemicals phenylacetaldehyde and 4-methoxy-2-phenethyl alcohol) or LEDs captured a considerable number of females, whose prognostic value was significantly higher than that of males. On maize fields near Botanika traps with ‘bisex lure’ caught moths almost at 20- and traps with LEDs more than 70-fold higher rate as compared to sex pheromones. On maize plantations near Kurchanskaya, where both the saturation of crop rotations with maize fields and the pest population is significantly lower, semiochemicals caught ECB moths at the same rate as sex pheromones, in contrast to LEDs, which attracted insects by an order of magnitude more frequently. The results of the tests indicate that the use of LED traps for monitoring of ECB is promising under the modern economic situation of expanding the territories intended for the production of corn grain.
Highlights
Phytosanitary monitoring is an essential component of integrated plant management systems and the All-Russian Institute of Plant Protection (VIZR) represents a long-standing center for development of technological solutions that ensure its implementation in relation to harmful entomological objects (Andreev et al, 1976; Burov, Sazonov, 1987)
To account for the number of one of the most dangerous pests of maize, the European corn borer (ECB), Ostrinia nubilalis Hbn. (Lepidoptera: Crambidae) traps with synthetic sex pheromones have been used for many years (Laurent, Frérot, 2007)
The results of our 2019 pilot tests of traps baited with ‘bisex lure’ indicate that the combination of these semiochemicals is highly effective for monitoring ECB both in the Krasnodar Territory and Voronezh Region (Frolov et al, 2020)
Summary
Modern tools of catching insects are extremely diverse (Epsky et al, 2008; Golub et al, 2012) traps with synthetic analogs of sex pheromones are currently the most popular due to their undeniable advantages, i.e. cheapness, mobility, ease of installation and selectivity of the attracting action in relation to the target object of monitoring (Frolov, 2011). Tests conducted in five European countries of this semiochemical combination under the commercial name ‘bisex lure’ has confirmed this conclusion (Tóth et al, 2017). The results of our 2019 pilot tests of traps baited with ‘bisex lure’ indicate that the combination of these semiochemicals is highly effective for monitoring ECB both in the Krasnodar Territory and Voronezh Region (Frolov et al, 2020)
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