The control of european vine moth population using mating disruption technique Isonet L Plus and Isonet L+E during 2014 and 2015 growing season in north-west Croatian grape production region

U Međimurskom su vinogorju dobivena prva pozitivna iskustva primjenom tada nove metode suzbijanja grozdova moljaca: konfuzijom ili zbunjivanjem (Ciglar i sur., 2002; Šubić i sur., 2003). Postignuto je to i udrugim državama (Barbieri i sur. 1996; Sauer & Karg, 1998; Charmillot & Pasquier, 2000). Učinkovitost metode konfuzije ili zbunjivanja bila je vrlo uspješna, a njezinu moguću ekološku i komercijalnu vrijednost u proizvodnji međimurskih vina tih je godina prepoznalo regionalno županijsko rukovodstvo sa željom da novčanom potporom pomogne širenju novog načina suzbijanja moljaca. Dispenzori za metodu konfuzije nisu se mogli nabaviti na našem tržištu, pa takva ideja nije ostvarena. Nakon pojave dispenzora tipa Isonet L Plus i Isonet L+E na našem tržištu provjerili smo njihovu djetlotvornost u Međimurskom vinogorju. Pokusi su postavljenu u 2014. i 2015. godini, provedeni su na dvije lokacije (Orehovčak, Železna Gora). Učinkovitost konfuzije grozdova moljca sa ShinEtsu Isonet ocjenjivana je na tri načina: praćenjem brojnosti leptira feromonskim klopkama u pokusnom i u kontrolnim vinogradima, pregledom i ocjenom zaraze cvjetnih organa i grožđa nakon razvoja prve i druge generacije ličinki štetnika i zdravstvenom ocjenom grožđa u berbi na sivu plijesan (Botrytis cinerea). Metoda konfuzije primjenom dispenzora tipa ShinEtsu Isonet L Plus i Isonet L+E tijekom 2014. i 2015. pokazala se učinkovitom mjerom zaštite od pepeljasta grozdova moljca.European vine moth (Lobesia botrana) is a significant pest in north-west Croatian grape production region (Medjimurje). This pest feeds primarily on the flowers and fruits of grape (Vitis vinifera). Grape vine moth in Medjimurje vineyard region has three generations annually. The first generation if frequently the largest (though not necessarily the most economically damaging) and the third generation is often the smallest. Every generation of the moth can be found in vineyards, however the second and third generations are the most damaging. Larvae in latter generations can seriously affect the mature grape berry harvest directly through larval feeding and indirectly by predisposing the crop to grey mold (Botrytis cinerea). Damage is greater in grape cultivars with compact clusters and/or sensitive to rot (Pinot Noir, Riesling, Sauvignon). A sex pheromone has been identified that is highly attractive to males Lobesia botrana. The main pheromone component has been used to monitor the flight period of males and to disrupt mating as a method of pest control. The experiment on European vine moth control using mating disruption technique was conducted in vineyard (2,5 ha) with sensitive cv. Riesling during 2014 and 2015 growing season. The efficacy of two commercial pheromone preparations: Isonet C Plus and Isonet L+E, in comparison to standard pesticide program (indoxacarb, chlorpyriphos -methyl), was evaluated on the base of number of moth caught in pheromone traps, percentage of damaged flowers and fruits of grape (first and second generations), and a fungal infection caused by Botrytis cinerea. Isonet L Plus and Isonet L+E mating disruption method proved to be very effective against European vine moth in Medjimurje vineyards region