Učinkovitost konfuzije u suzbijanju jabukova savijača u Hrvatskoj s posebnim osvrtom na troškove zaštite

Istraživanje metode konfuzije jabukova savijača pomoću Isomate C TT dispenzora proizvođača HIN ETSU® u dozi od 500 dispenzora po hektaru + 50 komada za rubno pojačanje provedeno je u voćnjaku jabuke u Nedelišću (Međimurje) 2017. godine. Metoda konfuzije primijenjena je na 2 ha voćnjaka, 1ha ispod protugradne mreže i 1 ha izvan protugradne mreže. Ocjena učinkovitosti konfuzije i standardnog programa u kojemu je zaštita od savijača obavljena u 6 tretiranja insekticidima obavljena je u vrijeme zrelosti sorte Idared. Cijena dispenzora za konfuziju iznosila je 2.296,25 HRK, međutim gubitci jabuke iznosili s u prosjeku 2.500 kg ili 5.000 HRK po hektaru. Na standardu uz 6 tretiranja insekticidima gubitak je iznosio 635 kg ili 1.270 HRK po hektaru. Na netretiranoj površini gubitak je iznosio 8.500 kg ploda ili 17.000 HRK. Najveća učinkovitost u zaštiti od savijača postignuta je s 92,65% na standardnom dijelu voćnjaka, dok je učinkovitost na konfuziji iznosila 67,65% i 73,53% što nije ekonomski opravdano s obzirom na troškove zaštite i gubitke plodova prve klase. Istraživanjem je potvrđeno da se konfuzija jabukova savijača mora kombinirati s primjenom dva insekticidna tretmana koji bi povećali učinkovitost i rentabilnost proizvodnje jabuke. Investigation into mating disruption method in the control of codling moth by using Isomate C TT dispensers (SHIN ETSU®) with a dose of 500 dispensers per hectare + 50 dispensers for edge reinforcement was carried out in the apple orchard Nedelišće (Međimurje) in 2017. The mating disruption method was applied on 2 hectares of orchard, 1ha below antihail nets and 1 ha out of the antihail net. An assessment of the effectiveness of mating disruption and the standard program in which protection was carried out by applying 6 insecticides was carried out at harvest time of apple cultivar ‘Idared’. The survey shows the cost f dispensers per hectare and the average price of applied insecticides, as well as the economic losses expressed in terms of yield (kg of fruits) and in the national currency (HRK) per experiment variant per hectare. The highest protection efficacy was achieved with 92.65% in the standard part of the orchard, and the efficacy on mating disruption was 67.65% and 73.53%, which is not economically justified with regard to the costs of protection and firstclass fruit losses. The investigation confirmed that the mating disruption method must be combined with the application of two insecticide treatments to increase the e