Original scientific paper

First appearance, damage and experiences with walnut husk fly (Rhagoletis completa Cresson) control in Medjimurje region

Milorad Šubić ; Savjetodavna služba, Podružnica Međimurske županije, Čakovec
Božena Barić ; Agronomski fakultet Zagreb, Zavod za poljoprivrednu zoologiju, Hrvatska
Ivana Pajač Živković ; Agronomski fakultet Zagreb, Zavod za poljoprivrednu zoologiju, Hrvatska
Miklós Tóth ; MTA ATK Növényvédelmi Intézet, Budimpešta, Mađarska
Erzsébet Voigt ; Állami Gyümölcs- és Dísznövénytermesztési Kutató Fejlesztő Nonprofit Közhasznú Kft., Budimpešta

Abstract

In Croatia walnut husk fly (WHF) was first recorded in 2004, in Istria, close to the Croatian – Slovenian – Italy border (north-west part of the country). Seven years later, on the beginning of August, WHF was first observed in northern part of country (Medjimurje region), close to the Croatian – Slovenian – Hungary border. Rhagoletis completa in an economically important fruit fly, which attacks several species of walnuts (Juglans spp.). The best method for trapping the walnut husk fly adults is a yellow sticky board with ammonium carbonate as an attractant. During the years 2011, 2012 and 2013, the seasonal dynamics of the WHF have been assessed at three locations (Banfi- Štrigova, Mursko Središće and Šenkovec), using Csalomon yellow sticky traps (30 x 20 cm) with attractant. Extremely numerous WHF populations were recorded in 2012 and 2013, from the second half of August to the beginning of September. When the weekly catch of WHF adults was greater than 60 individuals per traps, we observed the infection of fruits greater than 50 %. Yield walnut kernel was thereby decreased by 19.19 % to 19.65 %. Due to the high identification measures are needed to protect walnut trees from WHF. The nuts infestation nuts was reduced by using Success Bait KS (spinosad + bait) (3 %, 3 times) control.

Keywords

walnut husky fly; Rhagoletis complete; Csalomon yellow sticky traps; chemical control

Hrčak ID:

169280

URI

https://hrcak.srce.hr/169280

Publication date:

1.6.2014.

Article data in other languages: croatian

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