Naslov
Monitoring the appearance and possibility for prevention of the apple sawfly in Croatia

Autori
Ciglar, Ivan ; Barić, Božena

Izvornik
Journal of Pest Science (1436-5693) 75 (2002), 2; 41 - 46

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
apple saw fly; monitoring; insecticides; Hoplocampa testudinea
(apple sawfly; monitoring; insecticides; Hoplocampa testudinea)

Sažetak
The apple sawfly, Hoplocampa testudinea Klug has recently become a widespread pest in Croatia apple orchards. It causes severe damage in the blooming period due to the fact that infested fruit fall off. This article shows results collected over three years of field research on trap catches of sawflies, the period of laying eggs, the appearance of larvae and detection of damage. In the climate of northwestern Croatia, adult sawfly appear in April during the blooming period of the early apple variety of Idared. By monitoring temperatures from January 1, adults were detected when the thermal constant reached 210 day-degrees. Our observations showed that the larvae emerged when the sum of thermal constants reached ca. 110 day-degrees. The investigation of effective control strategies with insecticides showed high efficacy of thiametoxam (Actara), imidacloprid (Confidor), thiacloprid (Calypso) and betacyfluthrin + oxydemeton-methyl (Enduro) and lower efficacy of phosalone (Zolone), chlorpyrifos-methyl (Reldan), and lambda cyhalothrin (Karate).

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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