9th International Entomopathogens and Microbial Control Congress, Trabzon, Türkiye, 28 - 31 Ekim 2024, ss.122, (Özet Bildiri)
In this study, the Fall webworm (Hyphantria cunea Drury, Lepidoptera: Arctiidae), an insect is
native to North America, is a polyphagous pest that is frequently seen in the Black Sea and
Marmara Regions of our country. The effectiveness and shelf life of the local viral prototype
product of baculovirus origin, which we developed in our previous studies in the control against
this pest, were investigated under field conditions. The formulation was prepared by
propagating the Hyphantria cunea granulovirus (HyvuGV-Hc1) isolate. Field trials were
conducted in Trabzon province of the Eastern Black Sea Region in 2022 and 2023. The viral
formulation was tested in the field on mulberry, hazelnut, and walnut host plants against H.
cunea larvae at concentrations of 2 × 108, 2 × 107, and 2 × 106 OB/ml. AGREE 50 WG
(IMPORTED) containing 50% Bacillus thuringiensis active ingredient, used against H. cunea,
was used as comparison product. As a result of field trials, the most damage was caused to the
mulberry plant, followed by hazelnuts and walnuts. At the highest concentration, mortality rates
were determined as 85.42%, 80.85% and 79.59% in mulberry, hazelnut and walnut plants,
respectively. Among the host plants, the most damage was caused to the mulberry plant,
followed by hazelnuts and walnuts. In the comparison drug, the attrition rate was observed to
be less than in the control group. In the shelf-life study, it was observed that formulation
products prepared for different periods (0, 6 and 12 months) had similar mortality effects.
Compared to the control groups, the local viral prototype product was found to have a
significant potential in the control against H. cunea in the field.