Studying the efficacy of fipronil (GR 0.2%) against European Mole Cricket, Gryllotalpa gryllotalpa (Orthoptera: Gryllotalpidae)

Abstract

The European Mole Cricket, Gryllotalpa gryllotalpa (Orthoptera: Gryllotalpidae), is a key pest of several crops in different regions of the world, damaging seedlings, roots and tubers. The efficacy of fipronil (Regent ® GR 0.2%) @ 2, 2.5 and 3 g/m 2 along with toxic bait of carbaryl (EC 85%)@ 20 g/m 2 were assessed against this pest in the field based on a completely randomized block design. Based on Henderson-Tilton formula, on the third day after treatment, the efficacy of fipronil @ 2, 2.5 and 3 g/m 2 and carbaryl bait was 16%, 30%, 47% and 53%, respectively; while on the third day after treatment, the efficacy was 22%, 48%, 64% and 81%, respectively. At present, carbaryl application is banned in Iran; therefore, fipronil can be a suitable substitute for this insecticide.

Evaluation of the virulence of entomopathogenic nematodes as a biological control agents against Gryllotalpa gryllotalpa (Gryllotalpidae)

“…The crickets usually damage seedlings, feeding aboveground on foliage or stem tissue and belowground on roots and tubers. Girdling of the stems of seedling plants at the soil surface is a common form of injury, though young plants are sometimes severed and pulled belowground to be consumed (Javadzadeh et al., 2017).…”

“…of the stems of seedling plants at the soil surface is a common form of injury, though young plants are sometimes severed and pulled belowground to be consumed (Javadzadeh et al, 2017).…”