The efficacy of novel diamide insecticides in Grapholita molesta suppression and their residues in peach fruits

Abstract

The oriental fruit moth [(Grapholita molesta (Busck, 1916)] represents one of the most significant and destructive pests of peaches in Serbia and worldwide. Its susceptibility to the novel diamide insecticides, cyantraniliprole and chlorantraniliprole, was assessed in this article. The dissipation dynamics and behaviour of these insecticides in the peach fruit were also determined. Field trials were carried out at two localities in the Republic of Serbia (Čerević, Mala Remeta), according to standard EPPO methods. The cyantraniliprole <br />(100 g a. i./l, SE) and chlorantraniliprole (200 g a. i./l, SC) based products were foliar applied at rate of 0.6 and 0.2 l/ha, respectively. The efficacy of the applied products was evaluated by counting the number of fruits damaged by the G. molesta larvae. The high efficacy of cyantraniliprole (89.5–94.1%) and chlorantraniliprole (93.5–95.6%) was achieved at both localities. Right after the drying of the deposit, the concentration of cyantraniliprole in the peach fruits was at the EU maximum residue level (MRL) of 1.5 mg/kg, while the MRL level of 1 mg/kg was achieved after seven days (0.95 mg/kg) for chlorantraniliprole. The cyantraniliprole and chlorantraniliprole half-life dissipation in the peach fruit were 2.50 and 3.15 days. It can be concluded that the high efficacy of the researched insecticides is a good indicator of G. molesta susceptibility in peach orchards.

Improvement of pest control in stone fruits within an areawide strategy

“…Las poblaciones de G. molesta han mostrado una alta susceptibilidad hacia diferentes principios activos, como lo son spinetoram, metaflumizone, novaluron, tebufenozide, phosmet, pyriproxyfen, cyantraniliprole y chlorantraniliprole (6) (7) . Por lo tanto, los pesticidas cumplieron un rol en las producciones agrícolas consistente con su origen, ya que fueron concebidos como una herramienta para asegurar el bienestar humano (8) .…”

Molecular characterization and functional analysis of a beta‐1,3‐glucan recognition protein from oriental fruit moth Grapholita molesta (Lepidoptera: Tortricidae)

“…The oriental fruit moth, Grapholita molesta (Busck), is a severe pest of tree fruits, widely distributed throughout the fruit‐growing areas of the world (Bisognin et al, 2012; Kong et al, 2019; Myers et al, 2006; Ricietto et al, 2016; Timm et al, 2008; Zunic et al, 2020). It is hard to control with traditional chemical methods, due to the larvae bored the inside of fruit or stem (Kim et al, 2011).…”

Reverse chemical ecology guides the screening for Grapholita molesta pheromone synergists

“…1 Like most pest insects, OFM is controlled primarily by using pesticides. 2,3 However, there has been a rising concern about the environmental risks and public health problems caused by the overuse of pesticides. [4][5][6][7] To reduce pesticide use while maintaining acceptably low crop damage levels, chemical ecologists have developed environmentally friendly pest management strategies by regulating insect behaviors.…”

“…The oriental fruit moth (OFM) Grapholita molesta (Busck) is a global pest of stone and pome fruits 1 . Like most pest insects, OFM is controlled primarily by using pesticides 2,3 . However, there has been a rising concern about the environmental risks and public health problems caused by the overuse of pesticides 4–7 .…”