Investigation on the Efficacy of Different Groups of Insecticides on Rose Plume Moth, Eucnaemidophorus rhododactylus

One of the important rose pests in Lyzangan region is Rose plume moth, Eucnaemidophorus rhododactylus Den. & Schiff. (Lepidoptera: Pterophoridae), which causes extensive damage to some kinds of rose shrubs annually. Therefore, it is essential to control the pest to prevent damage and the use of chemical insecticides has been the main method for this purpose in Iran during the last decades. In this study the efficacy of biortional insecticides was evaluated against Rose plume moth. The experiment was carried out based on Randomized Complete Block Design (RCBD) with 7 treatments including spinosad (Tracer® SC 24%) at the concentrations of 100 and 700 ml/ha, abamectin (Vertimec® EC 1.8%) at 600 ml/ha, indoxacarb (Avant® SC 15%) at 250 ml/ha, fenoxycarb + lufenuron (Lufox® EC 10.5%) at 1500 ml/ha, Bacillus thuringiensis (produced by Italy) at 1000 ml/ha and control (water spraying) in 4 replications during 2018 and 2019. The pest population was recorded one day before and 7, 10, 15 and 20 days after the treatment. The Percent efficacy was calculated using Henderson and Tilton method. The results show that in all sampling stages and during the two consecutive years, spinosad at the rate of 700 ml/ha, with 92.5 ± 2% efficacy was placed in group1 and at the rate of 100 ml/ha with 67.6± 1% mortality rate was placed in the second group and showed the highest control level. Indoxacarb (48±1%), abamectin (45±1%) and Lofux® (43±1%) were placed in the third and Bt (37±1%) was placed in the fourth group. Spinosad (700 ml/ha) showed the highest efficacy against the larvae and therefore could be recommended for the chemical control of E. rhododactylus in rose gardens.