Journal of Plant Pathology & Microbiology

Abstract

Evaluation of AKU-PLUS insecticide against Tomato Leaf Miner, Tuta absoluta (Meyrick) (Gelechiidae: Lepidoptera)

Zerhun Tomas Lera*

Tuta absoluta is a serious major economic pest of tomato all over the world which can cause up to 100% yield loss in uncontrolled situation. In study areas Tuta absoluta seriously constrained tomato fruit yield during growing periods. Field experiment was conducted to verify the effectiveness of the AKU-PLUS insecticide (Emamectin benzoate 5% +Lufenuron 12% WDG) relative to another promising standard insecticide, Focus 5% EC (Lambda-cyhalothrin 5% EC), for the management of tomato leaf miner. The experiment was conducted at around Wolaita zone in two districts (Humbo and Kokate) in Southern Ethiopia on farmers’ field in a Randomized Complete Block Design (RCBD) with five replications during 2023 cropping season. Evidence obtained from the verification trial showed that AKU-PLUS (Emamectin benzoate 5%+Lufenuron 12%) at the rate of 200 g/ha with 400 liter of water acted significantly in reducing the infestation of Tuta absoluta larva per plant and consequently increased fruit yield of tomato as compared to the standard check (Focus 5% EC) and unsprayed checks in both locations. Moreover, AKUPLUS was found to be effective and showed a long-lasting effect by controlling and minimizing Tuta absoluta larva per plant when compared with Focus 5% EC on both locations at two application rounds. During the growing periods, no foliar toxic effect was observed from the effect of any tested insecticides. The result also exhibited that plots sprayed with AKU-PLUS showed highest percent efficacy and lowest Tuta absoluta larva population as compared to the Focus 5% EC and unsprayed checks though statistically significant (p<0.05) difference. However, it needs further investigation for the interval and frequency.

Published Date: 2025-06-22; Received Date: 2024-09-22