Evaluation of the Efficacy of Novel Insecticides against the Rice Gundhi Bug, Leptocorisa acuta (Thun.) in the Eastern Region of Uttar Pradesh, India
Year: 2025
Type: article
Abstract: The field investigation was carried out to study the evaluation of certain insecticides against rice gundhi bug. The experiment was conducted in a Randomized Block Design with three replications and eight treatments on Rice var. ‘NDR-2065’. It was observed that all treated plots were significantly gave better results over Control (Water Spray). However, among all the treatments minimum bug population was recorded in Thiamethoxam 25 g a.i./ha (0.52 nymphs/adults/hill) treated plots compared to other treatments followed by Fipronil 50 g a.i./ha (0.69 nymphs/adults/hill). Pymetrozine 100 g a.i./ha (0.74 nymphs/adults/hill) was the next best treatment which was at par with Acetameprid 20 g a.i./ha (0.83 nymphs/adults/hill). Azadirachitin 50 g a.i./ha (1.38 nymphs/adults/hill) was least effective treatment but significantly superior to control. Maximum reduction of bug population was observed in Thiamethoxam 25 g a.i./ha (82.6%) followed by Fipronil 50 g a.i./ha, Pymetrozine 100 g a.i./ha and Acetameprid 20 g a.i./ha, having 77.1, 75.3 and 72.3 per cent population reduction. Minimum pest population with the highest grain yield of rice (34.43 q/ha) recorded in treatment T3- Thiamethoxam 25 g a.i./ha followed by Fipronil 50 g a.i./ha recorded 33.27 q/ha yield. Maximum net return was recorded from Thiamethoxam 25 g a.i./ha (Rs. 13433). The benefit cost ratio of different insecticides revealed that Thiamethoxam 25 ga.i./ha (1:14.8) was the most economical treatment followed by Fipronil 50 g a.i./ha (1:4.7) and Acetamaprid 20 g a.i./ha (1:3.4).
Authors: Pradeep Yadav, Vandana Yadav, Abhishek Kumar Yadav, Sourabh Maheshwari, Ashish Rathore, Pankaj Kumar
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W4410096375