Evaluation of bio-pesticides against ladybird beetle, Coccinella transversalis (Fabricius) in high density planting (HDP) of Bt cotton.

Abstract

The present study entitled “Evaluation of bio-pesticides against ladybird beetle, Coccinella transversalis (Fabricius) in high density planting (HDP) of Bt cotton” was undertaken at Agricultural farm of College of Agriculture, Dhule (Maharashtra)- 424004 during Kharif-2023. The experiment was designed using a Randomized Block Design, incorporating eight treatments and three replications. The variety selected for this study was “RCH-659 BG II”. A total of eight treatments were used in the current investigation, which included Lecanicillium lecanii 1.15% WP @ 2500g ha-1, Metarhizium anisopliae 1.15% WP @ 2500g ha-1, Beauveria bassiana 1.15% WP @ 2500g ha-1, Lecanicillium lecanii 1.15% WP @ 5000g ha-1, Metarhizium anisopliae 1.15% WP @ 5000g ha-1, Beauveria bassiana 1.15% WP @ 5000g ha-1, Neem oil 10000 ppm @ 1000ml ha-1 and untreated Control. Regarding the effectiveness of the all of them demonstrated a little impact on the population of Coccinellids. and L. lecanii 1.15% WP @ 2500g ha-1 was recorded the highest population of beetles and proved safer as compared to other biopesticides.