Bhute, N.K.NANDWALKAR TEJAS SHAMKUMAR2024-07-092024-07-092024https://krishikosh.egranth.ac.in/handle/1/5810211612The present study entitled, “Evaluation Of Thiamethoxam 12.6% + Lambdacyhalothrin 9.5% Zc Against Pink Bollworm (Pectinophora Gossypiella Saunders) In Bt Cotton Through Drone Application” was carried out at, AICCIP, MPKV, Rahuri-413 722 during kharif-2022. An investigation was undertaken with an objective of, to evaluate the effect of Thiamethoxam 12.6% + Lambda-cyhalothrin 9.5% ZC insecticides against cotton pink bollworm through drone application, to assess the phytotoxicity of Thiamethoxam 12.6% + Lambda-cyhalothrin 9.5% ZC through drone application, to study the effect on natural enemies. The results revealed that among the tested insecticidal treatments, the treatment Thiamethoxam 12.6% + Lambda-cyhalothrin 9.5% ZC @88 gm a.i./ha through drone application was recorded lowest rosette flower (4.52%), green boll damage (7.21 %), pink bollworm larvae (2.01/20 bolls). At harvest, the treatment recorded less open boll damage (7.15 %) and locule damage (3.48 %) and the treatments @88 gm a.i./ha through knapsack, @66 gm a.i./ha and @44 gm a.i./ha through drone found at par with it which had a non-significant difference among them. Among tested insecticidal treatments, the treatment Thiamethoxam 12.6% + Lambda-cyhalothrin 9.5% ZC @88 gm a.i./ha through drone application recorded highest yield of seed cotton (19.45 q/ha) and had non-significant difference with @88 gm a.i./ha through Knapsack, @66 gm a.i./ha and @44 gm a.i./ha through drone Among different treatments the highest ICBR i.e. 1:17.75 was registered in the treatment @44 gm a.i./ha through knapsack followed by @44 gm a.i./ha through drone (1:16.01).EnglishThesis