Comparative Efficacy of Pesticides against Aphid (Brevicoryne Brassicae Lipaphis Eyrsimi) on Raya (Brassica Juncea) Crop under Arid Conditions Research Article
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Abstract
The experiments were conducted to evaluate the efficacy of different insecticides for the control of aphids in the raya crop at the Adaptive Research Farm, Koror, District. Layyah, Punjab. Pakistan and a farmer’s field, i.e. Chak no. 115/TDA, Tehsil. Karor, Layyah, Pakistan, under irrigated conditions during the rabi crop season 2023-24. The experiments were laid out in Randomized Complete Block. Design (RCBD) with three replications with a plot size of 5 m x 0.9 m, along with row spacing of 45 cm. The pesticide Legend (metrin) 20 EC @ 740 ml ha-1found best against aphid and yield parameters on raya crop. Five different pesticides, including T1. Control. T2, Confidor (imidacloprid) 25 WP @ 500 g ha-1, T3. Legend (metrin) 20 EC @ 740 ml ha-1, T4. Plenum (pymetrozine) @ 200 g ha-1, and T5. Talstar (bifenthrin) @ 370 ml ha-1 were applied. All insecticides significantly decreased aphid population over control and maximum grain yield 1860.16 kg ha-1 and 1562.10kgha-1 in both locations at AR farm Karor as well as the farmer’s field, respectively, whereas Confidor (imidacloprid) 25 WP @ 500 g ha-1 was applied. Maximum mortality one day (24hours), two days (48 hours) and 3 days (72 hours) after spray was caused by Confidor (imidacloprid) 25 WP @ 500 g ha-1. It is thus recommended that Confidor (imidacloprid) 25 WP @ 500 g ha-1may be applied for offering control of aphid and increased grain yield of raya in both locations.
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