Efficacy of safer insecticides against aphid on celery

DOI: 10.18805/ag.D-4854    | Article Id: D-4854 | Page : 70-72
Citation :- Efficacy of safer insecticides against aphid on celery.Agricultural Science Digest.2019.(39):70-72
Ravinder Singh Chandi and B.S. Gill rschandi@pau.edu
Address : Department of Entomology, Punjab Agricultural University, Ludhiana-141 027, Punjab, India.
Submitted Date : 5-12-2018
Accepted Date : 15-01-2019

Abstract

Aphids (Myzus persicae) are one of the most important pest of celery, which is cultivated for its fleshy leafstalks, seeds and essential oil. Aphids suck sap from the plant and reduce yield. Also, they transmit viral diseases and contaminate celery produce with honeydew. Some safer insecticides namely flonicamid 50 WG @ 150, 175 and 200 g/ha, imidacloprid 200 SL @ 75, 100 and 125 ml/ha, thiamethoxam 25 WG @ 75, 100 and 125 g/ha and acetamiprid 20 SP @ 37.5, 50 and 62.5 g/ha were evaluated for their efficacy against aphids. Population of aphids per inflorescence before spray varied from 12.03 to 13.20. All the treatments were significantly better than control. On all observation dates flonicamid @ 175 and 175 and 200 g/ha, imidacloprid @ 100 and 125 ml/ha, thiamethoxam @ 100 and 125 g/ha, acetamiprid @ 50 and 62.5 g/ha were statistically better in reducing aphid population than other treatments. Highest seed yield of 11.30 q/ha was obtained with flonicamid50 WG @ 200 g/ha which was statistically at par with imidacloprid 200 SL @ 100 and 125 ml/ha, thiamethoxam 25 WG @ 100 and 125 g/ha and acetamiprid 20 SP @ 50 and 62.5 g/ha and flonicamid50 WG @ 175 g/ha.

Keywords

Aphids Celery Insecticides Myzus persicae.

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