Celery plant (Apium graveolens) is cultivated for its fleshy leafstalks and seeds which yield essential oil. Aphids (Myzus persicae) suck sap from 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 12.30 to 16.97. On third and seventh days after spray (DAS) flonicamid @ 175 and 200 g/ha, imidacloprid @ 100 and 125 ml/ha, thiamethoxam @ 100 and 125 g/ha, acetamiprid @ 62.5 g/ha were statistically better in reducing aphid population than other treatments. On tenth DAS 100 per cent mortality was observed in flonicamid @ 200 g/ha, imidacloprid @ 100 and 125 ml/ha, thiamethoxam @ 100 and 125 g/ha and acetamiprid @ 62.5 g/ha and these were statistically at par with acetamiprid @ 50 g/ha and flonicamid @ 175 g/ha. In standard checks malathion 50 EC @ 1000 ml/ha only 55.50 per cent mortality was observed. Highest population of natural enemies mainly coccinellids was recorded in the plots sprayed with flonicamid. Highest seed yield of 12.7 q/ha was obtained with flonicamid @ 200 g/ha which was statistically at par with imidacloprid @ 100 and 125 ml/ha, thiamethoxam @ 100 and 125 g/ha and
acetamiprid @ 62.5 g/ha.
Real Time Impact Factor:
Author Name: Ravinder Singh Chandi and Anureet Kaur
URL: View PDF
Keywords: Aphid, Myzus persicae, celery, safer insecticides.