Efficacy of fungicides alone and in combination with insecticides on foliar diseases of onion (Allium cepa) in rabi season
374 / 260
Authors
-
R.C. GUPTA* and R.P. GUPTA
Keywords:
Incidence, intensity, management, onion, stemphylium blightAbstract
trial was conducted on onion variety Agrifound Light Red to test the combined efficacy of fungicides and insecticides on foliar diseases of onion during rabi, 2010-11, 2011-12 and 2012-13 at Research Farm, Chitegaonphata, National Horticultural Research and Development Foundation (NHRDF), Nashik. The fungicides namely mancozeb @ 0.25%, propiconazole @ 0.1%, copper oxychloride @ 0.25%, tricyclazole @ 0.1% and hexaconazole @ 0.1% were tested alone and in combination with insecticides namely methomyl @ 0.8g/L, carbosulfan @ 2ml/L and profenofos @ 1ml/L in the present study. The pooled data of three years revealed that, maximum percent disease control of stemphylium blight (59.81%) as well as highest gross yield (326.60q/ha) and marketable yield (317.44q/ha) of onion was recorded with combined spray of mancozeb @ 0.25% + methomyl @ 0.8g/L at 30 DAT, propiconazole @ 0.1% + carbosulfan @ 2ml/L at 45 DAT and copper oxychloride @ 0.25% + profenofos @ 1ml/L at 60 day after transplanting (DAT). The maximum increase in marketable yield (31.64%) of onion bulbs was also recorded in the same treatment over untreated check. The highest incidence (36.67%) of stemphylium blight and lowest gross (248.10q/ha) as well as marketable yield (239.89q/ha) of onion were recorded in untreated check. Purple blotch and Colletotrichum blight did not appear during the entire cropping season in onion crop. The study revealed that combined sprays of fungicides and insecticides effectively managed the stemphylium blight disease as well as increased yield of onion bulbs during rabi season under Nashik area of Maharashtra.
Downloads
Issue
Section
License
For Authors
As soon as an article is accepted for publication, authors are requested to assign copyright of the article (or to grant exclusive publication and dissemination rights) to the publisher (Indian Phytopathlogical Society). This will ensure the widest possible protection and dissemination of information.
For Readers
While the advice and information in this journal is believed to be true and accurate at the date of its publication, the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may have been made. The publisher makes no warranty, express or implied, with respect to the material contained herein.
All articles published in this journal are protected by copyright, which covers the exclusive rights to reproduce and distribute the article (e.g., as offprints), as well as all translation rights. No material published in this journal may be reproduced photographically or stored on microfilm, in electronic data bases, on video disks, etc., without first obtaining written permission from the publisher. The use of general descriptive names, trade names, trademarks, etc. in this publication, even if not specifically identified, implies that these names are protected by the relevant laws and regulations.