Management of leaf blight of chrysanthemum caused by Alternaria alternata in Northern Karnataka

Authors

  • M.R. RAVIKUMAR*, K.B. YADAHALLI AND YASHASWINI SHARMA

Keywords:

Alternaria alternate, chrysanthemum, leaf blight, fungicides

Abstract

Chrysanthemum (Chrysanthemum morifolium Ramat.) is an important commercial flower crop used mainly as loose flower in domestic market and as a popular cut flower in the world market. The plant is being affected by leaf blight caused Alternaria alternata (Fries) Keissler, a serious disease directly affecting the flower yield. Hence a study on field screening of chrysanthemum against leaf blight was taken up during 2014-2015 at farmers field with six chemicals viz,  Tebuconazole @0.1%, Propiconazole @ 0.1%, Difenconazole @ 0.1%, Hexaconazole @ 0.1% , Chlorothalonil @ 0.2% and Mancozeb @ 0.2%. Four sprays were taken up at 10 days interval with each fungicide. Among the different treatments, the plants sprayed with Tebuconazole, Propiconazole and Difenconazole @ 0.1% were found effective in controlling the leaf blight disease and recorded lowest disease index (5.12 per cent, 5.38 per cent, 6.75 per cent disease index, respectively) when compared to control (57.26 per cent disease index) after the forth spray. Highest yield (72.55 q/ha) was recorded with Tebuconazole treated plants followed by Propiconazole treatment (70.25 q/ha) and Difenconazole treatment (69.30 q/ha) and the least yield (51.35 q/ha) was recorded with untreated control.

Downloads

Issue

Vol. 69 No. 4s (2016): Indian Phytopathology : Special Issue

Section

Research Articles

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.

How to Cite

YASHASWINI SHARMA, M. R. K. Y. . A. (2016). Management of leaf blight of chrysanthemum caused by Alternaria alternata in Northern Karnataka. Indian Phytopathology, 69(4s), 384-386. http://epubs.icar.org.in/ejournal/index.php/IPPJ/article/view/71337