Control of Alternaria porri Causing Purple Blotch of Onion during Kharif Season

C.B. Bachkar, M.N. Bhalekar, S.A. Pawar

Abstract


Purple blotch (Alternaria porri (Ellis)) cif of onion is an important disease causing heavy losses in the yield. The experiment was conducted for three years under field conditions on the management of purple blotch in onion. Among the different fungicidal treatment four sprays of Azoxystrobin 25 SC @ 0.1 percent at 10 days interval with onset of disease gave effective control of purple blotch of onion and better yield. This was followed by four sprays of Tebuconazole 25 EC @ 0.1 percent at 10 days interval with onset of disease and was also equally effective in the management of purple blotch disease of onion. It is suggested to use sticker 0.1% along with fungicide for better efficacy.

Keywords


Allium cepa, Alternaria porri, Purple blotch

Full Text:

PDF

References


Aujla, I. S., Sanjay Goswari, Thind, T. S., Sandeep Raheja & Pardeep Kumar. (2010). Relative effectiveness of fungicides in controlling purple blotch of onion seed crop. Journal of Plant Protection Research, 25(1), 73-74.

Gupta, K. P., Shrivastava, V. K. & Pandey, U. B. (1986). Control of purple blotch disease of onion seed crop. Indian Phytopathology, 39, 303 -304.

Gupta, K. P., Shrinivastava V. K. & Pandey, U. B. (1994). Disease and insect pests of onion in India. International symposium on Alliums for the Trop I-lort, 35, 265 - 269

More, V. N. (1997). Efficacy of different insecticides against onion thrips (Thrips tabaci) Journal of Maharashtra Agricultural Universities, 23(1), 69-70.

Memane, S. A., Khetmalas M. B., Pawar D. B. & Warade, S. D. (2001). Management of leaf blight and thrips of onion during rainy season. Journal of Maharashtra Agricultural Universities, 26 (3), 347-349.

Pudule, D. N. & Utikar, P. G. (1977). Evaluation of fungicides for the control of Alternaria blight of onion. Madras Agricultural Journal, 64, 693-694.

Raja, J., Rajendra, B., Sachithanandam, K. & Pappiah, C. M. (2000). Management of thrips and leaf spot disease in onion. Vegetable Sciences, 27 (1), 80 - 81.

Sharma, S. R. (1986). Effect of fungicidal sprays on purple blotch and bulb yield of onion. Indian Phytopathology, 39, 75-82.

Shrivastava, K .J., Quadri, S. M. H., Tiwari, B. K., Bhonde S. R. & Pandey, U. B. (1991). Chemical control of purple blotch of onion bulb crop; in kharif season. Indian Phytopathology, 44, 251-253.

Thind, T. S. & Jhooty, J. S. (1982). Association of thrips with purple blotch infection on onion plants caused by Altemaria porri. Indian Phytopathology, 35, 696-698.


Refbacks

  • There are currently no refbacks.


Online ISSN: 2581-9127