Management of Sclerotinia rot of rapeseed-mustard through integrated pest management


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MANAGEMENT OF SCLEROTINIA ROT OF RAPESEED-MUSTARD THROUGH IPM

Authors

  • ASHOK KUMAR Shivalik Agricultural Research and Extension Centre, Kangra-176 001, Himachal Pradesh
  • S SHARMA Shivalik Agricultural Research and Extension Centre, Kangra-176 001, Himachal Pradesh
  • A KATOCH Shivalik Agricultural Research and Extension Centre, Kangra-176 001, Himachal Pradesh

https://doi.org/10.56739/jor.v32i1.141823

Keywords:

Botanicals, IPM, Rapeseed-Mustard, Resistance, Sclerotinia rot, Trichoderma

Abstract

In vitro studies revealed maximum mycelial growth inhibition (98.5%) of Sclerotinia sclerotiorum by
Trichoderma koningii isolate JMA-11 followed by DMA-8 (90.4%). Extract of Vitex negundo and Melia azedarach showed 100 per cent and 98.3 per cent inhibition ofmycelial growth of S. sclerotiorum at 5% concentration followed by 96.7 per cent and 91.7 per cent growth inhibition at 2.5% concentration, respectively. At 1% concentration, 57.6 per cent growth inhibition of the pathogen was shown by Melia azedarach followed by 55.6 per cent inhibition with Vitex negundo. Fifty nine genotypes of rapeseed-mustard screened under artificial field conditions showed lack of the resistance to S. sclerotiorum. However, ten genotypes viz., NRCG-104, NRC-DR-603, HC-0213, HC-0212, HC-9603, HC-9605, BCRS-17, Pusa Swarnim, Kiran, and PBC-9221 belonging to Brassica carinata were found to be moderately susceptible. In the integrated disease management, a combination of row spacing 45 cm, 2-3 lower leaf removal at 80 and 100 days after sowing and one spray of companion (0.2%) was found to be best treatment in reducing the disease incidence of Sclerotinia rot in Brassica napus.

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Submitted

2023-09-01

Published

2015-12-31

How to Cite

ASHOK KUMAR, S SHARMA, & A KATOCH. (2015). Management of Sclerotinia rot of rapeseed-mustard through integrated pest management: MANAGEMENT OF SCLEROTINIA ROT OF RAPESEED-MUSTARD THROUGH IPM. Journal of Oilseeds Research, 32(2). https://doi.org/10.56739/jor.v32i1.141823