EVALUTION OF BIOCONTROL AGENT BACILLUS SUBTILIS B5 FOR CONTROL OF PHYTOPHTHORA INFESTANS ON POTATO LEAVES


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Authors

  • V Sunaina
  • S Ajay

Abstract

Foliar infection during five days period of incubation at 18°C and humidity above 90% revealed no appearance of Phytophthora infestans lesions till 96 h of incubation where five leaflets in each set were abaxially sprayed with 106 cfu/ml suspension of biocontrol agent Bacillus subtilis B5 and 0.2% concentration of a mancozeb + metalaxyl formulation. The leaflets in control set exhibited average infection severity index of 1.8 and 3.8 after 72 and 96 h of incubation, respectively. After 120 h of incubation, the average infection severity index of 0.6 and 0.2 was recorded in bca B5 and fungicide formulation sprayed leaves compared to control where infection severity index of 4.0 to 5.0 was recorded in foliar tissues of all the five leaflets of a set resulting in an average infection severity index of 4.8.

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Author Biography

  • S Ajay
    Central Potato Research Institute Campus, Modipuram-250 110, UP, India

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Issue

Vol. 34 No. 1 - 2 (2007)

Section

Articles

License

The copyright of the articles published in Potato Journal is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

Sunaina, V., & Ajay, S. (2013). EVALUTION OF BIOCONTROL AGENT BACILLUS SUBTILIS B5 FOR CONTROL OF PHYTOPHTHORA INFESTANS ON POTATO LEAVES. Potato Journal, 34(1 - 2). https://epubs.icar.org.in/index.php/PotatoJ/article/view/33089