Evaluation of Botanicals Against Colocasia Blight Caused by Phytophthora colocasiae Raciborski

Authors

  • Divya Bhandhari Department of Plant Pathology, CSK Himachal Pradesh Vishvavidyalaya, Palampur-176 062
  • Amar Singh Department of Plant Pathology, CSK Himachal Pradesh Vishvavidyalaya, Palampur-176 062

Keywords:

Colocasia, Botanicals, Colocasia Blight, <i>Phytophthora colocasiae</i>.

Abstract

Colocasia leaf blight is the most devastating disease of colocasia incited by oomycetous pathogen Phytophthora colocasiae Raciborski. Use of chemicals in the management of this disease may lead to health and ecological hazards thus in the present investigation, the efficacy of botanicals were evaluated both under in-vitro and in-vivo conditions against colocasia blight. Four different botanicals which included leaf extracts of Azadirachta indica (neem), Melia azedarach (drek) and botanical formulations of lantana ark and dashparni were evaluated against P. colocasiae at four concentrations ( 5, 10, 12 and 15 per cent). Lantana ark was found to be most effective under in-vitro as well as in-vivo conditions at 15 per cent concentration resulting in 72.3 per cent mycelial growth inhibition and 65 per cent disease control, respectively followed by Azadirachta indica.

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Published

2021-06-30

How to Cite

Bhandhari, D., & Singh, A. (2021). Evaluation of Botanicals Against Colocasia Blight Caused by <i>Phytophthora colocasiae</i> Raciborski. Himachal Journal of Agricultural Research, 47(1), 125–128. Retrieved from https://hjar.org/index.php/hjar/article/view/166083

Issue

Section

Short Communication

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