Vol. 6, Issue 6 (2018)
In vitro evaluation of phyto-extracts in the management of Myrothecium leaf blight of cotton incited by Myrothecium roridum
Author(s): T Umamaheswari, SK Beura and DS Mary
Abstract: The Myrothecium leaf blight disease of cotton incited by Myrothecium roridum is causing losses in significant proportions in many cotton growing tracts of Odisha. Considering the importance and emerging scenario of the disease, management studies have been conducted for the control of the disease in an environmentally sustainable manner. The efficacy of Twelve plant extracts viz. Azadirachta indica, Allium cepa, Ocimum sanctum, Aegle marmelos, Allium sativum, Cymbopogan flexiosus, Lantana camara, Ipomoea batatus, Pongamia pinnata, Nyctanathes arbortristis, Eucalyptus citriodora and Mentha arvensis were evaluated under in-vitro at 10% and 20% concentrations by Poison food technique. The study revealed that all the plant extracts at both the concentrations were significantly superior in reducing the growth of Myrothecium roridum as compared to control. At 10% concentration Nyctanathes arbortristis was proved to be effective and recorded maximum reduction of growth by 74% and the least reduction of growth was recorded by Aegle marmelos i.e. 5.8%. At 20% concentration the cent per cent growth inhibition was recorded in plant extract of Mentha arvensis followed by Nyctanathes arbortristis with an inhibition of 79.8% at 20% concentration. The least inhibition was recorded by Cymbopogan flexiosus 48.6%.
Pages: 571-574 | 432 Views 82 Downloads
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How to cite this article:
T Umamaheswari, SK Beura, DS Mary. In vitro evaluation of phyto-extracts in the management of Myrothecium leaf blight of cotton incited by Myrothecium roridum. Int J Chem Stud 2018;6(6):571-574.
