Vol. 12, Issue 10 (2023)

Author(s):
Abhinav Tiwari, Prashant Mishra, Ramji Singh, Ravi Kumar and Ankita

Abstract:
An in-vitro study was conducted to check the antagonistic activities of different plant extract in order to reduce the mycelial growth of Rhizoctonia solani Kuhn, which is responsible for causing the disease “Web blight of Blackgram”. Which is considered one of the major disease of Blackgram causing yield loss. For the experiment different plant extract such as, Garlic clove, Ocimum leaf, Carom seed, Calotropis leaf extract & Neem leaf extract. Plant extract was mixed with PDA at the concentration of 5% and 10% in 90 mm petri plate to check the antagonistic activity and growth of pathogen. The mycelial growth was taken at the interval of 24 hrs, 48 hrs, 72 hrs. In this experiment maximum percent growth inhibition was observed in extract of Carom seeds (100%) @ concentration of 5% and 10% both then Garlic cloves @ 10% (100%), which was further followed by Calotropis leaf extract (91.11) @ 10% conc., Neem leaf extract (87.03%) @ 10%, Ocimum extract (76.30) @ 10% conc.