Exploration of Botanicals Against Microdochium Oryzae, Causal Agent of Leaf Scald Disease of Rice

Akshata C Murudkar; J J Kadam; H D Pawar; S C Rite; R A Raut; M S Joshi

doi:10.48165/jpds.2023.1801.11

Authors

Akshata C Murudkar Department of Plant Pathology, Dr. Balasaheb Konkan Krishi Vidyapeeth Dapoli, Dist. Ratnagiri-415 712 Maharashtra
J J Kadam Department of Plant Pathology, Dr. Balasaheb Konkan Krishi Vidyapeeth Dapoli, Dist. Ratnagiri-415 712 Maharashtra
H D Pawar Department of Plant Pathology, Dr. Balasaheb Konkan Krishi Vidyapeeth Dapoli, Dist. Ratnagiri-415 712 Maharashtra
S C Rite Department of Plant Pathology, Dr. Balasaheb Konkan Krishi Vidyapeeth Dapoli, Dist. Ratnagiri-415 712 Maharashtra
R A Raut Department of Plant Pathology, Dr. Balasaheb Konkan Krishi Vidyapeeth Dapoli, Dist. Ratnagiri-415 712 Maharashtra
M S Joshi Department of Plant Pathology, Dr. Balasaheb Konkan Krishi Vidyapeeth Dapoli, Dist. Ratnagiri-415 712 Maharashtra

DOI:

https://doi.org/10.48165/jpds.2023.1801.11

Keywords:

Rice, Leaf scald, Microdochium oryzae, Plantextracts

Abstract

Leaf scald disease, caused by the fungus Microdochium oryzae, is a devastating and widespread disease of rice. In India, the disease has been linked to yield reductions of up to 23.4%. Aqueous extracts of Acorus calamus, Azadirachta indica, Allium sativum, Sapindus mukorossi, Annona reticulate, Lanatana camara, and Ocimum sanctum at 10% concentration were tested in vitro against Microdochium oryzae. According to the findings, Azadirachta indica extract (71.11%) and Sapindus mukorossi extract (59.0%) were the most efficient phyto-extracts for reducing M. oryzae mycelial growth and were statistically superior to other phyto-extracts. Allium sativum extract ranked in third position in terms of suppressing mycelial growth (47.43%). Ocimum sanctum (39.97%) and Annona reticulate (34.44%), the last two botanicals, were the least effective in preventing M. oryzae mycelial growth. These plant extracts can thus be utilized to combat the rice leaf scalddisease.

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