Vol. 11, Issue 9 (2022)

Author(s):
Akshata C Murudkar, JJ Kadam, UR Phondekar, VP Kharbadkar and AN Mayekar

Abstract:
In the present field experiment, two botanicals (Neem leaf extract @ 10% and Soap nut extract @ 10%), two bio-agents (Pseudomonas fluorescens @ 5g / lit and Trichoderma viride @ 5g / lit) and three fungicides (Copper oxychloride 50%WP @ 0.25%, Carbendazim 12% + Mancozeb 63% WP @ 0.1% and Propiconazole 25% EC @ 0.1%) which were emerged as the most effective among the evaluated under in vitro study which were further tested for their efficacy under natural epiphytotic condition in the field. The results of field trail revealed that, maximum reduction of 86.03% in leaf scald of rice over control was recorded with two sprays of copper oxychloride 50% WP (0.25%). Carbendazim 12% + mancozeb 63% WP (0.1%) gave 79.63% reduction in disease. These were followed by Pseudomonas fluorescence (5g/lit), propiconazole 25% EC (0.1%), neem extract (10%) and Trichoderma viride (5g/lit), with 78.57%, 62.48%, 52.86% and 47.09% reduction over control, respectively. Soapnut extract was least effective against leaf scald of rice with 45.07 per cent reduction over control, respectively.