DOI: https://doi.org/10.21276/AATCCReview.2025.13.01.168

Abstract

Field studies were conducted during rabi 2022-23 and 2023-24 for the evaluation of different fungicides, namely copper oxychloride 50% WP (1.25%), mancozeb 75% WP (0.25%), metalaxyl 8% + mancozeb 64% WP (0.2%), propineb 70% WP (0.2%), and propiconazole 25% EC (0.1%) as a single spray treatment at 45 and 60 days after sowing, along with a control with no treatment. The susceptible variety Varuna was used as planting material for evaluation during both years. All the fungicides reduced disease severity, incidence, and staghead formation compared to the control. The plots sprayed with metalaxyl 8% + mancozeb 64% recorded minimum disease severity (7.71% and 8.61%), incidence (25.56% and 26.70%), and staghead formation (9.61% and 8.33%) at 60 DAS, followed by mancozeb 75% WP, copper oxychloride 50% WP, and propiconazole 25% EC. The yield was also highest in plots sprayed with metalaxyl 8% + mancozeb 64% (30.03 and 30.16 q/ha), followed by mancozeb 75% WP (29.33 and 29.6 q/ha), copper oxychloride 50% WP (28.33 and 28.63 q/ha), and propiconazole 25% EC (26.03 and 26.1 q/ha). The least effective fungicide was propineb 70% WP compared to all other treatments. As the limited effectiveness of conventional methods like cultural and mechanical practices for disease control, which often fail to provide adequate protection under severe disease pressure. Hence the study demonstrated that fungicidal treatments, particularly metalaxyl 8% + mancozeb 64% WP, offered effective disease control and improved yields. This research provides valuable insights and practical recommendations for enhancing disease management strategies in mustard crop, helping farmers adopt more reliable and sustainable solutions.

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