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<p>Grape cultivation in India has encountered multiple challenges, with diseases and pests being the key constraints. Several pathogens infect grape leaves, berries, and shoots, with anthracnose being a&#xa0;major disease that can cause considerable crop damage. The application of fungicides with different modes of action is an effective strategy for disease management. Hence, this study was conducted to evaluate different fungicides for effective disease management under both <i>in vitro</i> and field conditions. Four contact fungicides, <i>viz.</i>, Bordeaux mixture 0.8%, mancozeb 75% wettable powder (WP), chlorothalonil 75% WP, and copper sulphate 47.15% + mancozeb 30% water dispersible granules (WG) at different concentrations, i.e. 50, 100, 200, 500, 1000, and 1500 ppm, and three systemic fungicides, <i>viz.</i>, carbendazim 50% WP, difenoconazole 25% emulsifiable concentrate (EC), and azoxystrobin 8.3% + mancozeb 66.7% WG at concentrations of 1,&#xa0;5, 10, 25, 50, 100, and 200 ppm were evaluated under in vitro conditions using the poison food technique. Among the systemic fungicides, difenoconazole 25% EC was the most effective, inhibiting 91.48% of mycelial growth at a&#xa0;concentration of 200 ppm, followed by azoxystrobin 8.3% + mancozeb 66.7%, while amongst the contact fungicides, copper sulphate 47.15% + mancozeb 30% WG showed significant efficacy, suppressing 62.78% of mycelial growth at 1500 ppm. Under field conditions, seven different modules, each with distinct fungicide schedules were evaluated as foliar sprays against grape anthracnose. Maximum disease control, i.e. 76.07 and 78.29% was exhibited by module&#xa0;2 (Bordeaux mixture @ 0.8%, mancozeb @ 0.25%, difenoconazole 25% EC @ 0.1%, and copper sulphate 47.15% + mancozeb 30% WG @ 0.3%) during 2023 and 2024, respectively. This was followed by module&#xa0;5 (Bordeaux mixture @ 0.8%, chlorothalonil 75% WP @ 0.2%, difenoconazole 25% EC @ 0.1%, and copper sulphate 47.15% + mancozeb 30% WG @ 0.3%) with 70.69 and 72.61% disease control, respectively, during 2&#xa0;consecutive years. These results emphasize the importance of selecting the appropriate fungicide for effective management of grape anthracnose.</p>

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Comparative Efficacy of Different Fungicide Modules Against Grape Anthracnose

  • 期刊论文

  • 发表日期：

    2026年4月8日

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  • Harmeen Kaur,
  • Amrinder Kaur,
  • Anita Arora,
  • Gagandeep Kaur

摘要

Grape cultivation in India has encountered multiple challenges, with diseases and pests being the key constraints. Several pathogens infect grape leaves, berries, and shoots, with anthracnose being a major disease that can cause considerable crop damage. The application of fungicides with different modes of action is an effective strategy for disease management. Hence, this study was conducted to evaluate different fungicides for effective disease management under both in vitro and field conditions. Four contact fungicides, viz., Bordeaux mixture 0.8%, mancozeb 75% wettable powder (WP), chlorothalonil 75% WP, and copper sulphate 47.15% + mancozeb 30% water dispersible granules (WG) at different concentrations, i.e. 50, 100, 200, 500, 1000, and 1500 ppm, and three systemic fungicides, viz., carbendazim 50% WP, difenoconazole 25% emulsifiable concentrate (EC), and azoxystrobin 8.3% + mancozeb 66.7% WG at concentrations of 1, 5, 10, 25, 50, 100, and 200 ppm were evaluated under in vitro conditions using the poison food technique. Among the systemic fungicides, difenoconazole 25% EC was the most effective, inhibiting 91.48% of mycelial growth at a concentration of 200 ppm, followed by azoxystrobin 8.3% + mancozeb 66.7%, while amongst the contact fungicides, copper sulphate 47.15% + mancozeb 30% WG showed significant efficacy, suppressing 62.78% of mycelial growth at 1500 ppm. Under field conditions, seven different modules, each with distinct fungicide schedules were evaluated as foliar sprays against grape anthracnose. Maximum disease control, i.e. 76.07 and 78.29% was exhibited by module 2 (Bordeaux mixture @ 0.8%, mancozeb @ 0.25%, difenoconazole 25% EC @ 0.1%, and copper sulphate 47.15% + mancozeb 30% WG @ 0.3%) during 2023 and 2024, respectively. This was followed by module 5 (Bordeaux mixture @ 0.8%, chlorothalonil 75% WP @ 0.2%, difenoconazole 25% EC @ 0.1%, and copper sulphate 47.15% + mancozeb 30% WG @ 0.3%) with 70.69 and 72.61% disease control, respectively, during 2 consecutive years. These results emphasize the importance of selecting the appropriate fungicide for effective management of grape anthracnose.