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<p>Seedling blight is an important disease among apple nursery diseases. A causal organism of the disease was isolated and its identity was confirmed as a <i>Sclerotium rolfsii</i> Sacc. To devise management, recent fungicides, commonly available botanicals, and nutrients were evaluated through the poisoned food technique. Among the fungicides, carboxin + thiram, pyraclostrobin + fluxapyroxad, and propiconazole showed 100% inhibition of fungal radial growth followed by fluopyram + tebuconazole (93.89%). In case of botanicals, the extracts from <i>Allium sativum</i> showed 100% inhibition at all the tested concentrations. Among seven nutrients tested through the poisoned food technique, only boron shows inhibition of 94.28% at 500 ppm concentration. Selected fungicides, botanical and nutrients were evaluated in the field for management of <i>S. rolfsii</i>. Among nine treatments, propiconazole @ 1 ml L<sup>-1</sup> showed maximum survival (65%) of apple seedlings followed by fluopyram + tebuconazole @ 0.625 ml L<sup>-1</sup> (43%). Garlic extract @ 5% resulted in 25% seedling survival, while boron @ 500 ppm showed the lowest efficacy with only 3% survival. The current study recommends the use of propiconazole @ 1 ml L<sup>-1</sup> and fluopyram + tebuconazole @ 0.625 ml L<sup>-1</sup> for the management of seedling blight disease.</p>

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Studies on the management of apple seedling blight (Sclerotium rolfsii Sacc.) through fungicides, botanicals, and nutrients

  • 期刊论文

  • 发表日期：

    2025年8月6日

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  • Santosh Watpade,
  • Hema Kumari,
  • Esha Devi,
  • Dinesh Kumar,
  • Rishav Kumar,
  • Jitender Kumar,
  • Priyank Hanuman Mhatre,
  • K.K. Pramanick,
  • Dharam Pal

摘要

Seedling blight is an important disease among apple nursery diseases. A causal organism of the disease was isolated and its identity was confirmed as a Sclerotium rolfsii Sacc. To devise management, recent fungicides, commonly available botanicals, and nutrients were evaluated through the poisoned food technique. Among the fungicides, carboxin + thiram, pyraclostrobin + fluxapyroxad, and propiconazole showed 100% inhibition of fungal radial growth followed by fluopyram + tebuconazole (93.89%). In case of botanicals, the extracts from Allium sativum showed 100% inhibition at all the tested concentrations. Among seven nutrients tested through the poisoned food technique, only boron shows inhibition of 94.28% at 500 ppm concentration. Selected fungicides, botanical and nutrients were evaluated in the field for management of S. rolfsii. Among nine treatments, propiconazole @ 1 ml L-1 showed maximum survival (65%) of apple seedlings followed by fluopyram + tebuconazole @ 0.625 ml L-1 (43%). Garlic extract @ 5% resulted in 25% seedling survival, while boron @ 500 ppm showed the lowest efficacy with only 3% survival. The current study recommends the use of propiconazole @ 1 ml L-1 and fluopyram + tebuconazole @ 0.625 ml L-1 for the management of seedling blight disease.