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<p>The aim of this research was to evaluate the efficiency of biofumigants and native biocontrol agents in controlling garlic white rot, caused by <i>Sclerotium cepivorum</i>. In vitro tests demonstrated that <i>Trichoderma</i> sp. strain 1 was the most effective native bio-control agent, inhibiting mycelial growth by 95.83%. This was closely followed by <i>Trichoderma</i> sp. strain 2 and <i>T. virens</i>, with inhibition rates of 94.80% and 91.57%, respectively. In pot culture experiments, <i>T. virens</i> and <i>Trichoderma</i> sp. strain 1 achieved the highest disease control rates at 63.17% and 61.13%, respectively, though these were surpassed by the chemical fungicide tebuconazole 25 EC at 0.2%, which achieved a 75.65% control rate. Among the six cruciferous crop residues tested, mustard and cabbage fresh residues at 10&#xa0;g were the most effective in vitro, inhibiting mycelial growth by 95.13% and 94.83%, respectively. In pot culture, cauliflower and cabbage residues applied at 10% w/w resulted in disease incidences of 51.31% and 52.61%, respectively, compared to 83.87% in the untreated control. In the biointensive disease management approach, combining <i>Trichoderma</i> strain 1 with crucifer residues was the most effective, reducing disease incidence to 37.17%, in contrast to 91.97% in the control. However, the lowest disease incidence was observed with the application of tebuconazole 25 EC at 0.2%, which resulted in a disease incidence of 27.77%.</p>

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Combating garlic white rot: evaluating the potency of biofumigants and indigenous Trichoderma strains against Sclerotium cepivorum

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • Shavnam,
  • Narender Kumar Bharat,
  • Meenu Gupta,
  • Ruchi Sharma,
  • Sonali Parwan

摘要

The aim of this research was to evaluate the efficiency of biofumigants and native biocontrol agents in controlling garlic white rot, caused by Sclerotium cepivorum. In vitro tests demonstrated that Trichoderma sp. strain 1 was the most effective native bio-control agent, inhibiting mycelial growth by 95.83%. This was closely followed by Trichoderma sp. strain 2 and T. virens, with inhibition rates of 94.80% and 91.57%, respectively. In pot culture experiments, T. virens and Trichoderma sp. strain 1 achieved the highest disease control rates at 63.17% and 61.13%, respectively, though these were surpassed by the chemical fungicide tebuconazole 25 EC at 0.2%, which achieved a 75.65% control rate. Among the six cruciferous crop residues tested, mustard and cabbage fresh residues at 10 g were the most effective in vitro, inhibiting mycelial growth by 95.13% and 94.83%, respectively. In pot culture, cauliflower and cabbage residues applied at 10% w/w resulted in disease incidences of 51.31% and 52.61%, respectively, compared to 83.87% in the untreated control. In the biointensive disease management approach, combining Trichoderma strain 1 with crucifer residues was the most effective, reducing disease incidence to 37.17%, in contrast to 91.97% in the control. However, the lowest disease incidence was observed with the application of tebuconazole 25 EC at 0.2%, which resulted in a disease incidence of 27.77%.