Scholarlink

<p>The dieback disease caused by <i>Fusarium solani</i> poses a&#xa0;significant challenge to tea cultivation. <i>Trichoderma</i> has the potential to combat this disease effectively without any residual effects. Out of several <i>Trichoderma</i> isolates collected from Dooars region of the West Bengal, India, the most potent strain was assessed under field conditions for the management of dieback disease in the Darjeeling, Dooars, and Assam zones. <i>T.&#xa0;asperellum</i> sprays at 1000 and 1200 ml/ha concentrations were found to be effective in managing the disease at all locations during both seasons. In Darjeeling, the infected shoots were 7.9&#xa0;and 7.6&#xa0;at 1000 and 1200 concentrations, respectively, compared to 27.3 in the untreated control during season&#xa0;I. During season&#xa0;II, the number of infected shoots was 8.1&#xa0;and 7.3, respectively, compared to 29.9 in the control group. In Dooars such shoots were 8.6&#xa0;and 8.2 respectively, against 31.3 shoots in control during season‑I and during season&#xa0;II the infected shoots were observed as 7.8&#xa0;and 7.2&#xa0;respectively, as compared to 29.9 in control plot. A&#xa0;similar trend was observed in Assam during both seasons. There was an increase in tea yield in <i>T.&#xa0;asperellum-</i>sprayed plots at all locations. During season&#xa0;I in Darjeeling, the tea yields were 422 and 425 kg at both concentrations, respectively, compared to 377 Kg in the untreated control. They were 395 and 399 Kg, respectively, in season&#xa0;II, compared with 354 Kg in the untreated control. In Dooars 1694 and 1703, Kg tea yield was obtained with these concentrations, which was higher than the untreated control (1519 Kg) in the first season, and a&#xa0;similar pattern was noted during the second season in terms of yield. A&#xa0;similar yield enhancement was observed in Assam during both seasons. The formulation did not harm beneficial insects across all zones, and no phytotoxicity was observed on tea leaves. The findings of this study suggest that <i>T.&#xa0;asperellum</i> is a&#xa0;promising agent for reducing tea dieback disease. It has negligible phytotoxicity and increases production without harming beneficial insects.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Trichoderma Asperellum: a Promising Biocontrol Solution for Controlling Fusarium Dieback Disease in Tea (Camellia sp.) Plantations

  • 期刊论文

  • 发表日期：

    2026年1月20日

查看全文
  • Kishor Chand Kumhar,
  • Azariah Babu,
  • John Peter Arulmarianathan,
  • Bhabesh Deka,
  • Mitali Bordoloi,
  • Hirakjyoti Rajbongshi,
  • Pritam Dey

摘要

The dieback disease caused by Fusarium solani poses a significant challenge to tea cultivation. Trichoderma has the potential to combat this disease effectively without any residual effects. Out of several Trichoderma isolates collected from Dooars region of the West Bengal, India, the most potent strain was assessed under field conditions for the management of dieback disease in the Darjeeling, Dooars, and Assam zones. T. asperellum sprays at 1000 and 1200 ml/ha concentrations were found to be effective in managing the disease at all locations during both seasons. In Darjeeling, the infected shoots were 7.9 and 7.6 at 1000 and 1200 concentrations, respectively, compared to 27.3 in the untreated control during season I. During season II, the number of infected shoots was 8.1 and 7.3, respectively, compared to 29.9 in the control group. In Dooars such shoots were 8.6 and 8.2 respectively, against 31.3 shoots in control during season‑I and during season II the infected shoots were observed as 7.8 and 7.2 respectively, as compared to 29.9 in control plot. A similar trend was observed in Assam during both seasons. There was an increase in tea yield in T. asperellum-sprayed plots at all locations. During season I in Darjeeling, the tea yields were 422 and 425 kg at both concentrations, respectively, compared to 377 Kg in the untreated control. They were 395 and 399 Kg, respectively, in season II, compared with 354 Kg in the untreated control. In Dooars 1694 and 1703, Kg tea yield was obtained with these concentrations, which was higher than the untreated control (1519 Kg) in the first season, and a similar pattern was noted during the second season in terms of yield. A similar yield enhancement was observed in Assam during both seasons. The formulation did not harm beneficial insects across all zones, and no phytotoxicity was observed on tea leaves. The findings of this study suggest that T. asperellum is a promising agent for reducing tea dieback disease. It has negligible phytotoxicity and increases production without harming beneficial insects.