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<p>This study aimed to assess the efficacy of fluopyram (Lufuda) in controlling <i>Ditylenchus destructor</i> (rot nematode) in sandy soils of China and to evaluate its marginal return on investment. Field trials were conducted in Yulin City, Shaanxi Province, during 2023 and 2024. The study compared six nematicide treatments: T1 (Lufuda), T2 (Judiyou), T3 (Xuelongsu), T4 (Wood vinegar solution), T5 (Thiamethoxam + Abamectin), T6 (Nematode Buster + 60&#xa0;billion microbial agent), and an untreated control. The results indicated that T1 (Lufuda) achieved the best control effect against the potato rot nematode over the two-year trial, with relative control efficacies of 68.52% (2023) and 85.79% (2024), and nematode population reduction rates of 70.43% (2023) and 35.48% (2024), respectively. After two consecutive years of application, the control efficacy of T2 and T6 exceeded 50%, and their continuous use effectively reduced disease incidence. In contrast, the field efficacy of T4 and T5 was unstable, likely influenced by environmental conditions, while T3 exhibited relatively poor control efficacy. The combined treatments of Lufuda + nano-adjuvant (T1-2) and Judiyou + nano-adjuvant (T2-2) had higher yield and marginal return than the corresponding single treatments Lufuda (T1-1) and Judiyou (T2-1), indicating that the nano-adjuvant can effectively enhance the efficacy of Lufuda and Judiyou. Different nematicide treatments showed no significant regular impact on potato quality (vitamin C, protein, starch content). This research provides a practical basis for the sustainable management of the potato rot nematode in sandy soils of China.</p>

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Efficacy of Different Nematicides for Ditylenchus destructor Management in Potato in Sandy Land of China

  • 期刊论文

  • 发表日期：

    2026年6月20日

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  • Chunbo Qian,
  • Wen Wang,
  • Zhengjun Ren,
  • Qianqian Zhang,
  • Yiwei Yang,
  • Qing Chang,
  • Bailin Liu

摘要

This study aimed to assess the efficacy of fluopyram (Lufuda) in controlling Ditylenchus destructor (rot nematode) in sandy soils of China and to evaluate its marginal return on investment. Field trials were conducted in Yulin City, Shaanxi Province, during 2023 and 2024. The study compared six nematicide treatments: T1 (Lufuda), T2 (Judiyou), T3 (Xuelongsu), T4 (Wood vinegar solution), T5 (Thiamethoxam + Abamectin), T6 (Nematode Buster + 60 billion microbial agent), and an untreated control. The results indicated that T1 (Lufuda) achieved the best control effect against the potato rot nematode over the two-year trial, with relative control efficacies of 68.52% (2023) and 85.79% (2024), and nematode population reduction rates of 70.43% (2023) and 35.48% (2024), respectively. After two consecutive years of application, the control efficacy of T2 and T6 exceeded 50%, and their continuous use effectively reduced disease incidence. In contrast, the field efficacy of T4 and T5 was unstable, likely influenced by environmental conditions, while T3 exhibited relatively poor control efficacy. The combined treatments of Lufuda + nano-adjuvant (T1-2) and Judiyou + nano-adjuvant (T2-2) had higher yield and marginal return than the corresponding single treatments Lufuda (T1-1) and Judiyou (T2-1), indicating that the nano-adjuvant can effectively enhance the efficacy of Lufuda and Judiyou. Different nematicide treatments showed no significant regular impact on potato quality (vitamin C, protein, starch content). This research provides a practical basis for the sustainable management of the potato rot nematode in sandy soils of China.