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<p>We analyzed conidial germination by <i>Pseudocercospora fuligena</i> and incidence of tomato black leaf mold (BLM) after production equipment and greenhouses were sprayed with benzothiazole solution (BTH) or fogged with tetrachloroisophthalonitrile (TPN). Meta-analysis of conidial germination showed a combined relative risk (RR) of 0.20 (95% CI: 0.14–0.27) after the BTH treatment and 0.06 (95% CI: 0.04–0.08) after TPN, indicating significant inhibition of germination. In 14 greenhouses across four fields in two experiments in 2014, the disease-free period was extended after the BTH spray by 11 and 32&#xa0;days, respectively, and after the TPN fog by 11 and 26.5&#xa0;days (Kaplan–Meier) compared with the periods in the untreated greenhouses. In experiments in 2014, 2015, and 2021, generalized linear mixed model (GLMM) analysis of disease incidence on tomato leaves late in cultivation revealed significant associations between either of the disinfestation treatments and BLM occurrence. Meta-analysis revealed an RR of 0.66 (95% CI: 0.63–0.70) in two experiments with BTH and RR of 0.80 (95% CI: 0.73–0.87) in four experiments with TPN. This study, the first to evaluate the impact of decontaminating production equipment on BLM incidence on tomato in greenhouses showed that primary infection was effectively eliminated and disease incidence tended to be slightly reduced.</p>

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Chemical decontamination of greenhouses to control tomato black leaf mold

  • 期刊论文

  • 发表日期：

    2025年2月12日

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  • Namiko Kirino,
  • Akira Kawaguchi

摘要

We analyzed conidial germination by Pseudocercospora fuligena and incidence of tomato black leaf mold (BLM) after production equipment and greenhouses were sprayed with benzothiazole solution (BTH) or fogged with tetrachloroisophthalonitrile (TPN). Meta-analysis of conidial germination showed a combined relative risk (RR) of 0.20 (95% CI: 0.14–0.27) after the BTH treatment and 0.06 (95% CI: 0.04–0.08) after TPN, indicating significant inhibition of germination. In 14 greenhouses across four fields in two experiments in 2014, the disease-free period was extended after the BTH spray by 11 and 32 days, respectively, and after the TPN fog by 11 and 26.5 days (Kaplan–Meier) compared with the periods in the untreated greenhouses. In experiments in 2014, 2015, and 2021, generalized linear mixed model (GLMM) analysis of disease incidence on tomato leaves late in cultivation revealed significant associations between either of the disinfestation treatments and BLM occurrence. Meta-analysis revealed an RR of 0.66 (95% CI: 0.63–0.70) in two experiments with BTH and RR of 0.80 (95% CI: 0.73–0.87) in four experiments with TPN. This study, the first to evaluate the impact of decontaminating production equipment on BLM incidence on tomato in greenhouses showed that primary infection was effectively eliminated and disease incidence tended to be slightly reduced.