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Application Regime for Disease Control Using Thyme Oil

机译:百里香油用于疾病控制的应用领域

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Although global mushroom production has expanded rapidly since 1980, the industry remains reliant on a small number of fungicides for pathogen control. It is commonly acknowledged that the number of outbreaks is rising due to increasing pathogen resistance to frequently applied fungicides. It is critical to find eco-friendly fungicides, based on alternative molecular frameworks. Essential oils have been extensively investigated as alternative mycobiocides, particularly for the postharvest control of fruit pathogens. Reports indicate that thyme oil has excellent potential for commercial application. This study was aimed at establishing a suitable application regime for thyme oil in the commercial production of button mushrooms. A trial was conducted at Highveld Mushrooms farm (Johannesburg, South Africa) to optimize the application regime for thyme oil. Two concentrations of essential oil (400 and 600 μL/L) were tested by varying the number of applications throughout the growth cycle of the button mushroom. The effects of the treatments on the total yield obtained for the three consecutive breaks were recorded. Data analysis revealed that thyme oil at a concentration as high as 600 μL/L did not significantly reduce the total yield. Results indicated that four applications of the oil mixture did not negatively affect the yield or quality of the mushrooms produced. No deduction could be made concerning pathogen control by the thyme oil, since no outbreaks were reported on the farm. Previous trials using pathogen inoculated casing did confirm the antifungal activity of this oil against four important mushroom diseases. Further exploratory trials conducted on a farm prone to contamination by wet bubble and Trichoderma revealed that the use of the oil at 600 μL/L significantly restricted the occurrence of disease. As mushroom growers have shown interest in using thyme oil to supplement the range of fungicides, the registration of the oil should be promptly implemented.
机译:尽管自1980年以来全球蘑菇产量迅速增长,但该行业仍然依靠少量杀菌剂来控制病原体。众所周知,由于病原体对常用杀真菌剂的抵抗力增强,因此暴发数量正在增加。基于替代的分子框架,找到环保型杀菌剂至关重要。香精油已被广泛研究用作替代性杀菌剂,特别是用于水果病原体的收获后控制。报告表明,百里香油具有极好的商业应用潜力。这项研究的目的是建立纽扣蘑菇商业化生产中百里香油的合适应用体系。在Highveld Mushrooms农场(南非约翰内斯堡)进行了一项试验,以优化百里香油的施用方式。通过改变整个蘑菇生长周期的施用次数,测试了两种精油浓度(400和600μL/ L)。记录处理对三个连续中断获得的总产量的影响。数据分析表明,百里香油的浓度高达600μL/ L不会显着降低总产量。结果表明,该油混合物的四次施用不会对所产生的蘑菇的产量或质量产生负面影响。由于在农场上没有爆发疫病的报道,因此无法推断出百里香精油控制病原体的可能性。先前使用病原体接种肠衣的试验确实证实了该油对四种重要蘑菇病的抗真菌活性。在一个容易被湿气泡和木霉菌污染的农场进行的进一步探索性试验表明,以600μL/ L的油量使用显着限制了疾病的发生。由于蘑菇种植者已显示出使用百里香油来补充各种杀菌剂的兴趣,因此应立即进行油类注册。

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