Application Regime for Disease Control Using Thyme Oil
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.
Agaricus bisporus Thyme Oil Essential Oils Application Regime Pathogens Control
Thierry Regnier Sandra Combrinck Kimberly Paley David Beyer
Department of Chemistry, Tshwane University of Technology, Pretoria, South Africa Department of Plant Pathology, College of Agricultural Sciences, Pennsylvania State University, Unit
国际会议
The 18th Congress of the International Society for Mushroom Science(第十八届国际食用菌大会 ISMS18)
北京
英文
384-389
2012-08-27（万方平台首次上网日期，不代表论文的发表时间）