Effects of different mowing treatments on the incidence of dollar spot in creeping bentgrass
[Objective]To understand the influence of different mowing treatments on the incidence of creeping bentgrass dollar spot.[Method]We combined three different mowing frequencies (once a day,once in 2 days,once in 4 days) and three different mowing heights (1.0 cm,1.5 cm,and 2.0 cm) as treatments,Through pathogen infection test to explore the diameter of dollar spot foci and the physiological response of creeping bentgrass under different mowing combinations.[Result]With the increase of mowing frequency and mowing height,the diameter of dollar spot foci and the content of MDA gradually decreased. The activity of related antioxidant enzymes and soluble pro-tein gradually increased. The F1H3 group had the best disease control effect (0.43 cm diameter of spot foci) and the highest antioxidant enzyme activity.In contrast,the F3H1 group had the most severe disease condition (2.5 cm diam-eter of spot foci),and the related antioxidant enzyme activity and soluble protein content were lowest.[Conclusion]This experiment shows that appropriately increasing the mowing frequency and mowing height in the period of high humidity can alleviate the symptoms of coin spot disease to a certain extent.
万方数据
维普
