ABSTRACT

In 2019, we conducted a field experiment to test the effects of three different granular fertilizers on the salicylic acid and total phenolic contents in five different sport turfgrass mixtures under natural conditions. It was one of the first experiments assessing the natural resistance of sport turfgrass in Europe. In five terms, before and after fertilizers applications, we randomly collected turfgrass samples within each plot for chemical analyses. The turfgrass mixtures did not affect the average contents of salicylic acid and total polyphenols. The average contents of both compounds were influenced by the date of evaluation and fertilization scheme. The average content of salicylic acid was significantly the lowest under fertilization scheme C. The highest level of salicylic acid was detected on 18th June under scheme A and the lowest on 28th May, where the salicylic acid content ranged from 0.01 ± 0.00 mg.g⁻¹ under scheme A to 0.017 ± 0.00 mg.g⁻¹ under scheme B and 0.006±0.00 mg.g⁻¹ under scheme C. The content of total polyphenols was higher under fertilization schemes B and C. We conclude that the method of fertilization exerts a certain effect on the salicylic acid and total polyphenol contents in turfgrass mixtures, which also depends on environmental factors.

摘要

2019年，我们进行了田间试验，测试了三种不同颗粒肥料在自然条件下对五种不同运动型草坪草混合物中水杨酸和总酚含量的影响。这是欧洲首批评估运动型草坪草天然抗性的实验之一。在五个方面，在施肥之前和之后，我们在每个地块内随机收集草坪草样品进行化学分析。草坪草混合物不影响水杨酸和总多酚的平均含量。两种化合物的平均含量受评估日期和施肥方案的影响。施肥方案C下水杨酸的平均含量显着最低。^{方案 A 下的-1}至方案 B 下的 0.017 ± 0.00 mg.g ^-1和方案 C 下的0.006±0.00 mg.g ^-1。施肥方案 B 和 C 下总多酚的含量较高。我们得出结论：施肥对草坪草混合物中的水杨酸和总多酚含量有一定的影响，这也取决于环境因素。