Fluazinam, a widely used pesticide in conventional potato cultivation, is effective against epidemics of the fungal disease late blight. To assess fluazinam persistence in soil, laboratory experiments were conducted with fluazinam added to soil as a pure chemical or contained in the commercial product Shirlan^®. In a follow-up experiment, the persistence was monitored under constant temperature and water content conditions during a maximum period of 1 year. In an annual climatic rotation experiment, fluazinam added to soil was exposed to the year-round temperature and water content conditions occurring in the boreal zone. A third experiment was undertaken to clarify the effect of soil organic matter (SOM) on the recovery of fluazinam. In the follow-up and annual climatic rotation experiments, more than half of the added fluazinam was recovered after 1 year of incubation. The estimated half-life of fluazinam ranged between 355 and 833 days. The degradation of fluazinam was enhanced by an abundance of SOM, a warm temperature, and wetness. Additionally, in over half of soil samples collected from fields where potato had been intensively cultivated for many years, varying concentrations of fluazinam were detected. Fluazinam can carry over to the next growing season in professional potato production.

Fluazinam是常规马铃薯栽培中广泛使用的农药，可有效对抗晚疫病真菌病。为了评估在土壤中氟啶胺的持久性，实验室实验是用加入到土壤作为纯化学品或包含在商业产品Shirlan氟啶胺进行^®。在后续实验中，在恒定的温度和含水量条件下，最长持续1年监控持久性。在一年一度的气候轮换实验中，向土壤中添加的氟喹嗪暴露于北方地区常年出现的温度和水分条件下。进行了第三个实验，以阐明土壤有机质（SOM）对氟西那南的回收的影响。在后续和年度气候轮换实验中，孵育1年后，回收了超过一半的添加的fluazinam。氟齐南的估计半衰期为355天至833天。丰富的SOM，温暖的温度和湿度增强了fluazinam的降解。另外，从多年集约种植马铃薯的田地中收集的一半以上土壤样品中，检测到不同浓度的氟济南。Fluazinam可以继续进行专业马铃薯生产的下一个生长季节。