Study on Environmental Behavior of Tebuconazole in Different Banana Planting Soils

Objective The study was carried out to explore the main environmental behavior of tebuconazole in different types of banana planting soils.

Method A GC-MS method was established for the detection of tebuconazole in soil. The degradation, adsorption and leaching behavior of tebuconazole in three typical types of banana planting soils, namely, Hainan latosol, Yunnan sandy soil and Fujian plain alluvial soil, were studied. And the digestion and migration of tebuconazole in different types of soils were evaluated.

Result The average recovery rate of tebuconazole was 81.20%-100.80%, the relative standard deviation was 2.81%-4.35% and the linear range was 0.0125-0.25 μg/mL. The degradation dynamic equation of tebuconazole in soil matched with the first-order kinetic equation, and its half-life period in three different soils were 21.07d, 19.92d and 24.76 d.

Conclusion Tebuconazole was degraded fastest in Yunnan sandy soil and slowest in Fujian plain alluvial soil. The Hainan latosol had the strongest adsorption capacity, and the Yunnan sandy soil had the worst adsorption capacity, both of which were easy to adsorb tebuconazole. Tebuconazole was difficult to leach in the three soils.