CEBAS-CSIC, Campus Universitario de Espinardo, CP 30100 PO Box 164, Murcia, Spain.
Métodos Servicios Agrícolas, Calle Venta de la Aurora Partido el Reguero, 17 Abaran 30550, Murcia, Spain.
Ecotoxicol Environ Saf. 2018 Dec 30;166:78-85. doi: 10.1016/j.ecoenv.2018.09.074. Epub 2018 Sep 21.
The application of foliar fungicides to horticultural crops has raised public concerns worldwide. In fact, it has been demonstrated that such fungicides have an impact on non-target microorganisms in the rhizosphere. Fluopyram, triadimenol and penthiopyrad are three broad-spectrum fungicides recommended to control foliar diseases. In our experiment, these fungicides were applied to a cucumber crop to mainly control downy mildew caused by Pseudoperonospora cubensis and grey mold caused by Botrytis cinerea. At the same time, we found that these treatments also controlled other fungal pathogens affecting cucumber crops, particularly penthiopyrad, which was more effective. Once the fungicide application period was over, the effect decreased, although fungicide traces remained in the soil. Furthermore, microbial soil community analysis indicated that both fungicide treatments affect fungal communities to a greater extent than bacterial communities.
叶面杀菌剂在园艺作物上的应用引起了全球公众的关注。事实上，已经证明这些杀菌剂会对根际中的非靶标微生物产生影响。氟吡菌胺、三唑醇和戊唑醇是三种被推荐用于防治叶部病害的广谱杀菌剂。在我们的实验中，这些杀菌剂被应用于黄瓜作物上，主要用于防治由古巴假霜霉菌引起的霜霉病和由灰葡萄孢引起的灰霉病。同时，我们发现这些处理方法也控制了其他影响黄瓜作物的真菌病原体，特别是戊唑醇，效果更为显著。一旦杀菌剂的施用期结束，效果就会下降，尽管土壤中仍残留有杀菌剂的痕迹。此外，微生物土壤群落分析表明，两种杀菌剂处理都在更大程度上影响了真菌群落，而不是细菌群落。
