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ew on hemp currently appears most severe in protected cultivation, rapid expansion of hemp cultivation and introduction of new CBD varieties throughout Oregon could lead to increased powdery mildew risk in outdoor cultivation.Rice false smut, caused by Ustilaginoidea virens, is a severe emerging disease in China. It affects not only the quality of rice, but also yields of rice production. In order to make clear the effect of chemical seed treatment on the rice false smut control in fields, during 2014 to 2017, four fungicides with diff