Detection of powdery mildew in two winter wheat cultivars using canopy hyperspectral reflectance

► Reflectance decreased significantly in NIR regions as disease became more severe. ► drred, Σdr680-760 nm, DVI and SAVI were significantly correlated with disease. ► The most sensitive parameter for powdery mildew detection was Σdr680-760 nm. ► The models for powdery mildew detection based on Σdr680-760 nm were constructed.