Monitoring the Nitrogen Nutrition Index Using Leaf-Based Hyperspectral Reflectance in Cut Chrysanthemums. - Yin Wu; Jingshan Lu; Huahao Liu; Tingyu Gou; Fadi Chen; Weimin Fang; Sumei Chen; Shuang Zhao; Jiafu Jiang; Zhiyong Guan (Remote. Sens., 2024)