Journal of Spectroscopy / 2018 / Article / Fig 4

Research Article

Utilization of Machine Vision to Monitor the Dynamic Responses of Rice Leaf Morphology and Colour to Nitrogen, Phosphorus, and Potassium Deficiencies

Figure 4

Leaf area responses of the first three fully expanded leaves to different nutrient supplies: (a, b, c) N treatment, (d, e, f) P treatment, (g, h, i) K treatment, and (j, k, l) four treatments (average value of the four nutrition levels in each treatment). The three columns from the left to right present colour variations in the 1st, 2nd, and 3rd fully expanded leaves, respectively. DAT: day after transplantation.