Rapid Identification of Potassium Nutrition Stress in Rice Based on Machine Vision and Object-Oriented Segmentation

Table 6

Identification accuracy of different K levels at different growth stages.

Growth stage	K1 (%)	K2 (%)	K3 (%)	K4 (%)	K5 (%)
Productive tillering stage	100	100	100	80	70
Invalid tillering stage	100	100	100	90	80
Jointing stage	100	100	100	90	80
Booting stage	100	100	100	90	90