Evaluation of grain yield based on digital images of rice canopy

Table 6 Comparative analysis of the normalized blueness intensity (NBI) in rice canopy under nitrogen (N) fertilizer and density treatments

Treatments	TS	JS	HS	FS	LFS	MS
N0	0.191 ± 0.009 b	0.216 ± 0.005c	0.131 ± 0.005b	0.132 ± 0.003b	0.147 ± 0.001b	0.126 ± 0.001a
N1	0.204 ± 0.006 a	0.226 ± 0.004b	0.143 ± 0.012a	0.157 ± 0.001a	0.194 ± 0.016a	0.128 ± 0.005a
N2	0.209 ± 0.015 a	0.228 ± 0.004b	0.150 ± 0.004a	0.162 ± 0.008a	0.200 ± 0.008a	0.127 ± 0.003a
N3	0.188 ± 0.008b	0.235 ± 0.002a	0.149 ± 0.004a	0.161 ± 0.003a	0.204 ± 0.005a	0.133 ± 0.002a
D4	0.199 ± 0.014A	0.226 ± 0.005A	0.144 ± 0.010A	0.151 ± 0.014A	0.182 ± 0.022A	0.126 ± 0.005A
D3	0.207 ± 0.017A	0.223 ± 0.010A	0.145 ± 0.010A	0.153 ± 0.013A	0.188 ± 0.027A	0.128 ± 0.004A
D2	0.197 ± 0.008A	0.225 ± 0.009A	0.148 ± 0.006A	0.152 ± 0.016A	0.195 ± 0.031A	0.129 ± 0.003A
D1	0.200 ± 0.012A	0.230 ± 0.008A	0.141 ± 0.015A	0.156 ± 0.015A	0.188 ± 0.028A	0.125 ± 0.003A

TS, JS, HS, FS, LFS and MS indicate the tillering, jointing, heading, filling, late filling and maturity stages of rice, respectively. Different lowercase letters indicate significant differences among nitrogen (N) fertilizer treatments (p < 0.05); different uppercase letters indicate significant differences among planting density treatments (p < 0.05)

ISSN: 1746-4811