Evaluation of grain yield based on digital images of rice canopy

Table 4 Comparative analysis of the normalized redness intensity (NRI) in rice canopy under nitrogen (N) fertilizer and density treatments

Treatments	TS	JS	HS	FS	LFS	MS
N0	0.317 ± 0.006a	0.309 ± 0.002a	0.355 ± 0.003a	0.371 ± 0.001a	0.381 ± 0.002a	0.460 ± 0.002a
N1	0.310 ± 0.004a	0.294 ± 0.001b	0.343 ± 0.004b	0.349 ± 0.001b	0.347 ± 0.008b	0.456 ± 0.006a
N2	0.314 ± 0.003a	0.292 ± 0.000b	0.342 ± 0.004b	0.348 ± 0.003b	0.346 ± 0.005b	0.459 ± 0.003a
N3	0.314 ± 0.008a	0.290 ± 0.001b	0.343 ± 0.003b	0.346 ± 0.002b	0.344 ± 0.003b	0.452 ± 0.002a
D4	0.322 ± 0.005A	0.297 ± 0.008A	0.347 ± 0.006A	0.353 ± 0.011A	0.356 ± 0.014A	0.456 ± 0.006A
D3	0.312 ± 0.003A	0.297 ± 0.010A	0.345 ± 0.007A	0.355 ± 0.012A	0.353 ± 0.017A	0.454 ± 0.004A
D2	0.308 ± 0.005A	0.296 ± 0.008A	0.340 ± 0.007A	0.352 ± 0.012A	0.349 ± 0.020A	0.454 ± 0.004A
D1	0.316 ± 0.006A	0.296 ± 0.008A	0.345 ± 0.007A	0.352 ± 0.013A	0.354 ± 0.020A	0.459 ± 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