Preliminary Investigation on Crop Growth, Physiology, and Yield of Rice under Partial Root-Zone Irrigation

Table 4

Ratio of the shoot to root, shoot, and root dry of PMK (R) 3 rice by split root experiment.

Irrigation treatments	Shoot dry mass (g)	Root dry mass (g)	Shoot:root ratio
PRI1	70.3 ± 0.63^c	3.9 ± 0.03^ab	17.8 ± 0.21^bc
PRI2	74.7 ± 0.70^b	4.2 ± 0.10^a	18.0 ± 0.51^bc
PRI3	85.0 ± 0.75^a	4.1 ± 0.05^a	20.5 ± 0.29^b
PRI4	65.3 ± 0.59^de	3.2 ± 0.09^c	20.3 ± 0.60^bc
PRI5	63.7 ± 0.68^e	2.6 ± 0.15^d	24.9 ± 1.79^a
PRI6	55.4 ± 0.46^f	2.2 ± 0.13^e	25.6 ± 1.51^a
Control	66.1 ± 0.56^d	3.8 ± 0.11^b	17.5 ± 0.53^c
Mean	68.6	3.4	20.7
SE	0.168	0.117	1.23
CD (0.05)	0.353	0.246	2.59
CD (0.01)	0.484	0.337	3.54

Values indicate the mean of eight plants; ± indicates standard error of the mean; letters indicate significant differences among means according to Student’s t-test. CD represents the critical difference at 95% (0.05) and 99% (0.01) confidence limit.