Plant Growth-Promoting Rhizobacteria Improve Growth, Morph-Physiological Responses, Water Productivity, and Yield of Rice Plants Under Full and Deficit Drip Irrigation

Rice

Table 9 Effect of integrative deficit drip irrigation and plant growth promoting rhizobacteria on yield component, grain yield and straw yield of rice plants grown under saline soil for (SI) 2016/2017 and (SII) 2017/2018 seasons

Source of variation	Panicle length (cm)	Panicle weight (g)	≠ grains/panicle	1000 grain weight (g)
Season	NS	NS	NS	NS
(SI) 2017	14.58 ± 1.41a	1.69 ± 0.11a	64.60 ± 2.11a	18.78 ± 1.01a
(SII) 2018	14.72 ± 1.21a	1.73 ± 0.11a	63.39 ± 1.91a	18.80 ± 0.91a
Irrigation	**	**	**	**
FI	14.99 ± 1.12a	1.94 ± 0.11a	67.66 ± 1.45a	20.63 ± 1.89a
DI	13.87 ± 0.88b	1.48 ± 0.09b	60.33 ± 2.31b	16.95 ± 1.21b
PGPR	**	**	**	**
⁻PGPR	13.91 ± 0.74b	1.50 ± 0.13b	58.19 ± 1.63b	16.85 ± 0.66b
⁺PGPR	15.39 ± 1.06a	1.92 ± 0.22a	69.81 ± 1.92a	20.73 ± 1.12a
I × PGPR	**	**	**	**
I₁₀₀ × ⁻PGPR	14.20 ± 1.20b	1.77 ± 0.22b	60.20 ± 2.30c	19.00 ± 1.02b
I₈₀ × ⁻PGPR	13.62 ± 0.88c	1.23 ± 0.21c	56.18 ± 1.99c	14.70 ± 0.89c
I₁₀₀ × ⁺PGPR	15.79 ± 1.23a	2.11 ± 0.17a	75.13 ± 2.32a	22.25 ± 1.23a
I₈₀ × ⁺PGPR	14.11 ± 0.99b	1.73 ± 0.14b	64.49 ± 2.42b	19.20 ± 1.43b

*,**Respectively, differences at p ≤ 0.05 and p ≤ 0.01 probability level, ns indicates no significant difference. Means followed by the same letter in each column are not significantly different according to the LSD test (p < 0.05)