Table 4.

Influence of irrigation regimes and different exogenously applied substances on grain yield contributing traits of diverse rice genotypes over two summer seasons of 2021 and 2022.

Studied Factor		No of grains per panicle	Fertility (%)	1000 grain Weight (g)	Panicle weight (g)	Grain yield (ton/ha)
Irrigation
Well-watered		147.46 a	84.77 a	29.13 a	4.31 a	10.10 a
Drought stress		123.49 b	80.15 b	25.81 b	2.83 b	7.25 b
Foliar application
Untreated control		128.40 c	76.09 d	26.87 c	3.18 c	8.01 b
Nano-silicon		141.00 a	84.19 b	27.42 b	3.75 a	9.06 a
Potassium sulfate		132.78 b	82.03 c	27.50 b	3.58 b	8.44 b
Proline		139.72 a	86.08 a	28.10 a	3.78 a	9.20 a
Genotypes
IRRAT		132.58 b	82.56 b	36.15 a	4.66 a	7.92 b
G178		160.94 a	84.14 a	22.38 b	3.39 b	9.86 a
IR64		112.91 c	80.09 c	23.89 b	2.67 b	8.25 b
ANOVA	df	P value
Irrigation (IR)	1	0.018	<0.001	<0.001	<0.001	<0.001
Foliar application (FA)	3	<0.001	<0.001	<0.001	<0.001	<0.001
Genotype (G)	2	<0.001	<0.001	<0.001	<0.001	<0.001
Year (Y)	1	0.071	0.072	0.112	0.039	0.041
IR × F	3	<0.001	<0.001	<0.001	<0.001	<0.001
IR × G	2	<0.001	<0.001	<0.001	<0.001	<0.001
IR × Y	1	0.225	0.018	0.089	0.048	0.022
FA × G	6	<0.001	<0.001	<0.001	0.051	<0.001
FA × Y	3	0.083	0.061	0.087	0.064	0.073
G × Y	2	0.001	0.001	0.076	0.082	0.062
IR × FA × G	6	<0.001	<0.001	<0.001	<0.001	<0.001
IR × FA × G × Y	3	0.836	0.856	0.246	0.636	0.994