. 2022 Aug 26;11(17):2219. doi: 10.3390/plants11172219

Table 5.

Effects of spraying ethephon on grain yield and yield components of summer maize.

Year	Treatment	Ears (No. ha⁻¹)	Kernels per Ear	1000-Grain Weight (g)	Grain Yield (kg ha⁻¹)
2020	LCK	50,556 ^d	598 ^a	315.4 ^a	9535.3 ^d
	MCK	60,556 ^c	545 ^c	306.1 ^b	10,102.2 ^cd
	ME	66,667 ^b	554 ^b	291.1 ^c	10,751.3 ^b
	HCK	69,444 ^b	526 ^e	291.8 ^c	10,658.7 ^bc
	HE	75,556 ^a	538 ^d	289.1 ^c	11,751.7 ^a
2021	LCK	56,667 ^e	601 ^a	253.5 ^a	8633.4 ^c
	MCK	70,741 ^d	572 ^b	245.9 ^b	9950.1 ^b
	ME	73,704 ^c	573 ^b	237.2 ^c	10,017.5 ^ab
	HCK	77,593 ^b	546 ^c	234.8 ^d	9947.5 ^b
	HE	88,148 ^a	528 ^c	226.1 ^e	10,523.2 ^a
ANOVA
Year (Y)		**	**	**	**
Density (D)		**	**	**	**
Ethephon (E)		**	ns	**	**
Y × D		ns	**	*	ns
Y × E		ns	*	ns	*
D × E		*	ns	**	ns
Y × D × E		*	ns	**	ns

LCK, MCK, ME, HCK and HE were the treatments of low density control, medium density control, medium density sprayed with ethephon, high density control and high density sprayed with ethephon, respectively. Different lowercase letters in the table indicated significant difference at 5% level. ns, no significance. *, significant at 0.05 probability level. **, significant at 0.01 probability level.