Table 2 Plant height (PH), number of plants (NP), flowering time (FLOWR), and leaf-stem ratio (LSR) in forage sorghum genotypes (Sorghum bicolor L.) harvested in seasons 1 (2021/2022) and 2 (2022/2023). Means followed by the same lowercase letter within rows or uppercase letter within columns, for the same variable, do not differ by the Scott-Knott test at a 5% probability of error (P < 0.05). G = genotype effect. H = harvest season effect. G × H = genotype × harvest season interaction (represents the genotype-environment interaction). SEM = standard error of the mean. Letters in the row and columns related to the ‘Mean’ cell compare isolated harvest season and genotype effects, respectively. Legend of genotypes’ nomenclature: 1 = 202110F005. 2 = 202110F006. 3 = 202110F007. 4 = 202110F008. 5 = 202110F010. 6 = 202110F011. 7 = 202110F012. 8 = 202110F013. 9 = 202110F016. 10 = CMSXS6000. 11 = CMSXS6001. 12 = CMSXS6003. 13 = 202110F020. 14 = CMSXS6002. 15 = BRS655. 16 = BRS658. 17 = AGRI001E. 18 = Volumax.

Genotype	PH (m)		Mean	NP (n/plot)		Mean	FLOWR (days)		Mean	LSR		Mean
	Harvest season			Harvest season			Harvest season			Harvest season		Mean
	1	2		1	2		1	2		1	2
1	3.67	3.57	3.62 A	77 bA	102 aF	89	73 aE	73 aB	73	0.31	0.30	0.31 C
2	3.53	3.40	3.47 A	83 bA	97 aH	90	68 aI	68 aD	68	0.30	0.28	0.29 C
3	3.45	3.35	3.40 A	72 bA	94 aI	83	73 bE	75 aB	74	0.18	0.23	0.20 C
4	3.53	3.43	3.48 A	69 bA	107 aE	88	74 aD	74 aB	74	0.29	0.28	0.29 C
5	3.43	3.47	3.45 A	76 bA	102 aF	89	75 aC	75 aB	75	0.29	0.28	0.29 C
6	3.52	3.60	3.56 A	74 bA	91 aJ	82	76 bB	78 aA	77	0.22	0.21	0.22 C
7	3.40	3.27	3.33 A	82 bA	116 aC	99	75 aC	73 bB	74	0.25	0.27	0.26 C
8	3.65	3.55	3.60 A	86 bA	120 aB	103	75 aC	73 bB	74	0.23	0.24	0.24 C
9	3.60	3.60	3.60 A	75 bA	109 aD	92	76 aB	74 bB	75	0.32	0.28	0.30 C
10	3.60	3.43	3.52 A	72 bA	102 aF	87	75 aC	73 bB	74	0.26	0.26	0.26 C
11	3.45	3.38	3.42 A	84 bA	110 aD	98	71 aG	69 bD	70	0.29	0.27	0.27 C
12	3.47	3.38	3.42 A	61 bA	103 aF	82	73 aE	73 aB	73	0.35	0.32	0.34 C
13	3.47	3.38	3.42 A	76 aA	89 aJ	83	72 aF	70 bC	71	0.18	0.20	0.19 C
14	3.50	3.43	3.47 A	68 bA	100 aG	84	79 aA	77 bA	78	0.26	0.28	0.27 C
15	2.35	2.22	2.28 C	58 bA	94 aI	76	65 aJ	62 bF	64	0.50	0.47	0.49 A
16	2.75	2.70	2.72 B	76 bA	123 aA	99	67 aJ	65 bE	66	0.48	0.47	0.48 A
17	2.57	2.47	2.52 B	71 bA	100 aF	86	70 aH	68 bD	69	0.51	0.50	0.50 A
18	2.62	2.68	2.65 B	76 bA	91 aJ	83	70 aH	70 aC	70	0.36	0.38	0.37 B
Mean	3.31 a	3.24 b		74	103		72	72		0.31	0.31
P-value
G	< 0.001			0.001			< 0.001			< 0.001
H	0.010			< 0.001			0.001			0.854
G × H	0.965			0.026			< 0.001			0.846
SEM	0.067			3.87			0.13			0.03

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