Yield Stability of Cotton Varieties

— Written by Keith Edmisten | February 3, 2014 (Updated: Aug. 19, 2015, 11:05 a.m.)

One is tempted to want to look at the nearest cotton variety test and place a lot of emphasis on those results for variety selection for the coming year. What happened at a particular test is not the best predictor of what will do best next year. For example, if I want to predict what varieties will perform best in the coming year at Rocky Mount, I have found that the results averaged over all locations is a better predictor than the previous years results at Rocky Mount.

The yeild stability of a variety is how well adapted the variety is to a number of environments, all of which may be possible for the coming year. Some varieties will do well in a certain environment and then bomb in other environments. A variety with good yeild stability will perform well across most environments. The table below, compiled by Dr. Mike Jones of Clemson, list the percentage of times a variety ranked in the top 25%, top 50% and top 75% for yield of all varieties. The data is presented averaged over North Carolina, South Carolina and Georgia (in bold) and by each state.

Lint Yield Rankings of Selected Varieties in Southeast University Variety Trials (North Carolina, South Carolina and Georgia) - 1998 to 2013 (data compiled by Mike Jones, Clemson University)
	# of Trials	% of Trials Ranked in Top 25% in Yield				% of Trials Ranked in Top 50% in Yield				% of Trials Ranked in Top 75% in Yield
Variety		SE	NC	SC	GA	SE	NC	SC	GA	SE	NC	SC	GA
PX 444413WRF	8	88	-	-	88	100	-	-	100	100	-	-	100
PHY 499WRF	129	74	67	70	78	95	93	96	94	99	100	100	98
DPL 1028B2RF	65	65	60	54	79	88	87	81	96	98	100	96	100
MON 13R352B2R2	17	65	25	80	75	82	75	100	75	94	75	100	100
*DPL 555BR*¹	217	63	71	55	71	86	94	80	91	94	100	92	96
PX 444414WRF	22	59	25	60	75	91	75	90	100	95	100	90	100
PX 300310WRF	17	59	50	20	88	76	75	60	88	82	75	80	88
DPL 1137B2RF	99	58	56	60	57	84	72	89	85	98	100	100	96
DPL 1252B2RF	71	58	60	54	59	75	67	79	75	92	87	96	91
ST 4747GLB2	22	55	50	50	63	59	75	50	63	100	100	100	100
DPL 1050B2RF	69	54	50	56	53	83	67	80	91	94	92	92	97
PX 554010WRF	13	54	-	20	75	69	-	20	100	85	-	60	100
PX 553840WRF	17	53	100	40	38	71	100	80	50	76	100	80	63
DPL 0912B2RF	91	51	56	54	45	78	89	77	74	93	89	94	95
NG 1511B2RF	98	49	60	50	46	73	80	78	69	95	90	100	92
*DPL 444BR*¹	135	46	76	39	39	67	88	64	61	87	96	82	92
PHY 333WRF	29	45	43	36	63	72	43	79	88	90	86	86	100
DPL 0935B2RF	78	45	38	34	56	68	54	59	81	90	92	93	86
*ST 5599BR*¹	179	44	64	31	52	72	85	59	83	92	97	89	94
DPL 1034B2RF	85	42	20	40	53	74	67	80	73	92	93	93	90
MON 12R352B2R2	17	41	50	80	13	82	100	100	63	94	100	100	88
DG 2570B2RF	68	41	58	42	30	66	74	68	60	90	100	84	87
DPL 0924B2RF	66	39	25	50	40	71	75	80	63	95	100	95	93
DPL 1219B2RF	26	38	0	42	63	62	33	58	88	88	83	88	100
PHY 339WRF	38	37	29	47	31	71	71	73	69	100	100	100	100
DPL 0920B2RF	41	37	29	40	41	66	57	100	64	90	86	100	91
DPL 1048B2RF	66	36	25	33	46	76	67	73	79	95	92	97	96
PHY 575WRF	37	35	67	22	44	62	67	44	81	84	100	83	81
ST 5458B2RF	91	33	14	38	39	63	62	67	57	86	86	86	86
FM 1740 B2RF	86	33	25	25	42	58	50	59	61	79	69	84	79
CG 3787B2RF	28	32	0	-	38	82	25	-	92	93	75	-	96
ST 4427B2RF	65	32	50	16	36	64	83	52	61	92	96	90	92
DPL 1133B2RF	55	31	64	20	25	69	100	60	63	87	100	95	75
DPL 1032B2RF	29	31	60	13	31	66	100	50	63	97	100	100	94
ST 4554B2RF	88	31	39	31	25	64	83	52	61	92	96	90	92
DPL 1321B2RF	33	30	43	40	19	64	71	70	56	88	100	90	81
DPL 1454NRB2RF	7	29	-	-	29	71	-	-	71	86	-	-	86
DPL 0949B2RF	43	28	13	23	36	63	38	54	77	91	75	85	100
DPL 1311B2RF	25	28	29	30	25	60	43	60	75	80	43	90	100
AM 1550B2RF	123	28	39	23	27	59	75	49	58	83	89	83	80
PHY 375WRF	179	28	43	19	30	58	71	48	61	79	86	71	84
FM 1944GLB2	40	28	25	25	31	55	75	50	56	85	100	85	81
ST 6448GLB2	43	26	14	30	25	63	43	60	75	86	86	75	100
ST 4946GLB2	38	26	57	20	19	50	57	40	56	74	86	60	81
PHX 5409-3WRF	8	25	0	40	-	38	0	60	-	88	67	100	-
CG 3428B2RF	12	25	0	-	38	25	0	-	38	58	50	-	63
NG 5315B2RF	35	23	25	20	25	54	50	47	63	83	50	80	94
DPL 1359B2RF	26	23	33	25	13	42	50	50	25	73	83	75	63
PHY 367WRF	69	22	29	12	27	46	36	44	53	81	86	84	77
DPL 1044B2RF	9	22	25	20	-	44	75	20	-	67	100	40	-
ST 4288B2RF	66	21	18	28	17	48	55	56	40	83	91	92	73
PHY 485WRF	129	21	14	24	21	43	32	53	40	74	64	82	73
DG 2610B2RF	26	19	14	0	25	58	43	100	56	77	71	100	75
MON 12R224B2R2	17	18	25	20	13	65	75	40	75	76	100	40	88
PHY 417WRF	22	18	50	20	0	36	100	30	13	59	100	70	25
ST 5288B2RF	76	16	18	11	21	46	36	46	50	86	82	86	86
PHY 440W	69	16	20	30	13	38	80	50	31	67	100	80	61
PHY 565WRF	74	16	7	17	20	34	21	27	47	66	71	50	80
SSG CT LINWOOD	38	16	-	-	16	26	-	-	26	50	-	-	50
ST 4145LLB2	20	15	-	0	19	55	-	25	63	85	-	50	94
DG CT13125F	14	14	25	0	13	64	75	50	63	86	100	100	75
PHY 427WRF	22	14	50	10	0	36	75	30	25	82	100	70	88
PHX 5403-5WRF	7	14	0	25	-	14	0	25	-	71	67	75	-
FM 1845LLB2	24	13	-	0	21	33	-	30	36	75	-	70	79
PHX 4433-14WRF	9	11	33	0	-	56	67	50	-	89	100	83	-
AT LA122	18	11	-	0	13	39	-	0	44	78	-	0	88
DPL 1212B2RF	10	10	0	14	-	40	33	43	-	50	33	57	-
AT 7A21	20	10	-	0	13	35	-	0	44	60	-	0	75
DG CT12353	10	10	-	50	0	20	-	50	13	40	-	50	38
DG 2285B2RF	12	8	25	-	0	42	75	-	25	67	100	-	50
AT NITRO44B2RF	24	8	0	0	13	25	0	40	25	67	33	80	69
SSG AU222	14	7	0	0	13	29	0	0	50	71	25	50	100
SSG HQ210CT	36	6	0	0	8	25	0	13	33	50	25	38	58
PHY 599WRF	17	6	0	0	13	12	0	0	25	24	50	0	25
DG CT13414	4	0	0	-	-	25	25	-	-	75	75	-	-

¹High-yielding standard check variety for Southeast; not legally available for planting after the 2010 growing season (NOT ENTERED IN OVTs AFTER 2010).

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Written By

Keith Edmisten Professor of Crop Science & Extension Cotton Specialist

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