Texas Cooperative Extension -Small Plot Cotton Variety Evaluation

Williamson County
Result Demonstration Report

SMALL PLOT COTTON VARIETY EVALUATION

Cooperator:
Archie Abrameit

Dale A. Mott
EA-IPM

Ron Leps
Extension Agent-Agriculture

Robert Lemon
State Cotton Specialist

Thrall, Williamson County, Precinct #4

SUMMARY:
This cotton variety study was located on the Stiles Farm in Thrall, Texas where 28 cotton varieties were evaluated. The two top yielding varieties were FM 832 and SG 215 B/R with 658 and 652 lbs lint/ac, respectively. Deltapine had the 3rd and 4th top yielding varieties with their experimentals, DPLX 00s04 and DPLX 99M03 with yields of 633 and 631 lbs/ac, respectively.

OBJECTIVE:
This demonstration was conducted in order to evaluate 28 cotton varieties/treatments in respect to yield, and lint quality. Some of the varieties were experimental and may never make it to commercial release.

MATERIALS & METHODS:
This demonstration was planted on April 20 with a 4 row JD MaxEmerge Planter on 38" row spacing. Plots were 50 feet in length, 4 rows wide and replicated 3 times. The plot was harvested on September 25 with a 4 row cotton stripper and yields were taken by weighing all the seed cotton from each plot. All the cotton from each plot was sent to Delta and Pineland headquarters in Scott Mississippi where all the cotton was ginned and then graded. Each treatment had Temik® @ 4.5 lbs/ac. at plant unless otherwise noted.

RESULTS AND DISCUSSION:
There was some problems due to weed pressure in some plots that caused additional variability in the data. Yields ranged from 658 lbs/ac to 436 lbs/ac (Table 1). Three of the 7 FiberMax Varieties were in the top 6 in total yield. Two DeltaPine experimentals finished in the top 4 in yield. The lowest yielding variety, DPL 436 RR (no temik) did not have any at-plant soil insecticide and was adversely affected by early season thrips. In contrast, the treatment of DPL 436 RR (treated with Cruiser® ST and Temik®) came in 10th in total lint. Suregrow 215 B/R, a variety that many local growers are watching closely, was second in yield.

Table 1. Average Yield and Fiber Qualities of Cotton Treatments. Stiles Farm. 2001.

VARIETY Yield lbs/A Turnout % Grade Length 32nds Mic Strength g/tex Leaf Unif % Days to Cut-out

FM 832 658 30.04 51 34.75 3.63 26.07 3.0 81.2 81

SG215 B/R 652 32.93 52 30.90 4.33 22.93 1.7 79.7 78

DPLX 00S04 633 33.06 51 32.57 3.77 24.43 4.0 80.5 84

DPLX 99M03 631 31.96 54 31.63 3.93 23.67 1.7 79.2 79

FM 958 629 33.61 51 32.04 4.00 22.60 3.3 79.8 77

FM 966 628 33.03 54 32.14 4.17 23.33 3.0 80.8 78

SG 105 615 31.66 54 31.42 4.23 22.67 2.3 80.3 75

DPL 422 B/R 609 31.00 51 31.73 4.00 22.43 3.3 79.1 77

FM 832 BG 603 29.97 51 33.29 3.63 24.27 2.3 79.7 83

DPL 436 RR 590 31.30 51 32.25 4.43 23.73 3.7 80.2 80

PM 1218 B/R 582 35.53 51 31.63 4.57 22.17 2.7 80.4 78

FM 989 B/R 574 30.94 54 32.46 3.80 22.67 2.7 79.4 81

SG 521 RR 568 31.32 52 30.48 4.37 22.97 2.7 79.8 81

SG 747 557 33.28 52 31.84 4.30 23.90 2.0 79.5 76

FM 989 546 30.47 52 32.46 3.87 23.97 3.0 79.8 78

DPL 436 RR 541 31.04 52 31.42 4.20 21.50 2.3 79.0 79

FM 819 539 32.47 51 32.36 4.13 23.07 4.0 79.8 78

DPL 420 RR 527 32.04 52 31.00 4.13 21.53 2.7 79.3 83

DPLX 99X35 524 37.02 52 31.42 4.47 22.80 2.7 79.8 80

Delta Pearl 517 34.27 54 32.67 4.23 22.00 3.3 78.8 81

STV 4892/ B/R 506 33.91 52 31.00 4.40 21.77 1.7 79.2 83

FM 989 RR 492 31.83 52 31.83 3.73 23.93 2.0 79.7 81

DPL 491 490 33.71 52 32.77 3.93 21.90 1.7 79.3 83

DPL 451 B/R 489 31.30 51 31.94 4.27 21.77 3.0 80.0 74

DPL 436 RR (Adage treated seed) 486 30.54 54 31.94 4.57 22.73 3.3 80.1 79

PM 1199 RR 476 31.88 52 32.67 4.40 23.17 2.0 80.7 81

STV 4793 RR 466 34.22 54 29.65 4.77 21.03 2.0 78.1 83

DPL 436 RR (No Temik) 436 34.81 54 31.84 4.63 23.10 2.3 80.4 79

Mean 55.9 32.47 52.25 31.93 4.17 22.93 2.66 79.7 79.64

LSD (P=0.10) 98 2.15 4.0 0.807 0.215 1.39 1.17 1.39

CV 12.96 4.85 6.25 1.85 3.78 4.44 32.26 1.28

ACKNOWLEDGMENTS:
Appreciation is expressed to Archie Abrameit at the Stiles Farm for his cooperation in putting in this trial. Also, appreciation is expressed to Delta Pine for their support in planting of this trial and in ginning all the samples. Also, thanks is also expressed to Dr. Robert Lemon, Mr. Joel Pigg, T.J. Helton and Shane Melcher for their work on this study.

VARIETY	Yield lbs/A	Turnout %	Grade	Length 32nds	Mic	Strength g/tex	Leaf	Unif %	Days to Cut-out
FM 832	658	30.04	51	34.75	3.63	26.07	3.0	81.2	81
SG215 B/R	652	32.93	52	30.90	4.33	22.93	1.7	79.7	78
DPLX 00S04	633	33.06	51	32.57	3.77	24.43	4.0	80.5	84
DPLX 99M03	631	31.96	54	31.63	3.93	23.67	1.7	79.2	79
FM 958	629	33.61	51	32.04	4.00	22.60	3.3	79.8	77
FM 966	628	33.03	54	32.14	4.17	23.33	3.0	80.8	78
SG 105	615	31.66	54	31.42	4.23	22.67	2.3	80.3	75
DPL 422 B/R	609	31.00	51	31.73	4.00	22.43	3.3	79.1	77
FM 832 BG	603	29.97	51	33.29	3.63	24.27	2.3	79.7	83
DPL 436 RR	590	31.30	51	32.25	4.43	23.73	3.7	80.2	80
PM 1218 B/R	582	35.53	51	31.63	4.57	22.17	2.7	80.4	78
FM 989 B/R	574	30.94	54	32.46	3.80	22.67	2.7	79.4	81
SG 521 RR	568	31.32	52	30.48	4.37	22.97	2.7	79.8	81
SG 747	557	33.28	52	31.84	4.30	23.90	2.0	79.5	76
FM 989	546	30.47	52	32.46	3.87	23.97	3.0	79.8	78
DPL 436 RR	541	31.04	52	31.42	4.20	21.50	2.3	79.0	79
FM 819	539	32.47	51	32.36	4.13	23.07	4.0	79.8	78
DPL 420 RR	527	32.04	52	31.00	4.13	21.53	2.7	79.3	83
DPLX 99X35	524	37.02	52	31.42	4.47	22.80	2.7	79.8	80
Delta Pearl	517	34.27	54	32.67	4.23	22.00	3.3	78.8	81
STV 4892/ B/R	506	33.91	52	31.00	4.40	21.77	1.7	79.2	83
FM 989 RR	492	31.83	52	31.83	3.73	23.93	2.0	79.7	81
DPL 491	490	33.71	52	32.77	3.93	21.90	1.7	79.3	83
DPL 451 B/R	489	31.30	51	31.94	4.27	21.77	3.0	80.0	74
DPL 436 RR (Adage treated seed)	486	30.54	54	31.94	4.57	22.73	3.3	80.1	79
PM 1199 RR	476	31.88	52	32.67	4.40	23.17	2.0	80.7	81
STV 4793 RR	466	34.22	54	29.65	4.77	21.03	2.0	78.1	83
DPL 436 RR (No Temik)	436	34.81	54	31.84	4.63	23.10	2.3	80.4	79
Mean	55.9	32.47	52.25	31.93	4.17	22.93	2.66	79.7	79.64
LSD (P=0.10)	98	2.15	4.0	0.807	0.215	1.39	1.17	1.39
CV	12.96	4.85	6.25	1.85	3.78	4.44	32.26	1.28