ALABAMA VARIETY REPORT 1978 DEPARTMENT OF AGRONOMY & SOILS AGRICULTURAL EXPERIMENT STATION R. DENNIS ROUSE, DIRECTOR DEPARTMENTAL SERIES NO. 48 AUBURN UNIVERSITY FEBRUARY 1979 AUBURN, ALABAMA 1978 ALABAMA COTTON VARIETY REPORT I A Report of the Performance of Cotton Varieties Tested at Nine Locations in Alabama During 1978 2/ Wiley C. Johnso- 2 / The Alabama Cotton Variety Test is a continuing evaluation of available cotton varieties from private companies and state experiment stations. Breeding lines that are likely to be released as varieties are also tested. Tests are conducted on units of the Agricultural Experiment Station by Experiment Station personnel. Cultural practices are as generally recommended by Auburn University to farmers. Every effort is made to test the varieties and present the data in an unbiased manner. Experimental Design and Plot Size A randomized block design in four replications was used at each loca- tion. Length of plots at different locations varied from 34 to 110 feet. Plots were two-row at Prattville and Belle Mina and single row at the other locations. Seasonal Conditions All tests were planted within the optimum planting period. Most varieties had acceptable stands but several rows were not harvested for record or yields were adjusted to account for skips. The greatest adjustment because of poor stand was at Prattville. The coefficient of variation for this test was reasonably low which would support the validity of the yield adjustments. Insect control was generally adequate. However, at Headland the top -February 1979 -/Professor, Department of Agronomy and Soils bolls were almost completely destroyed by bollworms. Rainfall on the E. V. Smith Research Center near Shorter was sparse all season. Most other locations had normal rainfall through July but less than normal rainfall thereafter. Moisture at Brewton and Crossville was adequate throughout the season. Explanation of Data Harvest of Seed Cotton: Tests at Prattville, Brewton, Monroeville, Shorter, and Tallassee were harvested by a mechanical spindle picker. Tests at Winfield, Belle Mina, Headland, and Crossville were harvested by hand. Average weight of seed cotton per acre was determined for each variety at each location. Lint Percentage: A sample of seed cotton from each variety at each location was taken at harvest and ginned on a 10-saw gin. Lint percentage was calcu- lated by dividing weight of lint by weight of seed cotton. Yield of Lint; Lint yield was determined by multiplying the lint percentage by yield of seed cotton. Fiber Properties: Because of the time required for the detailed determina- tions of the fiber properties, data presented in the current report are from samples of the previous year. Fiber qualities were determined by the USDA Cotton Quality Spinning Laboratory, Knoxville, Tennessee. (a) Span length: This is the fiber length measured on the digital fibrograph. The figure given is the distance spanned by 2.5% of the fibers, where the initial point of scanning is 100%. This length, in inches, approximates classer's staple. (b) Stelometer: T1 is a measure of breaking strength of a standard fiber bundle with the holding jaws separated by 1/8 inch. This is a metric measurement similar to Pressley strength except the figures are in centinewtons per tex. A centinewton is a measure of force and a tex is a size measurement of the fibers. The larger the T 1 , the stronger the fibers. E measures the percentage stretch before the fibers break. (c) Micronaire: This measures the fineness and maturity of the cotton fibers. The smaller the micronaire reading, the finer and/or more immature the fibers. The desirable range of micronaire is 3.5 - 4.9. Earliness: Where more than one harvest was made, earliness is reported as the percentage of the total yield harvested at the first picking. Fusarium Wilt: Reaction of varieties to Fusarium wilt was evaluated at the Plant Breeding Unit,. Tallassee, by growing the varieties in fields with a high natural incidence of the fusarium wilt-root-knot nematode complex. Severity of the disease varies from year to year and also within the experimental area in the same year. Therefore, several years' data are necessary to realistically characterize a variety's wilt reaction. Stoneville 213, Hancock, Stoneville 731N, Vail 7, and Brycot 4 have con- sistently shown a high incidence of wilt. All other varieties that have been tested for at least 3 years have acceptable tolerance to fusarium wilt. New and Experimental Varieties Several experimental varieties were tested in 1978. These are: Coker 4601, Coker 315, Coker 6118, Coker 3114, Coker 420, and Deltapine 7141. None of these have been released for planting in 1979. It is the policy of the Auburn University Agricultural Experiment Station to evaluate a limited 4 number of such experimental varieties as a service to plant breeders and also to enable the testing of potential varieties prior to their release. Paymaster 303 and Acala SJ-5 are varieties adapted to the western areas of cotton production and are included in certain Alabama variety tests as national standard varieties. These tests are part of a national cooperative variety: testing program. Neither variety is adapted to Alabama conditions. Rex 731 has been tested previously as "New Rex". The variety is the same; only the name has been changed. DES 56 was developed by the Mississippi Agricultural Experiment Station and is being tested in Alabama for the first time in 1978. Stoneville 825 is a nectariless variety similar to Stoneville 731N. McNair 235 has been previously tested at certain locations as McNair 3035. This is the first year it has been entered in the regular variety tests. Statistical Analysis Appropriate analyses of the yield data were made. For each location, the variability of the test was calculated and expressed as a percentage of the test mean, coefficient of variation (C,V.). An indication of the difference between variety averages necessary to be a real difference is given, Least Significant Difference (L.S,D. 05) Table 1. Performance of Cotton Varieties in Northern Alabama, 1978 Yield of lint per acre Av. lint Variety Crossville Belle Mina Winfield Av. percentage Lb, Lb, Lb, Lb, pct, Hancock 1144 .646 312 701 40 fcNAjx 235 1154 701 240 698 39 Coker 4601 1125 673 249 682 39 Rex 731 1006 616 412 678 37 Coker 315 1063 659 311 678 39 Stoneylle 213 1009 679 329 672 39 Dixie King 11ir, 1031 694 .238 654 38 Coker 3114 1060 616 251 643 41 Bryc t 4 977 640 305' 641 38 Stoneville 603 962 713 242 639 39 Deltapine 55 952 667 261 626 40 Coker 304 1104 581 181 622 40 Vail 7 983 648 210 614 38 Deltapine 26 954 570 308 611 41 Coker 310 1080 494 209 594.37 McNair 220 9261 571 270 589 38 Deltapine 7141 871 k 636 216 574 39 Deltapine 61 964 549 208 574 38 Delcot 277 845 608. 239 564 377 Coker 420 1039 437 194 557 38 8 DES 56 1137 311 40 7 DES 24 1123 253 40 7 Stoneville 825 1085 196 40 7 Auburn 56 715 68 38 4 Coker 6118 620 150 38 Stoneile 731N 1051 40 7 S. C,.41 952 40 7 Paymaster 303 949 39 7 Acala SJ'-5 935 .39 6 Deltapine 703 710 40 C.V, % 10,4 15,8 32,7 L. .05 148 139 N.S. rss aNina ?ct. 68 81 75 59 68 67 64 75 57 73 58 65 57 48 73 66 60 66 64 60 82 72 Table 2. Performance of Cotton Varieties in Northern Alabama, Two'-Year Average, 1977-78 Yield of lint per acre Av. lint Percent Variety' Crossville Belle Nina Winfield Av.. percentage earliness* Lb. Lb.. Lb. Lb. Pct. Pct. Hancock 763 588 488 613 39 80 Rex 731 713 659 421 597 38 75 Stonevilie 213 666 681 400 582 38 78 Coker 315 751 586 397 578 39 79 Stoneville 603 653 700 371 575 39 83 Coker 3114 711 613 385 570 41 82 Deltapine 26 626 652. 389 556 41 67 Vail 7' 668. 625 366 553 39,72 Coker 310 736 563 352 550 39 83 McNair 220 695 542 397 545 38 79 Dixie King III 679618 3 25 541 38 76 Coker 304 733 566, 304 534 40 77 Deltapine 55. 653 636 304 531 40 70 Delcot 277 622 636, 328 529 39 77 Deltapine 61 701 577 295 525 39 .75 DES. 24 778 332 40 Brycot 4- 636 351 37 72 Auburn 56 522 277 40 Stoneville 731N 696 42 Belle Nina location. Table 3. Performance of Cotton Varieties in Northern Alabama, Three-~year Average, 197 6-1978 Yield of lint per acre Av, lint Percent Variety Crossville* Belle Mina Winfield Av. percentage.earliness** Lb.. Lb.. Lb.' Lb. Pct. Pct. Hancock 736 540 445 553 39 73 Vail 7 668 634 343 533 38 67 Stoneville 603 653 63.4. 342 529 38 75 Stoneville 213 666 569. 373 520 38 66 Coker 310 736.501.365 509 39 76 Deltapine= 61 701 545 306 494 38 70 Deltapine 26 626 539 348 489 41 61 McNair 220 695 485 345 485' 37 71 Delcot 277 622 508 335 472 39 691 Coker 304 733 446 319 470 40: 70 Deltapine.55 .653 .519 289, 462: 39 62 Dixie. King 1,11 679. 471, 302 460 38, 63 DES 24 778 320 39 Auburn 56 522 308 38 Brycot 4 611 361 38 67 *1977-4978 data. only. **Belle Mna location. Table 4. Performa~nce of~ CottQn Vadtetie8 $n Central and Southern Al baua, 1978 XY.eld oIf lint per acre Ue~d- J4QnxQe. Pi~tt, x~litP Variety Brewton land y ,lle yule Talla~aee Shorter Ay, ecnt~ a Lb. Lb, Lb. Lb,- Lb, Lb, Lb. ~ t Coker 4601 McNair 235 Stoneville 603 DES 24 Vail 7 Coker 304 DES 56 Coker 315 Deltapine 26 lcNair 220 Hancock Brycot 4 Dixie King1III Coker 310 Deltapine 7141 Coker 6118 Deltapine 55 Stoneville 825 Stoneville 213 Deltapine 61 Coker 3114 Rex 731 Coker 420 Delcc t 277 Auburn 56 Stoneville 731N Paymiaster 303 S. C.- Acala SJ-5 C.V. % L.S D..05 971 981 944 1029 996 945 952 874 1045 869 978 933 976 873 687 837 807 895 967 792 939 733 832 877 832 11,6 147 542 681 466 452 3 25 398 394 463 275 386 366 333 365 310 536 513 427 425 376 309 334 414 448 40.3 N,S. 580 601 677 610 594 580 583 576 632 558 566 648 684 564 535 509 529 582 592 568 614 466 477 528 550 910 73 "728 775 723 659 741 683 701 718 790 651 710 765 687 753 736 682 780 750 672 799 643 597 582 685 701 1195 115 767 405 627 588 665 638 640 602 519 719 521 466 413 667 694 542 572 334 356 568 348 543 342 600 604 17,7 137 415 456 431 418 402 426 377 378 335 403 428 421 428 381 324 388 324 437 425 333 384 452 370 413 372 463 416 361 307 13.6 75 667 650 645 626 620 612 608 602 599 598 595 594 592 591 585 578 573 571. 565 561 544 534 508 39 39 39 40 39 38 39 40 41 38 39 38 38 39 41 37 40 39 39 38 41 35 37 37 36 39 37 38 38 :cent iness* pct. *Prattville location only. 85 90 88 83 84 83 83 85 84 87 86 85 84 84 87 88 88 87 86 83 82 84 81 82 82 ~ I Table 5. Performance of Cotton Varieties in Central and Southern Alabama Two--year Average, 1977-78 Yield of lint per acre Head - Monroe" Pratt- Variety Brewton land* * u ville ville Tallassee* Shorter* Av Lb, Lb, Lb, Lb, Lb, Lb. Lb Hancock 946 366 694 684 521 428 66 Stoneville 603 792 466 703 711 627 431 66 DES 24 789 452 691 713 588 418 64 Vail 7 812 325 673 712 665 402 64 Deltapine 26 792 275 746 786 519 335 64 McNair 220 693 386 684 703 719 403 63 Dixie King 111 754 365 730 719 413 428 6240 Coker 315 658 463 699 713 602 378 6204 Deltapine 61 672 309 713 787 568 333 6173 Coker 304 686 398 670 671, 638 426 6134 Coker 310 729 310 632 692 667 381 6073 Brycot 4 717 333 678 747 41-3 421 6063 Deltapine 55 687 427 588 747 572 324 5963 Stoneville 213 730 376 678 673 356 425 5913 Coker~ 3114 659 334 627 653 348 384 5494 Rex 731 672 414 499 583 543 452 5463 Delcot 277 786 623 679 600 413 6493 Auburn 56 753 637 643 604 372 6303 'erc ent 1 iness** Pct. 82 83 80 77 77 83 76 81 77 78 84 77 82 81 77 82 82 75 *1978dte oQnly. **Prattytlle lQcat tQn Qnly. *o CD 0 r 0 0 CL 0 ~v J v v %J % J 4 NW ~ OD OOO. WW...LON v'I VJco 00 J I- WlJ O C 0% a%00 0-Lt. N N . t .t~o 00oO v v v o".,".t000 00 trti ~ i--o yw y o v~,Lo vvw t Ft CD CD 'CD H ri * CD ID 0 C) c4 rt nC HnD0CDtt-+ tC. 'ivtDoCD0CDP1HCD C tD0 N ) 1.11 H H-+ ON ON H H C W }-rH 00Lo000 O 0 oH%0 D wHo% oNH% ? cr0HONOoON CDn'M .om " vJ C' ~ V Oo D L V to2 j .- + W~tO O N % DO.a'Ui 00V .P0 ' vwo ' C'nC v ~ V V I - oV V ., - Hnww - H ON 0. . at o N0 0 r I-'C ~ oV 01 .s0 of$.V 0L w t t wws 00. w.s.s I . H4SHO NvI0ONHC0LnV C CD HO CD CD r H CD CD CD 0 1 Ft CD K 0 t 1 mD CD CD 1 1 CD CD CD H co CD C 1 0 CD 0 0 Ft Ft 0 CD 1 Ft H .t 3* www rw.rrP% Lo w - P% %D %D 0 o o awo %D 0 N4--a Table 7. Percentage of Plan~ts Showing Symptoms of Fusariutm Wilt- Average wilt ercentage _-yr 3'yr 6-yr 78ryr 8v.y Variety 1978 1977-78 1976-78 l973.78 1972-78 1971-78 1970 Auburn 56 10.9 13.3 10.0 19.7 18.3 18.3 21 Stoneville 213 17.3 30.8 26,0 40.6 39.2 40.845 Coker 310 12.3 16.1 14.6 23,4 21.5 27.7 24 Stoneville 603 11,1 18.5 13,9 17,3 17.8 21.7 23 Delcot 277 2.6 9.2 10.5 15,4 14.8 17.7 23 McNair 511 5.8 12.3 12,5 19,0 18.7 21.0 Coker 304 10.5 14.2 12.2 21.1 20.9 Deltapine 55 4.8 16,6 13.9 22.0 21.3 Dixie King ILL 8,9 15.6 12.8 19.8 Hancock 40.3 47.6 42,0 51.1 Brycot 4 39.0 36.3 34,5 Deltapine 26 7.2 5,6 4.4 Deltapine 61 5.5 10,2 13,2 McNair 220 6.6 11.6 9.5 Stoneville 731N 19.1 33,7 34,2 Vail 7 25.6 31.8 31,1 Coker 315 7.7 17.0 Coker 420 6.9 15,6 Coker 3114 13.2 19,8 Rex 731 8.5 16,3 Coker 6118 3.4 Coker 4601 5.5 Deltapine 7141 7,6 Deltapine 7132 5.2 Gumbo 9.6 MscNair 235 6.7 1/Data were taken from afield severely infested with the htefusariuiwu .Ilt fungusadro ko.niaoePa Breeding Unit, Tallassee? Alabama, -78 1.1 1.8 Lt Tabl 8.Fiber Properties of Cotton Varieties at Belle Mina, Alabama., 1977 Span. length Stelometer Variety 295% E 1 Micronaire In. cN/tex %Units Auburn. 56, 1..05 18.13 6.86 4.62 Brycot 4.1.09 18.88 6.34 4.65 Coker 304 1.13 20.52 7.16 5.10 Coker 310 1.11 20.49 6.48 5.00 Coker 315 1 09 19.90 6.63 4.95 Coker 417 1.12 19.93. 6.59 4.85 Coker 3114 1.10 19.56- 6.92 4.82 Coker 42.0 10.09 21.26 6.81.4.60 Delcot. 277 1.12 20.22 9.81 4.40 Deltapine 16 1.06: 18.98 9.09-5.10 Deltapine 26 1.07 19.61 7,06 5.00 Deltapine 55 1.07 20.51 7.28 4.72 Deltapine 61 1,.08 20..04- 9.36 5.25 DES 24- 1.10 19.92 8.27 4.87 Dixie King III 1,03 19.91 7.07 4.65 Hancock 1903 19.27 7.19- 4.75 McNair 220 -- 1.06. 20.54 61,64 5.07 McNair 511 1.04 20.46 7.31 5.15 McNair 612 1.09 18.96 6.98 4.8 2 Rex 731 1.07 15'.94 8.08 4.80 Stoneville- 213 1.,06 18.88 8.53 5.00 Stoneville 603 1.04 19.33 6.80 5.10 Stoneville 731N* 1.06 17.85 5160 5.15 Vail 7 1.06 18.09 6.28. 4.90 Table 8. Tabl 9.Fiber Properties of Cotton Varieties at Winfield,. Alabama, 1977 Span length Stelometer Variety 24.5%. T E 1 cronaire .1- In. cN/tex %Units Auburn. 56 1.03 17.11 7.48.3.80 Brycot 4 1.05 16.76. 6.09 4.15 Coker 304 1.11 18.40 7.72.3.75 Coker 310, 1.08 19.45 6.84-4,05 Coker 315 1.11 18.24 6.50 4.27 Coker 417 1.10 18.47 6.61 3.80 Coker 3114 1.12-18.89 7.28 4.10 Coker 420 1.14 20.66. 7458 3.95 Delcot 277 1.13 17.85.41 3.62 Deltapine 16 1.09- 17.42 9.61 4.10 Deltapine 26 1.06 17.87 7.04-4.40 Deltapine 55 1.08 17.33 7.45 3.75 Deltapine. 61 1.10 19.69 8.56 4.17 DES= 24 1.07 17.e71 7.66. 3.95- Dixie King III 1.07- 17.4 3 7.01 3.8 5 Hancock 1.04 16.94- 7.19 3.85 McNair 220 1 Q7 17.28 6.99. 4.05' McNair- 511 1. 04 17.96 7.a53 3.95. McNair 612 1.08. 1T.84 6.96 4.32 Rex 731 1.12' 14.41 7.58 4.00 Stoneville 213 1. 08 16.20 7.97 4.20. Stoneville 603 1.1Q 17.87 6.64 4.15 Stoneville 731N 1 tQ4 16 .93 6.,23 4.07 Vail1 7 1.07 16.5 2 6..18 4.25 Table 9 0 Tabl 10.Fiber PrQpertiaes of Cotton Varieties at Brewton, Alabama,. 1977 Span length Stelometer Variety 2.5% T E 1 icronaire. In. cN/tex . Units Auburn. 56 1,12 15.62 8.72 4.55 Brycot 4 1.13; 17.07 8.02.3.87 Coker 304 1.17 17.62 7.86-3.50 Coker 310 1.21 18.-82 7.61 4.13 Coker 315 1,20 17.59 8.05 3.50 Coker 417 1.19 18,74 7.76 3.75 Coker 3114 1.17 19.26 8.64 3.75 Coker 420 1.18 19.43 8.51 3.95 Delcot 277 1,19- 18.78 10.70 3.45 Deltapine 16 1.17 17,42 10.32 3.27 Deltapine 26 1.16 18.77 8.19 3.55 Deltapine 55 1,15 18.28 8.79 3.45 Deltapine 61 1.17" 17..42 10.32 3.27' DES 24 1.17 18,69 9.31. 3.85 Dixie King III 1.12 19.69 8.13 3.7 2 Hancock 1.07 17.87 8,13 4,00 McNair 220 1.13 17.62 7.86 3.80 McNair 511 1.13 18938 8.60- 4.33 McNair 612 1,12 17.84 8,16 3.75 Rex 731 1.10. 15.55 9.11 4.10 Stoneville 213 1.12 17.713 8.94--3.80O Stoneville 603 1.11 19.06 8,25 4.12 Stoneville 731N 1,14 17.07 7.83 3.72. Vail 7 1.11 17.Q2.' 7.77 3.75- Table 10. Table 11. Fiber Properties of Cotton Varieties at Headland, Alabama, 1977 Span length Stelometer Variety 2.5% T Eicronaire In. cN/teeUnits Auburn: 56 1.05' 15.97 7.26 4.65 Brycot 4 1.04 17.49 7.18 5.25 Coker 304 1.06- 17.37 7.64 4.67 Coker 310 1,10 17.93 7.93 4,57 Coker 315 1.11 18.30 .737 4.37 Coker 417 1.06 17.32 6.81 4.42 Coker 3114 1,09 17.12 17,44.4.50 Coker 420 1.09 17.55 742. 4.12 Delcot 277 1.07 17.18 9.77 4,05 Deltapine 16 1.08 16.47 8.98 4,65 Deltapine 26 102.0 17.07 7.99 5.15 Deltapine 55 1.02 16,85 7,55.4.85 Deltapine 61. 1.06 18.41 8.54 4.78 DES~ 24 1.06. 17'e44, 7.99 4.80 Dixie King III 0.98 16,52 6.98 4.20 Hancock 1,05 15.44 7,55 4,35 McNair 220' 1Q6 17.31 7.21. 4.55 McNair 511. 1.02_ 16.71 7.94Q 4.73 McNair 612. 1.03 15.,51. 7.19 4.33 Rex 731 1,04 15.31. 7.64 4.68 Stoneville 213 1,06 16.24 8102 4.8 5 Stoneville 603 1..05. 16.34 7.20 4.75 Stoneville. 731N 1.01 16.66 6-.64 5.33 Vail 7 1,04 15.68 7.26 4.90 Tabl 12.Fiber Properties of Cotton Varieties at Monroeville, Alabama, 1977 Span length Stelomer Variety 21.5% T E Micronaire 1 1 In. cN/tex %Units Auburn 56 1,10 15.91 9,22 4.40 Brycot 4 1,08 18.16 7,39 4.10 Coker 304 1.12: 17.11 7.45 4.22 Coker 310 1.14 17.21 7.42 4.15 Coker 315 1,14 17.02 7.58 4.33 Coker 417 1.13 17,96 7.39 4.30 Coker 3114 1.18 18.39 8.67 4.10 Coker 420 1.14 18,38 8.44 4.40 Delcot 277 1.15 17.72 10.32 4.05 Deltapine 16 1,16 17.12 10.26 4,15 Deltapine 26 1.10 18.19 8.78 4.10 Deltapine 55 1.12.16.32 8.26 4.25 Deltapine 61 1.10 16.54 10.32. 4.35 DES..;24 1.15 17,48 9.20 4.*52, Dixie King III 1,10 16,96 8,04 4.10 Hancock 1.115 17.11 8,12. 3.93 McNair 220 1,13 17.43 7.35 4.45 McNair 511. 1.1Q 17, 07 8.91 4.48 McNair 612 1.10. 17,11 7,22 4.70- Rex 731. 1.11 14,62 9.10 5.00 Stoneville 213 1.09 15,44. 8.61 4.35 Stoneville 603 1.12 17.93 7,37 3.95 Stoneville 731N 1.12 17.20 7.86 4.15 Vail 7 1.08 16,81 7..51 4.15 Table 12. Table 13. Fiber Properties of Cotton Varieties at Prattville, Alabama, 1977 Span length. Stelometer Variety 245% T 1 E Micronaire In. cN/tex %Units Auburn. 56 1.04 16,82 6.66 4.65 Brycot 4 1,07 16.56 5.97 4.80 Coker 304.1,12 17.16 6.96 5.03 Coker 310 1.13 18.84 5,94 4.80 Coker 315 1,08' 19.65 6.03 5.20 Coker 417* 1,16 18.15 6.96 447 Coker 3114 1.07 17,48 7.85 4.85 Coker 420 1.13 18.98 7.47 4.65 Delcot 277 1,12 18.76 8.50 4.25 Deltapine 16 1,14 17.92 8.67 4.87 Deltapine 26115 18.07 8.12 4.55 Deltapine 55 1,05 18,13 6.93 4.67 Deltapine 61. 1,10 17.53 9.86 5.10 DES, , 24 1.914 19.28 7,08 4.60 Dixie King: 111 1, 06 17.91 6.55 4.85 Hancock 1,-0.3 17,67 7,04 5.00 McNair 220 1,06 19.61 5,97. 5.40 McNair 511 1.07 18,22- 7.07 5.18 McNair- 612. 1.07 18.57' 6,09 5.25 Rex 731 1.07 14.94 7.51 4.55 Stoneville 213 1.07 17.36 7,37' 5.05 Stoneville 603. 1.07 18411 6,21 4.85 Stoneville 731N 1.07. 17.78 6.20 5120 Vail 7 1,08 16.75 6.64 5.15 Source of Seed for the 1978 Cotton Variety Tests Variety Seed source Auburn University (Alabama) Agricultural Auburn 56 Experiment Station Auburn, AL 36830 Deltapine 55. Deltapine 26 Delta and. Pine Land Co. Deltapine 61 Scott, MS 38772 Deltapine 7141 Sto-neville 213 Stoneville 603 Stoneville Pedigreed Seed.Co Stoneville 825 Stoneville, MS 38776 Dixie King III Coker 310 Coker 6118 Coker 304= Cokerts. Pedigreed'Seed.Co. Coker 315 Hartsville, SC 29550 Coker 420 Coker 3114 Coker 4601 Delta Center Portageville, MO 63873 McNair 235 McNair Seed Co. McNair 220 Laur inburg,- NC" 28532 Hancock West Tennessee Experiment Station Jackson, TN 38301. Brycot 4 Bryco Vail 7 Jonesboro, AR 72401 DES 24 Delta Branch- Experiment Station DES 56 Stoneville, MS 38776