Agronomy and Soils Departmental Series No. 130 Alabama Agricultural Experiment Station Auburn University Auburn University, Alabama Lowell T. Frobish, Director February 1989 'I,- TABLE OF CONTENTS Page NTRODUCT ION.. .. .. .. .. . .. .. . .. . .. .. .. .. .. . .. .. .. .. . 1 EPERJIILE'rAI.. CONDITIOS. ..... . ............... 1 EXPLANATIONIt OF DATA ............... .2 FNEW AND EXP4ERIMIErAL VARIEIES ....................................... 4 STATISTrICAL ANAYSIS....................... .................. 4 LlCATIOS OF EXPERINIS................................................. 5 TABLE 1. Performance of Cotton Varieties at Belle Mina, Alabama, 1988....................6.. TABLE 2. Performance of Cotton Varieties at Crossville, Alabama, 1988............................................. TABLE 3. Performance of Cotton Varieties at Prattville, Alabama, 1988.... .. ............................. 8 TABLE 4. Performance of Cotton Varieties at Tallassee, Albamea, 1988.............................. ........ 9 TABLE 5. Performance of Cotton Varieties at Shorter, Alabama, 1988................................ 10 TABLE 6. Performance of Cotton Varieties at Mnroeville, Alabama, 1988......................................... 11 TABIE 7. Performance of Cotton Varieties at Brewton, Alabama, 1988. ........................ 12 TABLE 8. Performance of Cotton Varieties at Headlard, Alabaina, 1988....................................... 13 TABLE 9 Performance of Cotton Varieties at Fairhope, Alabama, 1988 ............................................ 14 TABLE 10. Performance of Cotton Varieties in Alabama, Average of All Locations ............................................ 15 TABLE 11. Percentage of Plants Showing Syniptoms of Fusarium Wilt, Tallassee, AlaIharra..................................... 16 TABLE 12. Fiber Properties of Cotton Varieties at Crossville, Albm, 1988...................................... 17 TABLE 139 Fiber Properties of Cotton Varieties at Brewton, Albn, 1988................................. ..... 18 TABLE 14. sou.rces of Se&1 for the'1988 Cotton Variety Tests.0...0019 RECtt4MEOCOMON~s VAREIEBS FOR AIABAMA...............*:* ............... ,20 1988 Alabama Cotton Variety Report A Report of the Performance of Cotton Varieties Tested in Alabama W. C. Johnson 1 INTRODUCTION The Alabama Cotton Variety Test is a continuing evaluation of available cotton varieties from private companies and state agricul- tural experiment stations. Breeding lines that are likely to be released as varieties are also tested. Tests are conducted on units of the Alabama Agricultural Experiment Station by Experiment Station personnel. Cultural practices are those generally recammended by Auburn University to farmers. Every effort is made to test the varieties and present the results in an unbiased manner. ERMCONDITIONS A randomized complete block experimental design with four replications was used at each location. Row length varied at different locations from 40 to 120 feet. Plot width was two-rows at Prattville, Headland, Belle Mina, Shorter, Tallassee, Fairhope, and Crossville, and one row at Brewton and Monroeville. Climatic conditions at all locations were generally favorable during early season. Favorable conditions continued for most of southern Alabama; however, central and northern areas experienced severe drouth and high temperatures for the remainder of the season. 1 Professor of Agronomy and Soils. -1- EXPIANATION OF DATA a oSeedo Tests at Prattville, Brewton, Monroeville, Tallassee, Belle Mina, and Shorter were harvested by a mechanical spindle picker. Tests at Headland and Crossville were harvested by hand. Average yield of seed cotton was determined for each variety at each location. Lint Percentage Seed cotton samples from each variety were ginned on a 10-saw gin. Lint percentage was calculated by dividing weight of lint by weight of seed cotton. Seed cotton samples at Shorter were accidentally destroyed. A consistent lint percentage of 39 percent was used for this location. Yield of Lint Iint yield was determined by multiplying the lint percentage by yield of seed cotton. Fiber qualities of all varieties fro selected locations were determined by Starlab, a commercial fiber testing laboratory in EhKnoxville, Tennessee Spn!M. This is the fiber length measured with the digital fibrograph. The 2.5 percent leth is the average length of the longest 2.5 percent of the fibers, and the 50 percent length is the average length of the longest 50 percent of the f .ibers The 2.5 percent lent is the same as the classer's staple. Stelometer. T 1 is a measure of breaking strg of a standard fi bundle with the holding jaws separated by 1/8 inch. This is a t similar to Presley strength except the figures are in -2- grams per tex. Tex is a size measurement of the fiber bundle. The larger the T 1 , the stronger the fibers. E l measures the percentage stretch before the fibers break. 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 to 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 oxsorum f. vasinfectum (fusarium wilt) was evaluated at the Plant Breeding Unit, Tallassee. The varieties were grown in a field with a high natural incidence of the fusarium wilt disease. During 1988 fusarium wilt was moderately severe. Severity of the disease varies frcm 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 825 has consistently shown a high incidence of wilt. All other reported varieties that have been tested for at least 3 years have acceptable tolerance to fusarium wilt. Verticillium wilt is being more frequently identified in northern Alabama than previously. Varietal camparisons reported in table 11 do not apply in any way to this disease. NEW ANDEXPERIMENTAL VARIETIES Several new varieties were tested in 1988. S 46 is a recently released variety from Sun Valley Seed Co., Tempe, Arizona. Stoneville E 110 was recently acquired by Stoneville Pedigreed Seed Co. and tested previously in the strains tests as BR110. Coker 320 is recently released and was tested previously as an experimental strain under the labels Coker 118-6903 and Coker 118. GAT 225 is still not released and has been tested previously as an experimental strain GT 81-225. Both Deltapine 50-469 and Coker 84-828 are advanced experimental lines and are not released varieties. STATISTICAL ANALYSIS Appropriate analyses of the yield data were made. For each location, the variability in the test was measured and expressed as a percentage of the test mean, i.e., the coefficient of variation (C.V.). An indication of the magnitude of difference between variety averages necessary to be considered a real difference is given for each location. It is designated Least Significance Difference (L.S.D* .05)"- -4- LOCATIONS OF EXPERIM S Tennessee Valley Substation, Belle Mina - W.B. Webster, Superintendent Sand Mountain Substation, Crossville - J.T. Eason, Superintendent Prattville Experiment Field - D.P. Moore, Superintendent E.V. Smith Research Center, Shorter - R.R. Duffeld, Superintendent Plant Breeding Unit, Tallassee - S.P. Nightengale, Superintendent Brewton Experiment Field - J.R. Akridge, Superintendent Monroeville Experiment Field - J.R. Akridge, Superintendent Wiregrass Substation, Headland - H.W. Ivey, Superintendent Gulf Coast Substation, Fairhcpe - E. L. Carden, Superintendent -n5- TAB LE 1. PERFORMANCE OFCTO AITE TBL 198 VARIETY LINT/ACRE LINT EARLINESS LB. PCT. PCT. DELTAPINE 20 KC 380 DELCOT 390 COKER 313 DELCOT 311 TIECOT 56 COKER 139 DES 119 STONEVILLE 453 MCNAIR 235 COKER 84-828 COKER 130 DELTAPINE 50 TERRA C 40 COKER 208 DELTAPINE 41 GAT 225 COKER 320 STONEVILLE 112 STONEVILLE 825 DELTAPINE 50-469 HS 46 DELCOT 344 TERRA C .30 STONEVILLE BR- 110 MCNAIR 220 ARKOT 518 PAYMASTER 145 DELTAPINE 90 STONEVILLE 506 PD 3 ACALA 1517-75 TEST MEAN L.S. D. (05) C. V. 870 862 834 826 777 767 763 756 747 734 727 726 726 723 716 710 703 702 701 700 697 693 689 684 665 641 637 626 826 625 597 585 40 38 39 40 39 38 37 38 41 37 39 40 36 39 38 39 37 38 38 39 37 38 38 35 39 36 37 36 37 37 38 36 MINAo ALABAMA. 1988 2-YR. AV. 3-YR. AV. LINT/ACRE -LINT/ACRE LB. LB. 815 809 759 722 695 691 7383 765 754 696 712 697 697 696 669 709 690 720 718 669 655 683 654 620 676 661 649 531 814 857 743 736 734 722 775 807 738 779 696 734 768 790 777 714 678 714 647 742 735 714 125 13% -6- TAB PERFORMANCE VAR IETY COKER 320 MCNAIR 235 STONEVILLE 453 DELTAPINE 50 COKER 130 DELCOT 390 ARKOT 518 DES 119 GAT 225 KC 380 TIFCOT 56 STONEVILLE 112 DELTAPINE 50-469 SfONEVILLE 506 DELTAPINE 20 MCNAIR 220 DELCOT 311 DELTAPINE 90 TERRA C 30 COKER'315 COKER 84-828 TERRA C 40 COKER 139 DELCOT 344 PD 3 COKER 208 HS 46 DELTAPINE 41 STONEVILLE 825 STONEVILLE BR 110 TEST MEAN L. S.D. (.05) C, V. ,,OF COTON VAR IET IES Ar -CROSVILE# A Ai-19,21 19882-YR. AV. 3-YR. AV. LINT/ACRE LINT EARLINESS LINT/ACRE LINT/AR LB. PCT. POT. LB. LB. 805 771 740 734 723 723 717 703 698 653 651 648 648 645 642 633 631 627 624 617 612 610 608 563 517 510 494 476 465 351 43 42 44 40 43 42 41 44 43 41 41 42 42 40 42 42 41 43 41 43 43 42 42 41 41 41 44 43 42 42 562 551 497 533 531 522 521 530 469 471 497 494 475 472 473. 487 490 493 483 465 501 449 423 424 390 401 716 657 661 685 695 653 647 640 573 598 610 666 641 641 608 637 612 549 510 628 161 Ish -7- UTL~V I C)L31 ~1 w t , . -- - J r jL TABLE 3. PERFORMANCE OF COTTON VARIETIES AT PRATTVILLE, ALABAMA, 1988 1988 2-YR. AV. 3-YR. AV. VARIETY LINT/ACRE LINT EARLINESS LINT/ACRE LINT/ACRE LB.. PCT. PCT. LB. LB DELTAPINE 50 941 38 - 936 824 HS 46 885 41 - - - STONEVILLE BR 110 879 41 - PD 3 873 39 - 947 - DELTAPINE 90 859 40 - 947 835 COKER 130 837 40 - 925 - DELTAPINE 50-469 802 39 - - - STONEVILLE 453 799 41 - 865 - MCNAIR 235 797 39 - 863 771 COKER 320 796 38 - 821 DES 119 793 39 - 859 789 DELCOT 344 788 40 - 816 733 KC 380 784 38 - 968 833 TERRA C 30 783 36 - 851 - COKER 84-828 781 40 - - - DELTAPINE 41 771 41 - 803 729 STONEVILLE 825 771 38 - 873 798 COKER 208 768 38 - 869 756 TIFCOT 56 763 37 - 844 753 GAT 225 755 37 - 820 735 ARKOT 518 754 38 - 784 709 COKER 139 734 39 - 814 730 STONEVILLE 112 717 39 - 812 743 MCNAIR 220 704 37 - 829 744 DELTAPINE 20 690 37 - 826 751 TERRA C 40 687 38 - 809 - COKER 315 680 39 - 792 714 DELCOT 390 675 38 - 747 658 STONEVILLE 506 661 37 - 791 731 DELCOT 311 616 39 - 733 655 TEST MEAN 771 L. S.D. (.05) 115 C. V. 11% -8- TABLE 4. PERFORMANCE OF COTTON VARIETIES AT TALLASSEE, ALABAMA, 198 1988 2-YR. AV. 3-YR. AV. VARIETY LINT/ACRE LINT EARLINESS LINT!ACRE LINT/ACRE LB. PCT. PCT. LB. LB. DELTAPINE 90 1, 101 40 91 739 603 HS 46 1,098 42 94 - - DELTAPINE 50-469 966 41 95 - - KC, 380 957 40 96 629 540 COKER 320 933 40 95 703 - TERRA C 40 929 41 96 554 - STONEVILLE 453 879 44 95 646 - DELTAPINE 50 865 39 97 598 482 DELTAPINE 20 844 43 95 562 461 S'ONEVILLE 112 824 40 91 526 473 COKER 130 819 41 95 616 - MCNAIR 220 814 40 93 578 510 COKER 84-828 800 40 96 - - MCNAIR 235 800 39 96 620 557 DELCOT 390 779 38 96 544 476 DELCOT 311 775 39 94 546 487 COKER 208 751 39 97 515 452 DELCOT 344 747 39 96 539 495 COKER 315 742 43 93 543 438 TIFCOT 56 731 40 92 551 482 ARKOT 518 728 40 95 492 432 SfONEVILLE 506 718 40 95 523 445 DES 119 715 40 96 534 465 DELTAPINE 41 712 41 91 525 445 GAT 225 670 40 95 502 455 SCONEVILLE 825 658 41 94 416 367 COKER 139 643 40 96 506 465 TERRA C 30 629 39 94 525 - PD 3 607 41 94 520 - SIONEVILLE BR 110 547 41 94 - - TEST MEAN 793 L.S.D. (.05) 238 C. V. 21% -9- TABLE . PRFRMANCE OF COTTON VARIETIES AT SHORTER, ALABAMA, 1988 1988 2-YR. AV. 3-YR. AV. VARIETY LINT/ACRE LINT EARLINESS LINT/ACRE LINT/ACR LB. PCT. PCT. LB. LB. DELTAPINE 50-469 696 .39 - - - KC 380 602 39 - 686 808 MCNAIR 235 592 39 - 669 794 GAT 225 586 39 - 645 778 COKER 320 586 39 - 614 - TERRA C 30 579 39 - 617 - DELTAPINE 50 554 39 - 614 720 DELCOT 390 543 39 - 620 737 COKER 315 539 39 - 612 711 DELTAPINE 20 535 39 - 665 741 COKER 130 535 39 - 667 - DES 119 535 39 - 623 761 DELCOT 311 522 39 - 538 708 TERRA C 40 519 39 - 564 - SfONEVILLE 453 509 39 - 601 CnKER 84-828 509 39 - - - MCNAIR 220 501 39 - 622 743 COKER 208 493 39 - 574 737 ARKOT 518 490 39 - 556 719 DELCOT 344 474 39 - 500 667 TIFCOT 56 455 39 - 594 726 DELTAPINE 90 424 39 - 568 728 HS 46 417 39 - - - P0 3 414 39 - 548 - STONEVILLE 823 404 39 - 552 700 COKER 139 403 39 - 555 707 SfONEVILLE 112 382 39 - 516 664 DELTAPINE 41 373 39 - 524 678 STONEVILLE 506 372 39 - 512 628 PAYMASTER 145 363 39 - 414 593 STONEVILLE RR 110 314 39 - - ACALA 1517-75 274 39 - 416 - TEST MEAN 484 L.S.D. (.05) 118 C.V. 17% -10- TABLE 6. PERFORMANCE OF COTTON VARIETIES AT MONRQOVILL'E ALAAMA,. 19 J 1988 2-YR. AV. 3-YR. AV. VARIETY LINT/ACRE LINT EARLINESS LINT/ACRE LINT/ACR LB. PCT. PCT. LB. LB. HS 46 908 42 93 - - COKER 320 866 42 91 906 - DELTAPINE 90 840 41 88 832 739 GAT 225 837 41 89 807 692 KC 380 824 41 90 906 802 MCNAIR 235 802 40 90 914 764 COKER 130 778 43 87 939 - STONEVILLE 453 762 44 89 811 - DELCOT 390 729 40 95 758 662 COKER 208 724 40 87 859 743 DES 119 721 42 90 811 698 DELCOT 344 709 41 88 801 679 COKER 315 704 43 85 733 613 COKER 84-828 687 42 91 - - COKER 139 655 41 88 834 704 TERRA C 40 644 41 89 709 - DELTAPINE 50-469 642 41 88 - - ARKOT 518 639 41 89 644 581 TIFCOT 56 622 39 89 805 697 PD 3 618 41 79 810 - DELTAPINE 41 598 44 88 622 570 DELCOT 311 589 41 88 714 613 SfONEVILLE BR 110 584 42 84 - - DELTAPINE 50 583 39 87 711 645 MCNAIR 220 560 41 89 759 641 SFONEVILLE 112 550 40 90 640 588 SrONEVILLE 825 542 42 89 641 620 TERRA C 30 475 40 86 598 - DELTAPINE 20 453 41 86 650 594 SfONEVILLE 506 419 40 90 627 597 TEST MEAN 669 L.S.D. (.05) 153 C.V. 16% -11- TABLE 7. PERFORMANCE OF COTTON OAP T9TV I T MT 1,& P t LB. HS 46 DELTAPINE 50-469 COKER 206 STONEVILLE'BR 110 DELTAPINE 90 DES 119 KC 380 DELTAPINE 50 COKER 320 DELCOT 344 COKER 84-628 COKER 315 TERRA C 30 GAT 225 COKER 130 PD 3 COKER 139 DELCOT 390. TIFCOT 56 DELCOT 311 DELTAPINE 20 MONAIR .220 TERRA C 40 STONEVILLE 453 DELTAPINE 41 STONEVILLE 112 MCNAIR 235 STONEVILLE 825 STONEVILLE 506 ARKOT 518 725 725 722 714 695 664 646 622 614 607 604 602 599 598 584 584 570 560 548 532 524 522 511 510 506 505 503 499 472 419 VARIETIES AT BREWTON, ALABAMA. 9~ 1988 2-YR. AV. 3-YR. AV. LINT EARLINESS --LINT/ACRE LINT/ACRE PCT. PCT. LB..LB 40 37 39 39 37 37 40 37 39 39 40 40 36 38 41 40 38 39 38 37 38 36 38 40 40 37 39 39 36 39 72 67 64 59 62 69 65 64 72 68 71 66 69 75 70 77 71 67 72 70 72 830 75 75 81 74 73 67 77 85 1,047 856 912 1, 054 8323 922 866 923 830 865 928 936 917 872 912 804 799 806 810 839 746 695 839 815 737 729 11080 938 993 1.'064 696 967 982 995 915 979 904 894 912 857 $315 904 914 838 840 TEST MEAN 563 L. S.D. 05) 8 C. V. 11%. - 12- TABLE 18._PERFORMANCE 'OF COTTON LINT/ACRE LB. VARIETIES AT HEADLAND# ALABAMA) 198 PS.. LB. LB. KC 380 DELTAPINE 90 COKER 84-828 DELCOT 390 COKER 130 STONEVILLE 43 HS 46 PD 3 COKER 208 DELTAPINE 50 STONEVILLE 112 DES 119 STONEVILLE 506 COKER 139 TIFOOT 56 COKER 315 DELTAPINE 20 ARKOT 518 MCNAIR 220 STONEV/ILLE 825 DELTAPINE 50-469 MCNAIR 235 GAT 225 STONEVILLE BR 110 TERRA C 30 COKER 320 DELTAPINE 41 DELCOT 344 TERRA C 40 DELCOT 311 TEST MEAN L.S. D.(.05) C.V. 11 191 1.,105 929 924 896 8381 8375 871 864 863 854 842 842 834 818 816 809 796 790 783 775 767 767 762 755 721 719 710 701 592 41 40 42 41 42 45 42 41 40 39 40 4 1* 42 40 40 42 41 42 40 42 40 39 40 41 39 41 42 41 41 39 804 768 651 632 640 618 656 621 619 624 640 637 630 603 620 624 617 635 598 582 578 531 577 569 598 479 798 711 614 675 647 638 613 681 624 664 593 62.7 632 610, 660 597' 598 594 593 547 828 235 20% - 13- VAR TY ~r ~r 1 I C l ) I~ ~I ,W. W. W- %e reC A A ~ TABLE 9. PERFORMANCE OF CTO VAR IETY HS 46 DELTAPINE 90 DELTAPINE 50-469 TERRA C 40 DES 119 DELTAPINE 50 KC 380 TERRA C 30 DELTAPINE 20 DELTAPINE 41 STONEVILLE BR 110 COKER 130 STONEVILLE 825 GAT 225 COKER 320 COKER 315 COKER 84-828 DELCOT 344 PD 3 STONEVILLE 453 STONEVILLE 112 STONEVILLE 506 MONAIR 220 TIFCQT 56 COKER 139 MONAIR 235. COKER 208 DELCOT 390 DELCOT 311 ARKOT 518 LINT/ACRE_ 960 930 850 8341 827 8B03 791 769 764 737 736 730 706 697 697 691 688 667 659 643 631 620 610 594 591 589 569 537 503 405 VARIETIES AT FAIRHOPE. 1 ALABAMA.- 1988 1988 2-YR. AV. 3-YR. AV. LINT EARLINESS LINT/ACRE LINT/ACRE. PCT.- PCT. LB.- LBI 43 42 42 41 43 40 43 41 43 43 42 44 42 44 43 44 44 43 44 42 40 41 41 41 41 42 43 43 41 42 834 786 845 669 716 704 779 TEST MEAN L. S.-D. (05) C. V. 695 120 1 2% -14- YY~~~I\ VT Y~Y UV~d T7 IW . V . 4b aL- rw TABLE 10. PERFORMANCE OF COTTON VARIETIES IN ALABAMA, AVERAGE OF ALL LOCATIONS YIELD, LINT/ACRE LINT EARLINESS VARIETY 1988 1987-88 1986-88 1988 1987-88 1986-88 1988 1987-88 1986-88 LB. L13 LB. PCT. PCT. PCT. PCT. PCT. KC 380 812 .797 798 40 40 40 84 83 85 DELTAPINE 90 801 745 749 40 40 40 80 81 84 DES 119 728 714 732 40 40 41 85 83 86 MCNAIR 235 706 711 725 40 40 40 86 85 88 COKER 208 680 713 717 40 40 40 83 84 87 DELTAPINE 50 744 702 713 39 38 39 83 83 86 CAT 225 701 677 707 40 40 40 86 86 88 TIFCOT 56 661 690 707 39 39 39 84 84 86 COKER 139 645 684 702 40 40 40 85 85 88 DELTAPINE 20 681 681 690 40 41 41 84 83 86 MCNAIR 220 642 669 687 39 40 40 87 86 88 DELCOT 344 661 651 683 40 40 40 84 84 86 COKER 315 691 681 682 41 41 41 81 82 85 STONEVILLE 825 614 637 679 40 41 41 83 84 86 DELCOT 390 700 674 676 40 40 40 86 86 88 STONEVILLE 112 646 636 666 39 40 40 85 83 85 STONEVILLE 506 597 622 658 39 39 40 87 85 86 DELCOT 311 615 617 656 39 40 40 84 84 86 ARKOT 518 621 612 655 40 40 40 90 88 90 DELTAPINE 41 622 614 644 41 42 42 87 84 86 CORER 130 737 743 - 41 41 - 84 84 - CORER 320 747 716 - 40 40 - 86 85 - STONEVILLE 453 719 702 - 42 42 - 86 85 - PD 3 638 683 - 40 40 - 83 83 - TERRA C 40 685 661 - 40 40 - 87 84 - TERRA C 30 658 651 - 38 38 - 83 82 - STONEVILLE BR 110 617 610 - 41 39 - 79 - - HS 46 784 - - 41 - - 86 - - DELTAPINE 50-469 756 - - 40 - - 83 - - CORER 84-828 704 - - 41 - - 86 - - THESE VARIETIES AT 2 LOCATIONS ONLY PAYMASTER 145 494 517 620 37 38 38 - - - ACALA 1517-75 429 474 - 37 38 - - - - -15- Table 11. Percentage of Plants Showing Symptoms of Fusarium Wilt, Tatlasseoe, Alabama Variesty 1 yr. 2 yr. 5 , 3 yr, 4 yr., 5 yr. , 6 yr. 7 yr., 8 yr., 9 yr., 10 yr., 11y. 12r, 1918 87-88 86-88 85-18 Pet. t PCIt- P2 McNair 220 2.8 22.2. 24.4 21.6 Coker 315 6.0 40.2 42.00 37.4 Deltapfne 41 3.8 31.2 30.5 24.3 McNair 235 18.0 35.6 29.9 24.6 Stoneville 825 62.8 79.9 74.6 77.4 Delcot 311 18.0 24.2 19.7 15.6 Stoneville 506 30.3 44.8 37.8 30.5 Coker 208 36.3 55.9 52.3 49.7 DeLtapine 90 6.8 12.4 17.6 13.3 DeLtapine 50 24.3 38.2 39.4 31.2 Deltapmne 20 7.8 38.9 37.6 28.7 Stoneville 112 8.8 40.7 35.3 28.5 __ Coker 139 29.5 45.0 42.9 33.8 O O elcot 344 17.5 33.0 26.0 DeLcot 390 24.5 42.7 39.1 DES 119 27.8 44.1 37.5 GaT 225 25.3 46.4 41.0 Tifcot 56 43.0 52.3 52.7 Arkot 518 25.8 47.4 46.2 Coker 320 39.3 53.2 KC 380 43.8 57.4 Terra C 30 16.3 46.6 Stoneville 453 51.0 66.7 PD 3 211.0 32.,0 Terra C 40 -17.3 40.2 Stonevitle BR 110 13.0 .50.2 Coker 84-828 16.3 HS 46 22.0 Del-tapine 50-469 18.8 Coker 130 20.3 84-88 83-88 82-88 81-88 80-88 79-88 158U (7785 PVAt. 17.7 31.0 25.2 21.1 69.7 13.4 25.3 41.3 12.2 27.7 23.9 24.3 17.8 30.5 22.6 19.1 63.1 13.0 23.3 38.6 11.7 25.7 25.9 18.7 28.7 22. 1 19.0 59.5 12.4 21.6 36.3 11.7 23.9 Pet. 15.9 25.7 20.5 17.0 53.9 11.0 19.5 31.5 11.4 Pct. 18.2 27.8 24.0 18.3 57.0 12.7 21.1 27.6 24.2 17.8 56.5 16.8 25. 7 22.6 16.8 16.7 25.7 Cotton Varieties at Crossville, Alabama, 1988 Variety Micronaire Fibrora Stelometer 50% 2.5% Ti El Reading In.IIg/tex Pct Coker 130 5.0 0.53 1.12 20.30 8.5 Coker 139 5.4 .55 1.14 19.90 9.0 Coker 208 4.9 .54 1.07 18.15 8.5 Coker 315 4.7 .54 1.16 18.50 8.8 Coker 320 5.3 .58 1.14 20.55 7.5 Coker 84-828 5.1 .55 1.11 19.45 8.8 Deltapine 20 5.1 .54 1.11 19.05 10.0 Deltapine 41 5.0 .54 1. 11 19.40 8.8 Deltapine 50 5.2 .53 1.13 17.85 10.0 Deltapine 90 5.2 .54 1.10 22.25 9.3 Deltapine 50-469 5.0 .51 1.10 17.55 10.0 McNair 220 5.2 .52 1.07 19.35 10.5 McNair 235 5.4 .53 1.12 18.55 8.0 Stoneville 112 4.8 .54 1.11 20.55 8.5 Stoneville 453 5.2 .55 1.11 18.65 9.3 Stoneville 506 5.1 .54 1.13 18.40 9.0 Stoneville 825 5.5 .54 1.11 19.55 8.0 Stoneville BR 110 5.0 .53 1.12 22.20 8.5 Delcot 311 4.6 .56 1.11 21.05 10.5 Delcot 344 4.9 .56 1.16 20.20 8.5 Delcot 390 4.9 .54 1.09 20.15 9.5 HS 46 4.7 .55 1.14 22.10 9.8 PD 3 5.0 .55 1.15 20.75 8.3 DES 119 5.1 .56 1.15 19.55 9.5 Tifoot 56 5.2 .55 1.14 19.65 9.3 KC 380 5.1 .54 1.17 18.20 8.0 Arkot 518 4.8 .52 1.17 19.00 9.3 GAT 225 4.9 .51 1.10 19.15 8.0 Terra C 30 4.9 .53 1.11 18.95 9.8 Terra C 40 4.9 .54 1.12 18.70 10.3 -17- Table 12. Fiber Properties of Table 13. Fiber Properties of Otton Varieties at Brewton, Alabama, 1988 Variety Micronaire Fibrograph Stelcmeter 50% 2.5% T1 El Reading I.n.In. gtex t Coker 130 4.0 0.54 1.16 20.40 7.0 Coker 139 4.0 .53 1.16 19.40 7.5 Coker 208 4.2 .51 1.09 18.25 7.0 Coker 315 3.8 .53 1.18 18.90 7.8 Coker 320 4.1 .54 1. 15 18.95 7.5 Coker 84-828 3.8 .53 1.14 18.20 7 8 Deltapine 41 3.8 .52 1.13 19.15 8.8 Deltapine 50 3.9 .53 1.17 17.75 9.5 Deltapine 90 3.8 .55 1.13 19.50 7.8 Deltapine 50-469 3.6 .53 1.16 17.35 9.5 McNair 220 3.9 .54 1.10 18.45 7.3 McNair 235 4.0 .51 1.11 17.75 7.5 Stoneville 112 3.9 .52 1.13 18.00 8.8 Stoneville 453 4.0 .52 1.11 18.25 8.8 Stoneville 506 3.5 .52 1.13 18.00 8.5 Stoneville 825 4.5 .52 1.10 17.65 7.3 Stoneville BR 110 3.9 .53 1.14 19.55 7.5 Delcot 311 3.9 .54 1.10 19.20 9.3 Delcot 344 3.9 .56 1.19 19.20 7.5 Delcot 390 4.0 .52 1.11 19.25 8.3 HS 46 3.6 .53 1.15 20.00 8.0 PD 3 3.8 .54 1.12 19.60 7.5 DES 119 4.3 .51 1.12 18.30 9.5 Tifoot 56 4.1 .54 1.14 18.30 8.3 KC 380 4.6 .52 1.14 17.75 7.5 Arkot 518 3.9 .53 1.16 18.00 8.0 GAT 225 4.1 .51 1.13 19.05 7.8 Terra C 30 3.8 .52 1.14 17.25 8.8 -18- Sources of Seed for the 1988 Cotton Variety Tests Deltapine 41 Delta and Pine l Co. Deltapine 90 Scott, Mississippi Deltapine 50 Deltapine 20 Deltapine 50-469 Stoneville 825 Stoneville Pedigreed Seed Co. Stoneville 506 Stoneville, Mississippi Stoneville 112 Stoneville 453 Stoneville BR 110 Coker 315 Coker' s Pedigreed Seed Co. Coker 208 Hartsville, South Carolina Coker 139 Coker 130 Coker 320 Coker 84-828 (New Northrup King Co.) Delcot 311 University of Missouri Delcot 390 Delta Center Delcot 344 Portageville, Missouri KC 380 Northrup King Co. McNair 235 ieland, Mississippi McNair 220 DES 119 Delta Branch Experiment Station Stoneville, Mississippi PD-3 Pee Dee Experiment Station Florence, South Carolina Tifcot 56 Georgia Coastal Plain GAT - 225 Experiment Station Tifton, Georgia Arkot 518 Cotton Branch Experiment Station Marianna, Arkansas Terra C-30 Terra International Inc. Terra C-40 Memphis, Tennessee HS 46 Sun Valley Seed Co. Tempe, Arizona -19- Table 14. REPCMENDED OWT[ON VARIETIES FOR ALABAMA The list of recommended varieties given below was prepared by the author of this report and Louie J. Chapman, Extension Agronomist and Acting Department Head, based on variety test performance for at least 3 years. Varieties differ in performance at individual locations, so selection should be based largely on variety performance at a site that most nearly represents the grower's local situation. As a general rule, a yield difference in the order of 10 percent is needed for varieties to be considered truly different. The recommended varieties are listed in order of 3-year average lint yield. KC380 Deltapine 90 McNair 235 DES 119 Coker 208 Tifcot 56 Deltapine 50 Coker 139 McNair 220 Deltapine 20 Delcot 390 Delcot 344 Coker 315 Stoneville 825* Arkot 518 Delcot 311 Stoneville 112 Stoneville 506 Deltapine 41 *Not suited for soils where fusarium ilt has been a problem. -20-