. . . ./ . .. r .. . . / . / . . . . / . . N.''~~~~~~~~ ~ ~~~~~~~~ N N . .N. . . . .N .'N ' * * ' ' N ' ' ' t.. . . . . .. . . . . . . .t i t t if./ f t i f i ~ f i NNrnN a dSol DeNarmenta Series "No. NN N1 NNFNbruary 1987 Alabama/it fgititra ~erm Station.#iAuburn fit ti if tffit '' LowellNN NN NN T.NNNNNNNDre tor Au urNNNNNNNNN la am TABLE OF CONTENTS Page INTRODUCTION................................................. 1 EXPERIMENTAL CONDITIONS.1 EXPLANATION OF DATA ...................................... 2 NEW AND EXPERIMENTAL VARIETIES.............................3 STATISTICAL ANALYSIS.........................4 LOCATIONS OF EXPERIMENTS....... ....................... 5 TABLE 1. Performance of Cotton Varieties at Belle Mina, Alabama, 1986 .................................. 6 TABLE 2. Performance of Cotton Varieties at Crossville, Alabama, 1986.................................. 7 TABLE 3. Performance of Cotton Varieties at Prattville, Alabama, 1986..... .......................... 8 TABLE 4. Performance of Cotton Varieties at Tallassee, Alabama, 1986 .................................. 9 TABLE 5. Performance of Cotton Varieties at Shorter, Alabama, 1986 .................................. 10 TABLE 6. Performance of Cotton Varieties at Monroeville, Alabama, 198611 TABLE 7. Performance of Cotton Varieties at Brewton Alabama, 1986 .................................. 12 TABLE 8. Performance of Cotton Varieties at Headland, Alabama, 1986...................................... 13 TABLE 9. Performance of Cotton Varieties in Alabama, Average of All Locations.14 TABLE 10. Percentage of Plants Showing Symptoms of Fusarium Wilt, Tallassee, Alabama.........................15 TABLE 11. Fiber Properties of Cotton Varieties at Belle Mina, Alabama, 1986.........................16 TABLE 12. Fiber Properties of Cotton Varieties at Prattville, A1labama, 1986.................................... 17 TABLE 13. Fiber Properties of Cotton Varieties at Brewton, Alabama, 1986..................18 TABLE 14. Sources of Seed for the 1986 Cotton Variety Tests. 19 RECOMMENDED COTTON VARIETIES FOR ALABAMA...........20 Information contained herein is available to all persons regardless of race, color, sex, or national origin 1986 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 recommended by Auburn University to farmers. Every effort is made to test the varieties and present the results in an unbiased manner. EXPERIMENTAL CONDITIONS A randomized block experimental design with four replications was used at each location. Plot row length at different locations varied from 40 to 120 feet. Plots were two-row at Prattville, Headland, Belle Mina, Shorter, Tallassee, and Crossville. Single-row plots were used at Brewton and Monroeville. Climatic conditions were hot and dry throughout most of Alabama. For most locations, the 1986 growing season was among the driest on record. Although cotton yields were lower than usual, cotton was less adversely affected than other agronomic crops such as soybeans or corn. Professor of Agronomy and Soils. -1- EXPLANATION OF DATA Harvest of Seed Cotton 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 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 calculated 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 Fiber qualities of all varieties from selected locations were determined by Starlab, a commercial fiber testing laboratory in Knoxville, Tennessee. Span Length. This is the fiber length measured with the digital fibrograph. The 2.5 percent length 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 fibers. The 2.5 percent length is about the same as the classer's staple. Stelometer. T I is a measure of breaking strength of a standard fiber bundle with the holding jaws separated by 1/8 inch. This is a measurement similar to Pressley strength except the figures are in grams per tex. Tex is a size measurement of the fiber bundle. The -2- larger the T 1 , the stronger the fibers. E 1 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. Micronaire tended to be higher than usual for much 1986 cotton. 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 oxysporum 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. 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 charac- terize a variety's wilt reaction. Stoneville 213 and Stoneville 825 have 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 comparisons reported in table 10 do not apply in any way to this disease. NEW AND EXPERIMENTAL VARIETIES The cotton variety tested under the experimental designation GAT 72-56 prior to 1986 has been named Tifcot 56 and released by the -3- Georgia Agricultural Experiment Station at Tifton. Seed will be available for the 1987 season. The experimental line KNX 2019 has been released by Northrup King Co., and named KC 380. Seed will be available for planting in 1987. PD-1 is a variety developed at the Pee Dee Experiment Station in South Carolina. Seed information is available from the South Carolina Department of Seed Certification, Clemson, South Carolina. Stoneville 112 was released in 1985 and seed will be available for 1987. Coker 139 is a new release previously tested as Coker 81-139. Adequate seed will be available for 1987. Both Coker 80-118 and Coker 81-613 are experimental lines. Deltapine 20 is a 1985 release with seed available for 1987. Delcot 344 has been previously tested as Mo 78-344. Adequate seed for 1987 are available. Delcot 390 is also a Missouri release but seed will not be plentiful for 1987. DES 119 has been released by the Mississippi Experiment Station. Seed are available for this season. Arkot 518 previously tested as U Ark 2402, has recently been released by the Arkansas Experiment Station. Seed will not be readily available until 1988. 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 Significant Difference (L.S.D.. 0 5 ). -4- LOCATIONS OF EXPERIMENTS 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 - W.B. Gordon, 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 -5- TABLE 1.. PERFQRMANCF. OF COTTON VARIETIES Ar BELLE MINA# ALABAMA. 1986 2-YR. AV* 3-YR. AVIS DELTAPINE 6L 957 39 836 989 1#006 KC 380 953 37. 84 19062lo DELTAP[NE 50. 943 .- 39 87 [.067[1122 STOMEWILLE 112 931 4L 85 986 995 STUNEVILLE 825, 894 41L92 952 973 P0-I.1 890- 42 88 999 1#039 DES 11L9 889. 40 87 STONEVILLE- 506 885 40 88 912. 982 GA T 8 1-225- 884 41 87 SrTr'EV ILLS Z13. 879 38 8? 924 974 DELTAPINE.90 874 39 91. 901 975 1ELTAPINE 4864 42 88 884 864 COKER 139 849 42 91. 978 ARKOT 51.8 833 41. 89 -o MCNA2IR 235 823 41 90 957 979 DELCOT' 31.1 81.4 40 .89 91.5 996 [ELTAP LNE 20' 81.3 40 9z 91.0 987 DELCOT 344- 804 3-9 89 -oa TIFCOT 56 783 38 87 931. 981 DES 422 777 40 90 888 945 COKER 315 764 4186 885 940 COKER 80-11.8 753, 41. 87 7o COKER 81-603 722 42 88lo DEILC0T 3'90 711 38 87 PAYMASTER 145 7.01 40 81 790 832 COKER ,208 697 40 90 908 970 MCNAIR 220 669 39 89 856 912 ACAL.A SJC-1 570 37 87 644 697 TEST MEAN 819 L.S.0. 1. I05) [00 GeV MW- mo -6- TABLE 2. PERF1MIANCE OF COTTON VARIETIES AT CROSSVILUE, ALABAMA, 1986 9 2-YRw AV* 3-YRw. -AV.* VAmRLETY =me NO -IN" LmNT/ACE MLL zARE US . RLL LL jm&* MCNAIR 220 1if,052 39 94 854 932 MCNAIR 235 It046 40 94 809 883 oDE S 119- 1, 026 41 94- ARKQT 518 1, 014- 41l 96- KC 380 997 39 87 807 GAT 81-225 980 40 94 COKER 80-118 973 40 95 DELCOI 311 949 39 91 777 780 DELTAPINE 90 942 40 91 654 752 DELCOT 390 941 39 95 DELCOT 344 936 39 90 PD-I 935 41 92 745 TIFCOT 56 926 38 92 CfKER 139 907 40 93 750 DELTAPINE 50 906 38 92 775 868 STOtEVILL 825 886 40 9 716 839 DELTAPINE 20 885 39 90 78 848 COKER 315 857 40 94 693 838 STONEVILLE 213 853 39 89 655 737 DES 422 850 40 93 752 885 STONEVILLE 506 843 39 87 731 831 COKER 81-613 842 41 91 DELTAPINE 61 828 39 87 718 830 COKER 208 799 39 93 611 702 DELrAPINE 41 751 41 90 713 797 STONEVILLE 112 730 38 85 639 724 TEST MEAN 910 L.S.D . L.051 109 &"WOOD9 -7- TABLE 3. PERFORMANCE OF COTTON VARIETIES AT PRATTVILLE, ALABAMA, 1986 .2?6 2-YR. AV. 3-YR. AV. VARIETY LWNT/AE LT EARaLIS LINT/ACJE- L LIT/ACRE STONEVILLE 825 649 42 d946 1,107 DES 119 648 42-- STONEVILLE 213 643 42, 942 1#113 DES 422 6.3-2 43l 943 1,105 DELTAPINE 90 612 41 972 1,169 STONEVILLE 506 610 41 896 1,054 STONEVILLE 11.2 606 42 - 895 1,075 DELTAPINE 20 601 42 - 868 1038 DELTAPINE 50 600 39 - 900 1,074 MCNAIR 235 588 41 851 943 DELTAPINE 41 583 44- 906 1,062 DELTAPINE 61 583 42 - 919 1,070 MCNAIR 220 575 39 842 1,007 TIFCOT 56 572 41 -- DELCOT 344 566 41.o GAT 81-225 564 41w COKER 139 562 41 - 92Z KC 380 56. 40 833 ARKOT 518 560 41 -su COKER 315 556 42- 895 1,101 COKER 208 531 40 - 851 1.065 COKER 81-61.3 503 40 - DELCOT 311 498 40 836' 971 CQKER 80-11.8 495 42 DELCOT 390 480 41 - P0-I 454 40 -771 TEST MEAN 570 L.S.D. (.05) 72 -8- TABLE 4. PERFORMANCE OF COTTON VARIETIES AT TALLASSEE, ALABAMA, 1986 142-YR.. AVO 3Y Ro 3A VARET LITTg I A& EIL LIl'F T ErILIACE LINTAC MCNAIR 235 431 41 638 735 DELCOT 344 407 40 - COKER 139 384 , 40 - 610 MCNAIR 220 376 40 648 786 DELCOT 311 370 38 505 671 STONEVILLE 112 367 39 - 570 730 GAT 81-225 363 40 KC 380 362 40 646l TIFCOT 56 343 38m DELCOT 390 340 40- COKER 80-i18 333 40 DELTAPINE 90 332 41 686 800 DES 119 328 42 - PD-1 328 40 - 552 COKER 208 324 39 514 699 ARKOT 518 313 40n COKER 81-613 313 41 -o- DES 422 292 41No 558 683 STONEVILLE 213 289 43 - 523 756 STONEVILLE 506 289 40 489 702 DE.LTAPINE 41 283 41 636 777 STONEVILLE 825 270 41 - 535 738 DELTAPINE 20 259 42 - 598 779 DELTAPINE 50 251 39 - 548 728 COKER 315 228 41 - 573 664 DELTAPINE 61 195 42 - 500 689 TEST MEAN 322 L.S*.D. (.05) 116 Ws im =mo -9- TABLE 5 -PERFORMANCE OF COtTON VARIETIES AT SHORTER* ALABAA, 1986 1____2-YR. AV. 3-YR. AV. UARIE RE LT EA.LITT/ PD-L 1,160 40 - 1,115 1.074 COKER 208 1,063 40 1,102 1,099 KC 380 1,052 40 - .049m DELTAPINE 90 1*048 41 - 1,124 1,097 DELCOT 311 1,048 39 1,093 1,060 ARKOT 518 1,044 40 - MCNAIR 235 1,044 40 1,118 1,056 GAT 81-225 1,043 40 - DES 119 1,036 40 - COKER 139 1,012 40 - 979 COKER 81-613 1,009 40 - 0ELCOT 344 1,001 39 - STONEVILLE 825 994 41 - 983 954 TIFCOT 56 989 39 - 1170 1,182 DELTAPINE 41 985 42 - 1,051 1.000 MCNAIR 220 985 39 - 1,027 1,025 DELCOT 390 971 39 - STONEVILLE 112 961 40 - 997 1,024 PAYMASTER 145 949 38 - 903 920 DELTAPINE 50 930 38 - 1,019 998 COKER 80-118 928 40 - I COKER 315 908 40 - 1,107 1*108 DELTAPINE 61 902 40 951 934 DELTAPINE 20 893 39 - 928 921 DES 422 881 39 - 891 956 STONEVILLE 213 864 40 - 1,075 1,026 STONEVILtE 506 860 39 1,041 1,005 ACALA SJC-1 774 37 - 816 840 TEST MEAN 976 L.S.D. (.05) 180 - 10- TABLE 6, PERFORMANCE OF COTTON VARITIES AT MONROEV[LLE- ALA8AMAv 1986 _____2-YR. AV. 3-YR. AV. VAI1 RET-MP -Y I/ LINTA-E ,LaT EARLILLINT/AC61 L&U& KC 380 593 44 - 976 STONEV I LLE 825 578 44 822 924 DELTAPINE 61 578 41 - 895 1,006 DELTAPINE 90 552 42 - 824 1,036 STONEVILLE 506 536 43 - 827 926 STONEVILLE. 213 514 42 - 725 944 COKER 208 513 42 - 880 1,009 DELTAPINE 50 512 42 - 840 937 DES 422 500 44 820 939 STONEVILLE 112 484 42 - 817 891 DELTAPINE 20 483 44 - 881 925 TIFCOT 56 481 42 -l- DES 119 473 44 - DELCOT 390 470 42 - )ELTAPINE 41 467 44 - 773 910 MCNAIR 235 464 42 - 699 884 GAT 81-225 461 43- ARKOT 518 454 44 - COKER 139 443 42 - 903 P0-I 442 44 - 760 DELCOT 344 433 41 - - DELCOT 311 412 42 - 715 826 MCNAIR 220 404 43 - 7.8 922 COKER 80-118 393 43 - COKER 315 375 43 - 800 894 COKER 81-613 345 43 -lo TEST MEAN 475 L.S.D. [.05) 145 Re~r 27P -11- TABLE 7. PERFORMANCE OF COTTON VARIETIES AT BREWTON, ALABAMA, 1986 #memo--- WmwII -m-'Wft -Q 40 . OW WWWQ~tl 4 2-YR AV. 3--YR* AV* VmGIETY4LINT/ACREL ESCR E 4 EFLINT/A GAT 81-225 1,217 41 95 COKER 315 1,207 42 93 1,222 1,203 COKER 81-613 1,197 43 92 - P0 -1 1,188 42 94 1,307 DELCOT 344 1,168 41 93lo DES 119 1,155 42 91lo COKER 139 1,151 4 1 93 1,171 COKER 208 1s147 40 94 1#202 1,217 MCNAIR 220 1,125 40 95 1,171 1,108 TIFCOT 56 1*114 40 94 STONEVILLE 825 1,113 40 94 1,240 1,167 COKER 80-118 1,112 41 93 DELOT 311 1,103 40 93 1,075 1055 DELTAPINE 90 1,103 41 90 1*274 1,263 DES 422 1,100 41 92 1,140 1.053 STO4EVILLE 213 1,088 42 92 1174 1,134 KC 380 t 1,086 40 93 1*223 DELTAPINE 20 1,084 41 93 1,135 1.050 DELTAPINE 41 1,078 42 94 1,174 1,107 ARKOT 518 1#064 39 96- STONEVILLE 112 1.054 41 94 1,130 1,031 DELTAPINE 50 1,043 40 91 1,181 1,168 STONEVILLE 506 1,041 41 94 1,129 1,059 MCNAIR 235 1,033 42 95 1,106 1,034 DELCOT 390 1,000 40 91 DELTAPINE 61 996 39 91 1,121 1,096 TEST MEAN 1106 L.S.D. (.05) 122 art. owwwma m-0q5mw -12- TABLE 8. PERFORMANCE OF COTTON VARIETIES AT HEADLAND, ALA8AMA, 1986 1982-YR. AV. 3-YR. AV. .VAUBSIE .- . .LINT/A E L N EALIE LITACiL KC 380 787 41 - 1,012 STONEVILLE 506 762 41 965 1,065 TIFCOT 56 731 41 - COKER 208 714 42 - 939 1,071 STONEVILLE 825 709 4L 980 10116 DELTAPINE 50 700 42 - 962 1,079 COKER 81-613 689 45l DELCOT 31.1 682 40 - 942 1,025 STONEVILLE 112 677 40 - 908 1,040 STONEVILL.E 213 670 43 - 931 1,072 ARKOT 518 648 40 -A DELCOT 344 642 41 -. DELTAPINE 20 639 41 - 930 1078 GAT 81-225 631 41 -- DELTAPINE 41 627 42 - 1,044 1,165 COKER 139 598 40 - 849 DELTAPINE 90 596 40 - 1,099 1,156 MCNAIR 220 595 41 - 883 999 MCNAIR 235 594 41 - 978 1,067 DES 119 592 43 -mow DELTAPINE 61 586 41 - 942 [o022 COKER 30-118 585 41 - CGKER 315 575 42 - 923 1,079 PD-1 571 40 - 862 DES 422 557 42 - 954 1,114 DELCO? 390 538 41 - TEST MEAN 642 L.S.D. (.05) 116 -1I3- TABLE 9.* PERFORMANCE OF COTTON VARIETIES (N ALAB3AMAt AVERAGE OF ALL LUCATION IIEFCOT 56 742 979 jr033* 40 41 41919 DELIAPINE 90 -157 942 1,031 41 41 41 18 DELIAPINE 50 736 912 997 40 39 39908 COKER 208 124 8-16 979 40 40 40920 COKER 3L5 684 887, 97(8 to-1 42 42918 STU)NEVILLE"825 762 1397 9711 41 41 41921 SU-ONEVILLE 213 125 869 910 41 41 41898 MCNAIR 220 122 880 961 40 40 40931 DELTAPLNE 41 705 898 960 42 43 43910 DES 422 699 868 960 41 41 41920f DELIAPINE 61 7.03 819 951 40 41 40888 DELIAPINE 20 11 819 953 41 41 41929 STONEVILLE 506 728 87(4 953 40 .40 40908 MCNAIR 235 153 895 948 41 40 4t0931t PD-I 746 889 944* 41 41 41918 SSTONEVILLE 112 726 868 939 40 40 40888 DELCOT 311 734 857 923 40 39 40910 KC 380 7199 951 - 0 40 886 COKER 139 738 895 -4t 40 920 DELCOU 344 745- - 40 -- 9 DES 119 768 -- 42 -- 9 DELCOI 390 681 -- 40 -- 9 GAl 81-225 768 - 41 -- 9 ARKOT 518 741 -- 41 -- 9 COKER 80-118 696 -- 4 1. -- 9- COKER 81-613 102 -- 42Z 9 THESE VARIETIES AT 2 LOCATIONS ONLY PAYMASTER 145 825 046 876 39 3.9 39810 ACALA SJC-1 .612 130 169 37 38 39878 37 33 36 356 3 5 it 34 39 16 37 33 37 37 34 14 36 *Grown at all locations in 1986 but at only two locations in previous years. Table 10. Percentage of Plants Showing Symptoms of Fusarium Wilt, Tallassee, Alabama Average wilt percentage Variety yr., 2 yr., 3 yr., 4 yr., 5 yr., 6 yr., 7yr., 8yr., 9yr., 10 1986 1985-86 1984-86 1983-86 1982-86 1981-86 1980-86 1979-86 1978-86 1977 Pct. Pct. Pct. Pct. Pct. Pct. Pct. Pct. Pct. Pc Stoneville 213 54.0 47.0 35.8 32.6 31.2 27.9 33.7 37.6 32.7 Deltapine 61 57.2 51.3 36.3 30.7 29.0 25.4 26.0 26.1 23.9 McNair 220 28.5 20.8 14.5 15.5 17.1 13.8 17.0 16.7 15.6 Coker 315 46.0 34.9 25.1 25.7 24.2 20.9 24.3 24.5 22.6 22 Deltapine 41 29.5 17.7 21.5 18.4 18.5 17.0 22.0 22.6 20.8 McNair 235 18.6 13.7 11.5 10.9 12.4 10.9 13.3 13.4 12.7 Stoneville 825 64.0 74.8 62.9 54.8 51.3 45.2 50.5 50.6 Delcot 311 11.2 7.2 6.4 7.5 7.8 6.7 9.4 Stoneville 506 24.2 16.3 12.4 12.6 12.4 11.1 14.3 Coker 208 44.5 43.3 31.5 29.8 28.4 23.3 Deltapine 90 28.0 14.3 12.1 11.4 11.4 11.1 Deltapine 50 41.8 24.3 20.8 19.5 18.1 DES 422 15.2 10.1 9.9 11.2 Deltapine 20 35.0 18.6 13.8 19.4 Stoneville 112 25.2 16.5 13.6 Coker 139 39.2 22.8 PD-1 50.0 42.3 Coker 80-118 14.0 Coker 81-613 28.2 Delcot 344 12.5 Delcot 390 31.8 DES 119 24.5 GaT 81-225 29.8 Tifcot 56 53.2 Arkot 518 43.8 Data were taken from a field severely infested with the fusarium wilt fungus and root-knot nematodes. r., 14 yr., -86 1974-86 t. Pct. *.2 38.9 .6 ..9 Fiber Properties of Cotton Varieties at Belle Mina, Alabama, 1986 Variety Micronaire Fibrograph Stelometer 50% 2.5% T1 El Reading In. In. g/tex Pct. Coker 208 5.1 0.51 1.08 19.14 7.5 Coker 315 4.9 .53 1.15 22.50 6.3 Coker 80-118 5.3 .54 1.11 21.88 6.5 Coker 139 5.0 .55 1.13 19.65 6.5 Coker 81-613 4.9 .55 1.11 21.93 6.5 Deltapine 20 5.4 .56 1.11 18.46 8.8 Deltapine 41 5.0 .56 1.16 18.72 7.0 Deltapine 50 5.3 .54 1.10 19.91 8.8 Deltapine 61 4.4 .55 1.16 21.42 8.0 Deltapine 90 5.1 .54 1.14 23.23 6.8 McNair 220* 4.4 .57 1.17 21.11 6.5 McNair 235 4.8 .56 1.17 21.16 7.3 Stoneville 112 5.5 .50 1.06 19.70 8.0 Stoneville.213 5.1 .51 1.08 19.34 7.3 Stoneville 506 5.3 .52 1.06 19.24 7.5 Stoneville 825 5.5 .51 1.08 17.53 6.0 Delcot 311 4.8 .54 1.09 21.21 9.0 Delcot 344 4.0 .60 1.28 23.44 7.0 Delcot 390 4.3 .59 1.19 20.90 7.3 PD-1 5.2 .53 1.13 22.71 6.5 DES 119 5.2 .55 1.14 19.76 7.8 DES 422 5.2 .51 1.01 18.61 7.8 Tifcot 56 4.7 .55 1.18 21.99 7.0 KC 380 5.4 .55 1.18 21.51 6.8 Arkot 518 5.4 .55 1.13 18.62 7.8 GaT 81-225 5.3 .55 1.08 21.42 6.8 Paymaster 145 5.1 .48 0.97 18.36 7.5 Acala SJC-1 4.4 .61 1.23 24.69 6.8 Fiber samples from Crossville, Alabama. -16- Table 11. Fiber Properties of Cotton Varieties at Prattville, Alabama, 1986 Variety Micronai re Fibrograph Stelometer 50% 2.5% T1 El Reading In. In. g/tex Pct. Coker 208 4.4 0.52 1.06 19.13 5.5 Coker 315 4.4 .56 1.10 22.76 5.5 Coker 80-118 4.9 .51 1.07 20.48 4.8 Coker 139 4.7 .56 1.09 21.51 5.3 Coker 81-613 4.6 .56 1.11 22.79 5.3 Deltapine 20 4.4 .52 1.04 21.16 7.3 Deltapine 41 4.8 .50 1.05 20.33 5.8 Deltapine 50 4.9 .53 1.10 21.16 6.0 Deltapine 61 5.0 .54 1.11 22.56 5.5 Deltapine 90 4.7 .54 1.08 21.95 6.0 McNair 220 4,7 .50 1.07 22.59 5.5 McNair 235 4.5 .55 1.10 20.90 5.5 Stoneville 112 4.8 .52 1.06 20.59 5.8 Stoneville 213 5.1 .52 1.06 19.76 6.5 Stoneville 506 4.6 .52 1.08 22.00 6.3 Stoneville 825 4.7 .52 1.09 19.38 5.0 Delcot 311 4.7 ..52 1.06 19.03 5.0 Delcot 344 4.9 .56 1.09 21.67 5.8 Delcot 390 4.9 .54 1.10 24.48 6.5 PD-I 4.6 .54 1.09 23.03 4.8 DES 119 4.7 .55 1.11 21.41 8.0 DES 422 4.9 .50 1.06 19.77 5.5 Tifcot 56 4.1 .57 1.11 21.42 5.8 KC 380 4.2 .54 1.06 22.35 8.0 Arkot 518 4.3 .52 1.10 19.81 5.5 GaT 81-225 4.5 .54 1.09 20.95 5.0 -17- Table 12. Table 13. Fiber Properties of Cotton Varieties at Brewton, Alabama, 1986 Variety Micronaire Fibrograph.. Stel ometer 50% 2.5% T1 1El Reading nIn. g/tex Pct Coker 208 4.1 0.56 1.11 18.04 7.0 Coker 315 3.8 .56 1.18 18.10 6.3 Coker 80-118 4.2 .58 1.17 19.29 7.0 Coker 139 4.0 .55 1.14 18.62 7.3 Coker 81-613 4.2 .60 1.18 19.09 7.3 Deltapine 20 4.0 .52 1.10 16.13 9.3 Deltapine 41 4.4 .53 1.12 19.92 7.5 Deltapine 50 4.4 .59 1.17 17.06 9.3 Deltapine 61 4.2 .59 1.18 18.98 7.3 Deltapine 90 4.0 .60 1.15 20.90 6.5 McNair 220 4.0 .56 1.14 18.77 6.5 McNair 235 4.4 .57 1.12 18.98 8.0 Stoneville 112 4.2 .57 1.13 18.41 7.8 Stoneville 213 4.4 .55 1.12 17.48 8.8 Stoneville 506 4.6 .51 1.11 17.53 7.8 Stoneville 825 4.4 .57 1.16 18.10 6.5 Delcot 311 4.0 .58 1.10 19.81 9.5 Delcot 344 4.2 .57 1.16 19.60 7.3 Delcot'390 4.1 .58 1.14 20.02 7.5 PD-1 4.1 .55 1.16 20.74 7.0 DES 119 4.4 .55 1.11 17.84 9.8 DES 422 3.9 .58 1.17 18.46 7.8 Tifcot 56 4.6 .57 1.12 16.70 6.5 KC 380 5.2 .55 1.14 18.31 6.3 Arkot 518 3.9 .54 1.16 18.41 7.0 GaT 81-225 4.0 .57 1.16 19.45 6.8 -18- Table 14. Sources of Seed for the 1986 Cotton Variety Tests Deltapine 61 Deltapine 41 Deltapine 90 Delta and Pine Land Co. Deltapine 50 Scott, Mississippi Deltapine 20 Stoneville 213 Stoneville 825 Stoneville Pedigreed Seed Co. Stoneville 506 Stoneville, Mississippi Stoneville 112 Coker 315 Coker 208 Coker 81-613 Coker's Pedigreed Seed Co. Coker 139 Hartsville, South Carolina Coker 80-118 Delcot 311 Delcot 390 Delta Center Delcot 344 Portageville, Missouri KC 380 McNair 235 Northrup King Co. McNair 220 Leland, Mississippi DES 422 Delta Branch Experiment Station DES 119 Stoneville, Mississippi PD-1I Pee Dee Experiment Station Florence, South Carolina Tifcot 56 Georgia Coastal Plain Experiment Station GAT 81-225 Tifton, Georgia Arkot 518 Cotton Branch Experiment Station Marianna, Arkansas -19- RECOMMENDED COTTON 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. The recommended varieties are listed in order of 3-year average lint yield. Deltapine 90 Deltapine 50 Coker 208 Coker 315 Stoneville 825* Stoneville 213* McNair 220 Deltapine 41 DES 422 Deltapine 61 Deltapine 29 Stoneville 506 McNair 235 Stoneville 112 Delcot 311 Tifcot 56+ PD-1+ * Not suited for soils where fusarium wilt has been a problem. +Recommended conditionally since they have not been grown at all locations for 3 years. -20-