1985 Alabama Cotton Variety Report *w Agronomy and Soils Departmental Series No. 106 January 1986 Alabama Agricultural Experiment Station Auburn University David H. Teem, Acting Director Auburn University, Alabama TABLE OF CONTENTS INTRODUCTION EXPERIMENTAL CONDITIONS EXPLANATION OF DATA....... . . . . . . . NEW AND EXPERIMENTAL VARIETIES .......... . STATISTICAL ANALYSIS .. ... ..... ... . .. ......... LOCATIONS OF EXPERIMENTS TABLE 1. Performance of Alabama, 1985 TABLE 2. Performance of Alabama, 1985 TABLE 3. Performance of Alabama, 1985 TABLE 4. Performance of Alabama, 1985 TABLE 5. Performance of Alabama, 1985 TABLE 6. Performance of Alabama, 1985 TABLE 7. Performance of Alabama, 1985 TABLE 8. Performance of Alabama, 11985 Cotton-Varieties at Belle Mina, Cotton Varieties at Crossville, Cotton Varieties at Prattville, Cotton Varieties at Tallassee, Cotton Varieties at Shorter, Cotton Varieties at Monroeville, Cotton Varieties at Brewton, Cotton Varieties at Headland, TABLE 9. Performance of Cotton Varieties in Alabama, Average o f all1 Lo ca t ion s..............*.....*0 0 00 09 TABLE 10. Percentage of Plants Showing Symptoms of Fusarium Wilt, Tallassee, Alabama. . . . . . TABLE 11. Fiber Properties of Cotton Varieties at Crossville, Alabama, 1985 TABLE 13. Fiber Properties of Cotton Varieties at Brewton, Alabama, 1985 TABLE 14. Sources of Seed for the 1985 Cotton Variety Tests RECOMMENDED COTTON VARIETIES FOR ALABAMA 5 6 7 8 10 11 12 14 15 16 17 18 19 Page 2 3 Information contained herein is available to all persons regardless of race, color, sex, or-national origin 1985 Alabama Cotton Variety Report A Report of the Performance of Cotton Varieties Tested in Alabama W.C. Johnson and Darrell Williams 1 I NTRODUCT ION The Alabama Cotton Variety Test is a continuing evaluation of available cotton varieties from private companies and state agricultural 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, and Crossville. Single-row plots were used at Tallassee, Brewton, and Monroeville. Climatic conditions were hot and dry until mid-June throughout Alabama. July and August were near normal, with September being wetter than usual in southern areas and dryer in northern Alabama. Generally, the season was better than average as evidenced by the 1,033-pound average lint yield for all tests. 1Respectively, Professor and Research Associate (resigned) of Agronomy and Soils. 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 quali.ties 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 1 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 larger the T1 , 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. 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 characterize 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 has been named Tifcot 56 and released by the Georgia Agricultural Experiment Station at Tifton. Seed will not be available for the 1986 season. The experimental line KNX 2019 has been released by Northrup King Co., but not yet named. Some seed will be available for planting in 1986. PD-1 and PD-2 are new varieties 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 has been released and seed will be available for 1986. Both Coker 81-102 and Coker 81-139 are still experimental lines and will not be available for this season. Deltapine 20 is a new release with seed available for 1986. 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 avarages necessary to be considered a real difference is given for each location. It is designated Least Significant Difference (L.S.D.. 0 5 ). 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 -4- TABLE 1. PERFO1MANCE OF C0TT3N V1IEIES AT BELLE MINA, ALABAMA, 1985 Im-wmMO wtww"Mmmnw12 15 _ Wmm omo -" 2-YR. AV. - R V . BLIER fmwwww."oLLNMAC.tE..LLL ARLLNLiS....LIUILA C&LLLLA Lfh Iel LU. LU. DEL TAPINE 50 1191 38 86 212 945 KNX 2019 1171 40 80 - - COKER 3131 1133 42 81 1095 840 COKER 208 1119 41 87 1106 850 PD-1 1108 42 82 1114 854 CUKER 81-139 1107 40 83 - - MCNAIR 235 1090 40 82 1057 835 GAT 72-56 1079 42 88 1080 - COKER 310 1066 40 85 1038 808 MCNAIR 220 1042 39 87 1033 812 STONEVILLE 112 1041 39 83 1027 - DELTAPINE 61 1022 41 88 1031 91 DELCOT 311 1016 38 82 1087 830 STONEVILLE 825 1011 40 88 1013 817 DELTAPINE 20 1008 40 90 1074 846 CUKER 315 1006 41 81 1028 793 DES 422 998 40 85 1029 824 PD-2 986 39 85 - - COKER 304 980 40 86 1049 811 COKER 81-102 970 41 81 1005 - STONEVILLE 213 969 39 88 1021 821 MCNAIR 308 950 39 84 - - STONEVILLE 506 939 39 87 1030 800 DELTAPINE 90 927 39 84 1025 801 QELTAPINE 41 905 43 90 864 684 PAYMASTER 145 880 39 80 897 - ACALA.5 uI ma:L w mO "mm - ao aI .I m -16 . ...N- . TEST MEAN 1016 L.S.D. (.051 165 -ow------1ZLm ow ooa"----*a&gae"*-"m -----am---------000 a TABLE 2. PERFORMANCE OF COTTON VARIETIES AT CROSSVILLE, ALABAMA, 1985 S"w, dw "IwWmM" 2-YR. AV. 3-YR. AV. -..amARIEIIm~m-...wLuLLA RE.LLL I .EARL INEl..LLIL A. EI 41a Ea Elaa LiL 8 LL CaKER 3131 684 38 905 95 DELTAPINE 20 683 39 - 829 708 DELTAPINE 41 676 4 819 658 MCNAIR 220 657 37 871 759 DES 422 653 40 - 902 756 DELTAPINE 50 645 35 - 849 724 STONEVILLE 506 619 36 - 826 12 KNX 2019 617 37 - DELTAPINE 61 609 38 - 831 668 DELCOF 311 606 37 - 696 636 COKER 81-139 593 36 - PD-2 592 35 - MCNAIR 308 577 37 - MNAIR 235 571 36 - 801 700 COKER 310 557 39 - 752 640 COKER 304 556 38 - 807 663 PD-1 555 37 -- STOEVILLE 112 548 36 - 722 STONEVILLE 825 546 37 - 815 684 COKER 315 530 40 - 829 673 COKER 81-102 503 39 - 702 STONEVILLE 213 456 36 - 679 588 C)KER 208 423 36 - 654 572 QELL~AJANE_2Q--------- ----------------------------------------- TEST 4EAN 576 L.S.D. (.05) 131 TABLE 3. PERFODMANCE OF CDOTTON VARUETIES AT PRATTVILLE, ALABAMA, 1985 -a w~mo*afwm-m o o&42000*A ww o o."%" 2-YRo AV. eR V Ov_ G~_EwzARlLEIL.m. am*L "m ALNE.ERLMES LIILAURE _LIAR Lil a ec EJl LUL DELTAPINE 90 1333 42 88 1448 1315 COKER 81-139 1282 41 91 DELTAPINE 61 1256 42 85 1314 118 DES 422 1255 42 91 1342 1243 STrOEVILLE 825 1244 42 88 1336 1206 SIO4EVILLE 213 1241 41 90 1349 119 COKER 315 1234 43 87 1373 1196 DELTAPINE 41 1230 45 89 1302 1210 COKER 310 1213 41 88 1283 1156 COKER 3131 1209 42 89 1312 1158 DELTAPINE 50 1201 40 90 1311 1193 STONEVILLE 112 1185 41 89 1309 STONEVILLE 506 1183 39 91 1276 1162 DELCOT 311 1174 40 91 1207 1108 COKER 208 1171 41 87 1332 1198 DELTAPINE 20 1136 41 89 1257 1161 COKER 304 1124 41 90 1288 1108 MCNAIR 235 1114 40 92 1121 1061 MCNAIR 220 1108 41 92 1223 1126 KNX 2019 1104 41 87 PD-1 1087 42 88 COKER 81-102 1087 42 89 1299 PD-2 1059 39 92 TEST MEAN 1170 L.S.D. (.051 115 C&Y.& --t-mm.-----------moo ------2*ftmf mwlowam~m Ll ---------------- mv am wn----------------- awe~ aw~twWw TABLE 4. PERFORMANCE OF COTTON ARIETIES AT TALLASSEE, ALABAMA, 1985 vo 40 lm owwm&mo mw no*NI1 115. . o o "p m"Wa& wma wm 2-YR. AV. - R V LLft DELTAPINE 90 1040 41 - 1034 1087 DELfAPINE 41 988 43 - 1024 1127 DELTAPINE 20 936 40 - 1039 1073 KNX 2019 930 40a - MCNAIR 220 920 40 - 991 1061 COKER 315 918 42 - 882 1005 COKER 3131 875 41 - 1023 1030 DELTAPINE 50 845 38 967 1045 MCNAIR 235 845 39 - 887 1021 COKER 81-139 837 400 - DES 422 824 40 - 878 953 DELTAPINE 61 805 40 - 937 1034 * STONEVILLE 825 800 41 - 972 1026 PD-1 775 41 - - COKER 81-102 775 40 972 STO4EVILLE 112 773 40 - 912 STONEVILLE 213 757 39 - 990 1036 COKER 310 738 41 - 914 1008 COKER 208 705 38 886 1012 STONEVILLE 506 690 39 - 909 972 COKER 304 671 39 - 789 922 MCNAIR 308 671 38 - - PD-2 658 38 - - TEST MEAN 809 L.S.D. 1.05) 147 TABLE 5. PERFORMANCE OF COTTON VARIETIES AT SHORTER, ALABAMA 1985 admn"am so " "eow 190 85mmamL2a ot ow_ a 2-YR e AV* oR V -wn Oo.0 9m1wARLa I"ft "k . LLNLAGE"mLELL5.5...ALtL LAC& E. ILAE,,AA&BLEU- ~I,,,Ll &~-&~, UL& UEl& UIA LLa L GAT 72-56 1351 41 -1278 COKER 315 1305 42- 1208 953 STO4EVILLE 213 1285 43 1107 933 COKER 3131 1233 41 1112 929 STONEVILLE 506 1223 41 1077 884 DELfAPINE 90 1201 40 1122 956 MCNAIR 235 1193 41 1063 889 C3KER 208 1142 40 1117 881 DELCOT 311 1139 39 1066 884 PD-2 1131 40 -o COKER 81-102 1120 39 1073 DELTAPINE 41 1116 43 1007 808 .DELTAPINE 50 1107 37 1032 889 MCNAIR 308 1096 38 - COKER 310 1085 40 1064 874 PD-1 1071 42,- 1031 843 MCNAIR 220 1070 40 - 1045 870 KNX 2019 1046 40 - STONEVILLE 112 1034 40 'o1056 DELTAPINE 61 999 40 950 834 COKER 304 976 41 1025 840 STO4EVILLE 825 971 42 933 809 DELTAPINE 20 963 41- 935 773 COKER 81-139 947 40 - DES 422 902 40 *993 885 ACALA SJC-l 857 40to 873 TESt MEAN 1089 L.S.D. (.051 348 TABLE 6. PERFORMANCE OF COTTON VARIETIES AT MONROEVILLE, ALABAMA, 1985 .mp..lo ..i-Rw6 mONel2-YR. AV. 3-YR. AV. __.ZALEL .... ... LLILAURE .11. E &RL L NEl.. AL I ILA U E LI L E~tl Es Lfa LL COKER 81-139 1363 41 87" KNX 2019 1360 42 85o DELTAPINE 20 1279 40 88 1147 1071 C3KER 208 1246 41 87 1257 1111 COKER 315 1225 45 87 1153 1019 COKER 3131 1218 42 87 1059 966 DELTAPINE 61 1213 41 82 1221 1047 DELTAPINE 50 1168 38 84 1149 1035 STONEVILLE 112 1150 40 89 1094 C)KER 81-102 1148 42 83 1297 DES 422 1140 41 89 1159 1038 STONEVILLE 506 1118 40 88 1122 994 COKER 310 1112 43 87 1187 1056 > M*NAIR 220 1112 40 90 1181 1018 DELTAPINE 90 1095 41 83 1279 1175 DELFAPINE 41 1079 44 86 1132 1040 PD-I1 1078 43 87 w" COKER 304 1072 42 86 1149 1010 STONEVILLE 825 1067 42 90 1097 985 DELCOT 311 1019 39 92 1033 917 MCNAIR 308 1015 40 89 PD-2 991 39 88 STO4EVILLE 211 936 42 82 1159 1038 TEST MEAN 1131 L.S.D. (.051 239 TABLE 7. PERFORMANCE OF COTTON VARIETIES AT BREWTON, ALABAMA, 1985 4w~w~t at"eeawf mmomL9pwill MD lda_ o 2-YRw AV. 4R V L 0. ecl la. .CLIL 0. t. DELTAPINE 90 1446 42 86 1343 1225 PD- l 1426 45 91 STONEVILLE 825 1367 42 89 1194 1117 KNX 2019 1359 42 88on COKER 310 1335 43 90 1181 1118 DELTAPINE 50 1320 39 8 1230 1138 DELTAPINE 41 1270 44 91 1121 1006 STONEVILLE 213 1260 41 88 1157 1079 COKER 208 1256 42 90 1252 1119 DELTAPINE 61 1247 42 86 1146 1003 COKER 315 1238 43 87 1200 1129 CDKER 81-102 1227 43 87 1163 STONEVILLE 506 1218 41 91 1068 998 MCNAIR 220 1217 41 90 1100 l0bO STONEVILLE 112 1206 42 92 1020 COKER 304 1196 42 90 1161 1050 COKER 81-139 1191 42 88 %so DELTAPINE 20 1187 41 91 1034 971 DES 422 1180 42 90 1030 1016 MCNAIR 235 1180 42 90 1034 1032 MCNAIR 308 1170 40 91 - - COKER 3131 1104 43 91 1063 925 DELCOT 311 1046 40 91 1031 969 TEST MEAN 1237 L.S.D. (.05) 150 --------Wan&2Lo....mow owago-m fo A ------------Qm-mm---am---------------OO---w--w~ " "t mm"Ot m W afmqm TABLE 8. PERFORMANCE OF COTTON VARIETIES A HEADLAND, ALABAMA, 1985 dm mme. m om m12a5 .i.. .. 2-YR* AV* - R ,,,,U ARREIL,,,, _ LLMIII I LAGR..L~LMI ERIEL LMLER LIA L Ba EUl &s ~ ~ DELTAPINE 90 1601 42 - 1436 1182 DELTAPINE 41 1461 46 - 1433 1195 MCNAIR 235 1363 42 1304 1053 DES 422 1350 42 - 1392 1140 DELTAPINE 61 1298 +2 - 1240 1 COKER 315 1271 43 - 1331 1121 MCNAIR 308 1263 40 .f C3KER 3131 1257 40 - 1348 1130 STONEVILLE 825 1250 43 1319 1089 KNX 2019 1237 41 -I DELTAPINE 50 1225 38 1269 1071 DELTAPINE 20 1221 43 - 1297 1055 DELCOT 311 1202 41 - 1197 1044 COKER 304 1194 42de 1187 1030 STONEVILLE 213 1193 43 - 1273 1106 MCNAIR 220 1171 41 - 1202 1008 COKER 81-102 1170 42 - 1257 STONEVILLE 506 1168 42 - 1217 1014 C)KER 208 1164 40 - 1250 1065 PD-1 1153 43 - - STONEVILLE 112 1140 41 - 1222 COKER 310 1126 43 - 1182 1017 COKER 81-139 1099 40 ago TEST MEAN 1236 L.S.D. (.05) 248 C . ." " ".m ------ mfw m b W -qwwo4s* ..........................~am...m....a..p....mw m aw d~mmo 4 a " 4 lm 4 "a ow4 TABLE 9. PERFORMANCE OF COtTON VARIETIES IN ALABAMA AVERAGE OF ALL LOCATIONS 1E x LI I Amob E_ _. . .... m I.%W400 4M.400.W tEAR~LINE-.0 RAR -- LELLr~b -L28IL 12alr 1=&&r L281: 1285.I rr12 5:BL..198 :83__12AL..1282:BA . LUs L& E LBaLla EIU.L EUl DELTAPINE 90 1126 1168 1040 40 41 41 85 8 DELTAPINE 50 1088 1127 1005 38 38 39 87 84 COKER 315 1091 1125 986 2 42 42 85 82 DES 422 1038 1091 982 41 41 41 89 84 CUKER 208 1028 1107 976 40 40 40 88 83 STONEVILLE 213 1012 1092 975 40 41 41 87 81 CDKER 3131 1089 1115 972 41 41 42 87 83 STONEVILLE 825 1032 1085 967 41 41 41 89 85 DELTAPINE 41 1091 1088 966 43 43 43 89 84 MCNAIR 220 1037 1081 964 40 40 40 90 87 COKER 310 1029 1075 960 41 41 41 87 83 DELTAPINE 20 1052 1076 957 41 41 40 89 85 MCNAIR 235 1036 1045 952 40 40 40 88 84 DELTAPINE 61 1056 1084 947 41 40 40 85 81 STONEVILLE 506 1020 1066 942 40 40 39 89 85 C3KER 304 971 1057 929 41 41 40 88 84 S DELCO! 311 980 1017 911 39 40 39 89 84 COKER 81-102 1000 1096 41 42 85 81 STO4EVILL 112 1010 1045 40 40 88 83 PD-2 944 - - 39 - - 89 C)KER 81-139 1052 - - 40- - 87 - KNX 2019 1103 40 85 MCNAIR 308 950 - 39 88 THESE VARIETIES AT 2 LOCATIONS ONLY. Po-1 1032 1043 829 42 41 41 87 81 GAT 72-56 1215 1179 41 41 - 88 84 PAYMASTER 145 868 901 38 39 - 80 81 ACALA SJC-1 788 817 - 39 40 17 73 82 86 84 86 85 83 85 86 85 88 85 87 86 83 87 85 86 83 8. 86 63 87 o- Tabl 10.Percentage of Plants Showing Symptoms of Fusarium Wilt, Tallassee, Alabama 1 Average wilt percentage_ Variety 1lyr. 2 yr, 3yr, 4 yr,15 yr, 6 yr, 7 yr, 8yr. y. ly. 1 1985 1984-85 1983-85 1982785 181-85 1980-85 1979857-85 197 7:5 97-8 17 Stoneville 213 Coker 310 Coker 304 Deltapine 61 McNair 220 Coker 315 Deltapine 41 McNair 235 Stoneville 825 Coker 3131 Delcot 311 Stoneville 506 Coker 208 Deltapine 90 Deltapine 50 DES 422 Deltapine 20 Coker 81-102 Stoneville 112 Coker 81-139 Gumbo KNX 2019 McNair 308 PD-i PD-2 Pct. 40.0 10. 17.6 45. 13.0 23.9 5.8 8.8 85.6 22.5 3.2 8.4 42.0 0.5 6.8 5.0 2. e2 * 1 11.7 7.8 6.4 4.7 10.8 27.*1 34.6 27.9 Pct.a 26.7 11.5 21.9 25.8 7.*5 14.7 17.5 8.0 62.3 18.8 4.0 6.5 25.0 4.2 10,3 7,3 3.2 13.8 7.8 Pct. 25.5 16.8 19.9 21.9 11.01 18.9 14. 7 8.3 51.7 18.6 6.3 8.7 24.9 59 12.0 9.9 14.2 Pct. 25.5 17.1 2299 22.0 14.3 18.8 15.7 10.8 48.1 19.2 7.0 9.4 24.4 7.2 12.2 Pct.0 22.7 14.1 18.6 19.0 10.8 15.9 14.5 9.4 41.4 17.7 5.8 8.5 19.0 7o7 ict 30.3 17.6 21.9 20.8 15.1 20.7 20.8 12.4 48.3 20.8 12.7 Pct.* 35.3 20.0 21.9 21.7 15.0 21.4 21.6 12.7 48.7 Pct. 30.0 19.0 20.5 19.7 14.0 19.7 19.7 12.0 ~rct. 34.2 1900 20.2 19.2 14.2 20.4 rct 0 32.4 18.9 1900 13.*4 1Data were taken from a field severely infested with the fusarium wilt fungus and ro-ntnmtds yr. -85 rCE 0 37.7 21.6 21.6 Tabl e 10 0 Table 11. Fiber Properties of Cotton Varieties at Crossville, Alabama, 1985 Variety Micronaire Fibrograph Stelometer 50% 2.5% TI El Reading I. In. te Pt. Coker 310 3.0 0.55 1.21 18.95 8.5 Coker 304 3.2 .55 1.18 18.60 7.8 Coker 3131 3.8 .55 1.16 18.90 10.0 Coker 315 3.1 .55 1.23 19.75 8.3 Coker 208 3.8 .55 1.15 18.30 8.0 Deltapine 61 3.8 .60 1.23 17.75 9.8 Deltapine 41 3.2 .57 1.20 19.80 8.3 McNair 235 3.5 .55 1.15 19.25 8.3 McNair 220 3.5 .58 1.18 19.15 7.5 Stoneville 213 3.7 .54 1.14 18.20 8.5 Stoneville 825 4.1 .55 1.14 17.55 7.8 Stoneville 506 2.9 .57 1.19 19.40 9.0 Stoneville 112 3.6 .56 1.16 18.40 8.8 Delcot 311 3.7 .57 1.15 20.05 10.5 PD-I 3.4 .59 1.23 20.80 7.8 DES 422 3.1 .56 1.18 19.35 8.8 PD-2 3.3 .55 1.17 19.45 8.3 Deltapine 50 3.5 .58 1.19 16.95 11.0 Deltapine 90 3.4 .56 1.19 21.10 9.0 Deltapine 20 2.8 .53 1.13 17.85 11.5 Coker 81-102 3.1 .56 1.19 19.35 7.5 Coker 81-139 3.6 .58 1.22 18.50 8.0 KNX 2019 4.3 .55 1.21 17.80 8.5 McNair 308 3.3 .55 1.19 18.95 8.8 Tabl 12.Fiber Properties of CottonVarieties at Prattville, Alabama, 1985 Variety Micronaire Fibrograph Stelomneter 50% 2,v5%ToTI El Reading In. In. g/tex Coker 310 4.6 0.56 1.19 19.85 Coker 304 4.2 .56 1.19 19.25 Coker 3131 4.0 .56 1.18 18.30 Coker 315 4.2 .56 1.21 18.50 Coker 208 4.7. .54 1.13 18.75 Deltapine 61 4.8 .59 1.20 19.40 Deltapine 41 4.3 .55 1.15 19.20 McNair 235 4.6 o54 1.15 19.15 McNair 220 4.6 .56 1.16 19.0 6 Stoneville 213 4.8 .55 1.13 17.75 Stoneville .825 5.v2 .54 1.13 18.45 6. Stoneville 506 4.5 .54 1.14 17.80 7. Stoneville 112 4.4 e55 1.16 18.95 80 Delcot 311 4.1 .58 1.14 20.70 8. PD-i 4.1 e57 1.19 2100 6. DES 422 4.4 .55 1.16 18.70 7. PD-? 4.1 o55 1.15 18.50 7. Deltapine 50 4.7 *55 1.17 17. 50 8. Deltapine.90 5.0 954 1.12 20.05 7. Deltapine 20 4.6 .54 1. 12 16.80 93 Coker 81-102 4.4 .57 1.21 20.05 7. Coker 81-139 4.7 .55 1.19 18.95 6. KNX 2019 5.1 e54 1.16 17.75 6. McNair 308 3s9 .57 1.20 18.55 7. W ~ LILt Table .12. . ff a P% a r rr w Fiber Properties of Cotton Varieties at Brewton, Alabama, 1985 Variety Micronaire Fibrograph Stelometer 50% 2.5% T1 El Reading In. In. g x Pct. Coker 310 3.9 0.58 1.19 19.24 7.0 Coker 304 4.3 .58 1.22 19.00 6.8 Coker 3131 3.9 .54 1.14 19.19 8.3 Coker 315 3.8 .57 1.22 19.34 7.3 Coker 208 4.4 .56 1.12 19.39 6.8 Deltapine 61 4.3 .56 1.17 19.82 7.0 Deltapine 41 4.2 .56 1.13 20.49 7.0 McNair 235 4.0 .55 1.14 20.83 6.5 McNair 220 4.0 .55 1.14 19.34 6.5 Stoneville 213 3.8 .54 1.12 19.82 7.3 Stoneville 825 4.0 .56 1.15 18.28 7.0 Stoneville 506 3.7 .54 1.14 19.48 7.0 Stoneville 112 3.6 .55 1.12 19.29 8.0 Delcot 311 3.7 .58 1.11 20.30 9.8 PD-1 4.3 .57 1.17 22.37 5.8 DES 422 3.6 .57 1.13 19.82 7.5 PD-2 3.7 .57 1.17 21.26 6.8 Deltapine 50 4.1 .56 1.17 19.15 8.5 Deltapine 90 4.2 .56 1.15 21.46 6.5 Deltapine 20 4.2 .55 1.15 18.38 8.5 Coker 81-102 3.9 .59 1.22 20.40 6.0 Coker 81-139 4.2 .56 1.17 19.63 6.8 KNX 2019 4.5 .58 1.19 19.00 7.0 McNair 308 3.8 .56 1.19 20.16 6.8 Table 13. Table 14. Sources of Seed for the 1985 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 310 Coker 304 Coker 315 Coker's Pedigreed Seed Co. Coker 3131 Hartsville, South Carolina Coker 208 Coker 81-102 Coker 81-139 Delcot 311 Delta Center Portageville, Missouri KNX 2019 McNair 235 Northrup King Co. McNair 220 Leland, Mississippi McNair 308 DES 422 Delta Branch Experiment Station Stoneville, Mississippi PD-I Pee Dee Experiment Station PD-2 Florence, South Carolina -18- RECOMMENDED COTTON VARIETIES FOR ALABAMA The list of recommended varieties given below was prepared by a committee composed of the authors of this report and Dr. Louie J. Chapman, Head of Extension Agronomy, Alabama Cooperative Extension Service, 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 315 DES 422 Coker 208 , Stoneville 213 Coker 3131 , Stoneville 825 Deltapine 41 McNair 220 Coker 310 Deltapine 20 McNair 235 Deltapine 61 Stoneville 506 Coker 304 Delcot 311 * Not suited for soils where fusarium wilt has been a problem. -19-