ARKANSAS C TT N VARIETY TESTS F.M. Bourland, N.R. Benson, J.M. Hornbeck, C.D. Capps, Jr.

Transcription

1 ARKANSAS C TT N VARIETY TESTS 1999 F.M. Bourlnd, N.R. Benson, J.M. Hornbeck, C.D. Cpps, Jr. ARKANSAS AGRICULTURAL EXPERIMENT STATION Division of Agriculture University of Arknss My 2000 Reserch Series 473

2 Technicl Editing nd Cover Design by Robin Bodishbugh Agriculturl Experiment Sttion, University of Arknss Division of Agriculture, Fyetteville. Milo J. Shult, Vice President for Agriculture nd Director, Chrles J. Scifres, Associte Vice President for Agriculture. PS PM65. The Arknss Agriculturl Experiment Sttion follows nondiscrimintory policy in progrms nd employment. ISSN: CODEN:AKAMA6

3 ARKANSAS COTTON VARIETY TESTS 1999 F.M. Bourlnd Director of Northest Reserch nd Extension Center Professor of Crop, Soil nd Environmentl Sciences N.R. Benson Reserch Associte Northest Reserch nd Extension Center J.M. Hornbeck Reserch Specilist Cotton Brnch Sttion C.D. Cpps, Jr. Reserch Specilist Southest Brnch Sttion Arknss Agriculturl Experiment Sttion Fyetteville, Arknss 72701

4 SUMMARY The primry im of the Arknss Cotton Vriety Test is to provide unbised dt regrding the gronomic performnce of cotton vrieties in the mjor cotton growing res in Arknss. This informtion helps seed delers estblish mrketing strtegies nd ssists producers in choosing vrieties to plnt. In this wy the nnul test fcilittes the inclusion of new, improved genetic mteril into Arknss cotton production. The 1999 test hd 67 entries (including 25 trnsgenic genotypes nd 35 first-yer entries), which were evluted t six sites in estern Arknss. The presence of four trnsgenic nd five first-yer entries mong the top 10 yielding entries suggests tht improvement is being ccomplished in vrietl development. This report lso includes the Mississippi County Vriety Test (n on-frm evlution of selected vrieties) nd on-frm vriety trils conducted by the Coopertive Extension Service. CONTENTS Introduction...1 Mterils nd Methods...1 Dt Collected...2 Results...2 Acknowledgments...3 Culturl Inputs...4 Keiser (with irrigtion)...4 Clrkedle (with irrigtion)...5 Clrkedle (without irrigtion)...6 Mrinn (with irrigtion)...7 Mrinn (without irrigtion)...8 Rohwer (with irrigtion)...9 Environmentl Conditions...9 Cotton Vriety Test Results...10 Yield nd fiber qulity results (Vrieties tested in previous yer)...10 Yield nd fiber qulity results (Vrieties tested for the first time in 1999) yer nd 3-yer yield verges...24 Mississippi County Vriety Test (On-frm vriety test)...26 Appendix...27 Coopertive Extension Service On-frm Vriety Tril Results...28 Conventionl system vriety trils (On-frm evlutions of conventionl vrieties)...28 Roundup Redy vriety trils (On-frm evlutions of Roundup vrieties treted with Roundup)...36 Bollgrd vriety trils (Hed-to-hed evlution of Bollgrd vrieties)...39

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6 ARKANSAS COTTON VARIETY TESTS 1999 F.M. Bourlnd, N.R. Benson, J.M. Hornbeck, nd C.D. Cpps, Jr. INTRODUCTION The purpose of the University of Arknss Cotton Vriety Test is to provide n unbised comprison of cotton vrieties. Informtion included is intended to fcilitte vriety selection by identifying the potentil dptbility of vrieties to prticulr cotton growing regions of the stte. Recognizing the genetic differences mong entries is the ultimte gol of the test; therefore, ll vrieties re treted the sme wy. No specilized production inputs were implemented with respect to geneticlly enhnced vrieties. Roundup-tolernt vrieties, Buctril-resistnt vrieties, Bcillus thuringiensis (Bt) vrieties, nd conventionl vrieties were ll treted eqully with respect to weed nd insect control. Coopertive efforts between the Arknss Agriculturl Experiment Sttion, the Coopertive Extension Service, nd Arknss cotton growers resulted in systems -type vriety trils. Lrge, onfrm comprisons of geneticlly enhnced vrieties were conducted cross the stte nd provided the flexibility to test vrietl differences under Roundup, Bollgrd, nd conventionl systems for cotton production (see Appendix). MATERIALS AND METHODS The 1999 Arknss Cotton Vriety Test ws conducted t the Northest Reserch nd Extension Center t Keiser; the Delt Brnch Sttion t Clrkedle; the Cotton Brnch Experiment Sttion t Mrinn; nd the Southest Brnch Experiment Sttion t Rohwer. A test with irrigtion ws conducted t ech site, nd test without irrigtion ws conducted t Clrkedle nd Mrinn. One on-frm vriety test ws conducted in Mississippi County, locted in northest Arknss. In generl, culturl prctices followed were those recommended by the University of Arknss Extension Service. Test plots t the Mrinn loction were in close proximity to studies tht required ner insect-free conditions. Thus insecticide pplictions t Mrinn were initited t much lower insect thresholds thn would normlly be recommended under Extension Service recommendtions. Entries were seprted into those tested for the first time (first-yer entries) nd those hving been entered in the Arknss Cotton Vriety Test the preceding yer. All vrieties were plnted in two-row plots rnging in length from 40 to 50 ft. Vrieties

7 AAES Reserch Series 473 entered in the Mississippi County test were plnted in six-row plots running the full length of the field (pproximtely 1270 ft). Tests were rrnged in rndomized complete block nd replicted four times. Although exct inputs vried cross loctions, ll vrieties were treted eqully within testing site (Tble 1 6). All plots were mchine-hrvested, nd yield per cre ws clculted nd sttisticlly nlyzed. Dt Collected Lef Pubescence: Once per seson, visul estimtes of lef pubescence were mde on 10 plnts from ech vriety. Lef pubescence dt were collected from two of the four replictions t ech loction nd included rting individul plnts from 1 to 7 (1 = smooth nd 7 = very hiry). Mturity: Strting t pproximtely first flower, nodes bove white flower (NAWF) vlues were collected from ll plots t ech loction. NAWF vlues were collected pproximtely once per week until ech vriety hd reched cutout (NAWF = 5). Prior to defolition, estimtes of the percentge of open bolls were mde for ech plot. Rtings were collected from ll loctions nd included visul estimtion of the percentge of open bolls on ech plot. Plnt Height: Plnt height mesurements were collected for ech vriety prior to hrvest. Averge plnt heights for vrieties were determined by mesuring from the soil surfce to the top of one verge-sized plnt per plot. Lint Frction nd Fiber Dt: Prior to mechnicl hrvest, hnd-hrvested smple of 50 open bolls (25 from ech of two rows) were obtined from two replictions t ech loction. The 50 boll smples were ginned (lb gin without the use of lint cleners) to determine the lint frction (the proportion of lint to seedcotton). Fiber properties were determined using the HVI clssifiction system. Lint Yield: Seedcotton yield per plot ws converted to seedcotton yield per cre nd then multiplied by lint frction (determined by vriety nd loction) to estimte lint per cre. Yield Comprison: Uncontrolled vrition is inherent to collection of vrietl performnce dt, prticulrly yield dt. In ddition to genetic differences, vrition mong vrieties my be due to slight differences in soil, pest, or climtic conditions within field; vrious interctions with specific mngement; or rndom chnce. Sttistics llow users to define the degree of uncontrolled vrition nd to interpret dt. The sttisticl tool used to compre mens in these tests ws Fisher s Protected Lest Significnt Difference (LSD) Test. An LSD ws clculted when the F-vlue from nlysis of vrince ws significnt. Vrietl yields re considered significntly different if the difference between the men yields of two vrieties is greter thn the LSD vlue. Differences smller thn the LSD my hve occurred becuse of chnce or uncontrolled vrition nd re therefore considered not significntly different. Additionl estimtes of vrition re provided by mesures of R-squred nd coefficient of vrition (CV). R-squred (times 100) indictes the percentge of vrition tht is explined by defined sources of vrition. Confidence in dt increses s the R-squred vlue increses. Generlly, the meningfulness of differences mong mens is questionble when dt hve R-squred vlues of less thn 50%. To lrge extent, confidence in dt becomes greter s CV declines. Since CV is function of the men of prmeter, R-squred is better tool for compring the precision of different experiments. Environmentl Conditions: Environmentl conditions vried cross the stte (Tble 7). Tempertures were bove the 30-yer verge for Arknss, while rinfll ws well below the verge for the sme period. RESULTS Tbles 1 6 Tbles 1 6 represent culturl inputs nd estimted production costs for vriety trils t Keiser, Clrkedle (with nd without irrigtion), Mrinn (with nd without irrigtion), nd Rohwer. 2

8 Arknss Cotton Vriety Tests 1999 Tble 7 Tble 7 reports wether informtion for north, centrl, nd south Arknss during the 1999 growing seson. Tbles 8 14 Tbles 8 14 depict the results of the Arknss Cotton Vriety Test. Vrieties listed in these tbles were tested the previous yer in Arknss. Tbles Tbles show the results of the first-yer Arknss Cotton Vriety Test. Vrieties listed in these tbles hve never been entered in the test. ACKNOWLEDGMENTS We express our pprecition to the Directors, Reserch Specilists, nd stffs t the Northest Reserch nd Extension Center, Delt Brnch Experiment Sttion, Cotton Brnch Sttion, nd the Southest Brnch Sttion. A specil thnks is extended to George Plmer t the Northest Reserch nd Extension Center for his efforts rrnging nd plnting the vriety test plots t Keiser nd Clrkdle. Annul evlution of cotton vrieties is mde possible by the work of the reserch ssistnts nd technicins t these loctions nd by the contributions of seed compnies prticipting in the Arknss Cotton Vriety Test. Tbles Tbles 22 nd 23 show two nd three mens, respectively. Tbles 24 Tble 24 shows results of the Mississippi County On-frm Vriety Test. 3

9 AAES Reserch Series 473 Tble production inputs for cotton vriety test with irrigtion t Keiser. Dte Input* Rte/Trips Cost/** 10/22/98 Chisel 2 $8.72 Disk Hipped /22/99 Hipped /12/99 Do-All Fertilizer ppliction lb /12/99 Do-All /12/99 Plnted Prowl + Cotorn pt /4/99 Hi-cycle Dimethote 6.4 oz /11/99 Fertilizer ppliction Liquid ure (32%) 22 gl /11/99 Cultivted Stple 0.4 oz /22/99 Hi-cycle Vydte 10 oz /6/99 Furrow Irrigte /17/99 Furrow Irrigte /3/99 Chopped /4/99 Furrow Irrigte /4/99 Airplne Krte 3.2 oz /8/99 Furrow Irrigte /16/99 Defolited Def + Prep 1.0 pt oz /25/99 Defolited Def + Dropp 1.0 pt lb /14/99 Hrvest Sum of tretments nd ppliction costs $ * Mention of trdemrks or brnd nmes is intended for the purpose of informtion. The University of Arknss Agriculturl Experiment Sttion does not imply pprovl of products listed to the exclusion of other similr products. ** When possible, per cre costs for products nd ppliction were derived from University of Arknss Extension Service production budgets. 4

10 Arknss Cotton Vriety Tests 1999 Tble production inputs for cotton vriety test with irrigtion t Clrkedle. Dte Input* Rte/Trips Cost/** 3/4/99 Fertilizer ppliction 1 $ lb /4/99 Do-All /4/99 Hipped /10/99 Do-All Trefln + Cotorn 4L pt /10/99 Plnted Di-Syston + Terrclor Sup X + Commnd 1.0 pt qt pt /19/99 Cultivted /25/99 Fertilizer ppliction Liquid ure (32%) 14 gl /25/99 Cultivted /28/99 Hi-cycle Orthene lb /8/99 Cultivted Cotorn 4L + DSMA pt /15/99 Hi-cycle Vydte 6.85 oz /21/99 Fertilizer ppliction Liquid ure (32%) 9 gl /21/99 Cultivted Bldex + MSMA pt /5/99 Airplne Provdo oz /20/99 Furrow Irrigte /23/99 Airplne Cpture 2E 3.8 oz /27/99 Furrow Irrigte /3/99 Hi-cycle Fury oz /5/99 Furrow Irrigte /13/99 Hi-cycle Bythroid oz /19/99 Furrow Irrigte /10/99 Defolited Folex + Prep 1.0 pt + 6 oz /14/99 Defolited Hrvde + Prep 26 oz pt /30/99 Hrvest Sum of tretments nd ppliction costs $ * Mention of trdemrks or brnd nmes is intended for the purpose of informtion. The University of Arknss Agriculturl Experiment Sttion does not imply pprovl of products listed to the exclusion of other similr products. ** When possible, per cre costs for products nd ppliction were derived from University of Arknss Extension Service production budgets. 5

11 AAES Reserch Series 473 Tble production inputs for cotton vriety test without irrigtion t Clrkedle. Dte Input* Rte/Trips Cost/** 3/26/99 Fertilizer ppliction 1 $ lb /26/99 Hipped /10/99 Do-All Trefln + Cotorn 4L pt /10/99 Plnted Di-Syston + Terrclor Sup X + Commnd 1.0 pt qt pt /19/99 Cultivted /25/99 Fertilizer ppliction Liquid ure (32%) 14 gl /25/99 Cultivted /28/99 Hi-cycle Orthene lb /8/99 Cultivted Cotorn 4L + DSMA pt /15/99 Hi-cycle Vydte 6.85 oz /21/99 Fertilizer ppliction Liquid ure (32%) 9 gl /21/99 Cultivted Bldex 4L + MSMA pt /5/99 Airplne Provdo oz /16/99 Hi-cycle Krte 1.6 oz /23/99 Airplne Cpture 2E 3.8 oz /30/99 Hi-cycle Fury oz /13/99 Hi-cycle Bythroid oz /2/99 Defolited Folex + Prep 8.0 oz + 2 pt /16/99 Hrvest Sum of tretments nd ppliction costs $ * Mention of trdemrks or brnd nmes is intended for the purpose of informtion. The University of Arknss Agriculturl Experiment Sttion does not imply pprovl of products listed to the exclusion of other similr products. ** When possible, per cre costs for products nd ppliction were derived from University of Arknss Extension Service production budgets. 6

12 Arknss Cotton Vriety Tests 1999 Tble production inputs for cotton vriety test with irrigtion t Mrinn. Dte Input* Rte/Trips Cost/** 11/16/98 Chisel plow 1 $ /16/98 Disk /16/98 Hipped /12/99 Hipped /21/99 Fertilizer ppliction lb /22/99 Subsoiled /23/99 Roller /17/99 Do-All Trefln + Cotorn 4L pt /17/99 Plnted Temik 15G + Terrclor Sup X lb /24/99 Fertilizer ppliction Liquid ure (32%) 12 gl /7/99 Hi-cycle Stple 0.6 oz /11/99 Hi-cycle Orthene 0.25 lb /16/99 Cultivted Cotorn 4L + MSMA pt /18/99 Fertilizer ppliction Liquid ure (32%) 12 gl /21/99 Hi-cycle Bythroid 2 + Provdo oz /22/99 Cultivted Cprol + MSMA pt /29/99 Hi-cycle Krte Z + Provdo oz /6/99 Cultivted Bldex 4L 0.8 pt /8/99 Furrow Irrigted /16/99 Hi-cycle Bythroid 2 + Orthene 75 + PIX 2.0 oz lb oz /21 & 26/1999 Furrow Irrigted 1 (ech dte) /29/99 Hi-cycle Fusilde DX (Spot Tretment) /30/99 Hi-cycle Bythroid 2 + PIX oz /2/99 Hi-cycle PIX 12 oz /3/99 Furrow Irrigted /5/99 Hi-cycle Bythroid oz /11/99 Furrow Irrigted /13/99 Hi-cycle Bythroid oz /18/99 Furrow Irrigted /20 & 23/1999 Hi-cycle 1 (ech dte) 8.00 Bythroid oz (ech dte) /25/99 Furrow Irrigted /27/99 Hi-cycle Bythroid oz /24/99 Defolited Finish 3.0 pt /5/99 Hrvest Sum of tretments nd ppliction costs $ * Mention of trdemrks or brnd nmes is intended for the purpose of informtion. The University of Arknss Agriculturl Experiment Sttion does not imply pprovl of products listed to the exclusion of other similr products. ** When possible, per cre costs for products nd ppliction were derived from University of Arknss Extension Service production budgets. 7

13 AAES Reserch Series 473 Tble production inputs for cotton vriety test without irrigtion t Mrinn. Dte Input* Rte/Trips Cost/** 11/16/98 Chisel plow 1 $ /16/98 Disk /16/98 Hipped /12/99 Hipped /21/99 Fertilizer ppliction lb /22/99 Subsoiled /23/99 Roller /18/99 Do-All Trefln + Cotorn 4L pt /18/99 Plnted Temik 15G + Terrclor Sup X lb /24/99 Fertilizer ppliction Liquid ure (32%) 12 gl /1/99 Cultivted /7/99 Hi-cycle Stple 0.6 oz /8/99 Cultivted /11/99 Hi-cycle Orthene 0.25 lb /16/99 Cultivted Cotorn 4L + MSMA pt /21/99 Fertilizer ppliction Liquid ure (32%) 12 gl /21/99 Hi-cycle Bythroid 2 + Provdo oz /24/99 Cultivted Cprol 4L + MSMS pt /29/99 Hi-cycle Krte Z + Provdo oz /29/99 Hi-cycle Fusilde DX (spot tretment) /7/99 Cultivted Bldex 4L 0.8 pt /16/99 Hi-cycle Bythroid 2 + Orthene 75 + PIX 2.5 oz lb oz /30/99 Hi-cycle Bythroid oz /5/99 Hi-cycle Bythroid oz /11/99 Hi-cycle Bythroid oz /16/99 Hi-cycle Bythroid oz /20/99 Hi-cycle Bythroid oz /23/99 Hi-cycle Bythroid oz /27/99 Hi-cycle Bythroid oz /16/99 Defolited Finish 3 pt /28/99 Hrvest Sum of tretments nd ppliction costs $ * Mention of trdemrks or brnd nmes is intended for the purpose of informtion. The University of Arknss Agriculturl Experiment Sttion does not imply pprovl of products listed to the exclusion of other similr products. ** When possible, per cre costs for products nd ppliction were derived from University of Arknss Extension Service production budgets. 8

14 Arknss Cotton Vriety Tests 1999 Tble production inputs for cotton vriety test with irrigtion t Rohwer. Dte Input* Rte/Trips Cost/** 2/22/99 Fertilizer ppliction 1 $ lb /22/99 Hipped /12/99 Do-All /12/99 Hipped /4/99 Hipped /10/99 Do-All /10/99 Plnted Terrclor Super X + Disyston 5 pt + 12 oz Powl + Cotorn + Zoril (ll ppi) pt /25/99 Hi-cycle /25/99 Orthene 0.25 lb /7/99 Cultivted Stple + Select oz (19-in. bnd) % ure 87 lb /10/99 Hi-cycle Vydte + Provdo oz /16/99 Fertilizer ppliction % liquid ure 20 gl /21/99 Cultivted Cprol + MSMA pt /1/99 Hi-cycle /1/99 Provdo (ground pplied) 3.75 oz /16/99 Furrow Irrigtion /26/99 Furrow Irrigtion /31/99 Airplne Krte Z 1.83 oz /2/99 Furrow Irrigtion /9/99 Furrow Irrigtion /7/99 Airplne Dropp + Finish 0.1 lb + 1 qt /16/99 Hi-cycle Def + Prep pt /23/99 Hrvest Sum of tretments nd ppliction costs $ * Mention of trdemrks or brnd nmes is intended for the purpose of informtion. The University of Arknss Agriculturl Experiment Sttion does not imply pprovl of products listed to the exclusion of other similr products. ** When possible, per cre costs for products nd ppliction were derived from University of Arknss Extension Service production budgets. Tble 7. Wether summry for the 1999 growing seson in north, centrl nd south Arknss. Keiser Mrinn Rohwer Month y vg. Rin (1999) y vg. Rin (1999) y vg. Rin (1999) DD60 s DD60 s in. DD60 s DD60 s in. DD60 s DD60 s in. My June July August September Totl

15 AAES Reserch Series 473 Tble 8. Results of the 1999 Arknss Cotton Vriety Test cross six loctions. 1 Lint Lint Open Plnt Dys to Lef Fiber properties 5 Vriety/Loction yield r 2 frc. r bolls r ht. r cutout 3 r pub. 4 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Phytogen PSC Pymster PM1218BGRR Sure-Grow Sure-Grow Pymster PM1220RR Sure-Grow AgriPro AP Pymster PM1220BGRR Stoneville Stoneville BXN Deltpine DP Phytogen PSC Phytogen PSC Sure-Grow FiberMx FM Phytogen PSC FiberMx FM Pymster PM1560BG Pymster PM Pymster PM1330BG AgriPro AP Deltpine DP 20B Deltpine DP Deltpine DP 428B Deltpine DP 425RR Deltpine DP 436RR Germins GC Phytogen PSC Terr FiberMx FM Deltpine NuCOTN 33B Deltpine DP 458B/RR LSD Keiser, irrigted Clrkedle, irrigted Clrkedle, not irrigted Mrinn, irrigted Mrinn, not irrigted Rohwer, irrigted LSD ns 1.9 ns ns Men CV (%) R-squredx Prob. (Vriety x loction) < < < Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Cutout = dys from plnting to NAWF 5. 4 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 5 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 10

16 Arknss Cotton Vriety Tests 1999 Tble 9. Results of the 1999 Arknss Cotton Vriety Test with irrigtion on Tunic silty cly soil t Keiser. 1 Lint Lint Open Plnt Dys to Lef Fiber properties 5 Vriety/Loction yield r 2 frc. r bolls r ht. r cutout 3 r pub. 4 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Phytogen PSC Sure-Grow Pymster PM1220RR Sure-Grow Deltpine DP Pymster PM1560BG Sure-Grow Sure-Grow AgriPro AP Pymster PM1220BGRR Pymster PM1218BGRR FiberMx FM Deltpine DP 20B Stoneville Phytogen PSC Pymster PM Deltpine DP Deltpine DP 428B Germins GC Phytogen PSC Stoneville BXN Pymster PM1330BG Phytogen PSC Phytogen PSC FiberMx FM AgriPro AP Deltpine DP 425RR Terr FiberMx FM Deltpine NuCOTN 33B Deltpine DP 436RR Deltpine DP 458B/RR LSD ns Men CV (%) R-squred x Plnted My 12; furrow-irrigted July 6, 17 nd Aug 8; open bolls rted Sept. 14; defoilted Sept. 16; hrvested Oct Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Cutout = dys from plnting to NAWF 5. 4 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 5 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 11

17 AAES Reserch Series 473 Tble 10. Results of the 1999 Arknss Cotton Vriety Test with irrigtion on Dundee silt lom soil t Clrkedle. 1 Lint Lint Open Plnt Dys to Lef Fiber properties 5 Vriety/Loction yield r 2 frc. r bolls r ht. r cutout 3 r pub. 4 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Pymster PM1218BGRR Phytogen PSC Sure-Grow Stoneville BXN Pymster PM1220RR Sure-Grow Sure-Grow FiberMx FM Phytogen PSC Phytogen PSC Pymster PM Sure-Grow Pymster PM1560BG Stoneville FiberMx FM Deltpine DP 428B Phytogen PSC Deltpine DP 20B Pymster PM1330BG Deltpine DP AgriPro AP Deltpine DP 425RR Pymster PM1220BGRR Terr Germins GC Deltpine DP Deltpine DP 436RR AgriPro AP FiberMx FM Deltpine NuCOTN 33B Phytogen PSC Deltpine DP 458B/RR LSD ns Men CV (%) R-squred x Plnted My 10; furrow-irrigted July 20, 27 nd Aug. 5, 19; open bolls rted Sept. 13; defolited Sept. 10, 14; hrvested Sept. 30 nd Oct Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Cutout = dys from plnting to NAWF 5. 4 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 5 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 12

18 Arknss Cotton Vriety Tests 1999 Tble 11. Results of the 1999 Arknss Cotton Vriety Test without irrigtion on Dundee silt lom soil t Clrkedle. 1 Lint Lint Open Plnt Dys to Lef Fiber properties 5 Vriety/Loction yield r 2 frc. r bolls r ht. r cutout 3 r pub. 4 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Phytogen PSC Phytogen PSC Sure-Grow Pymster PM1218BGRR Deltpine DP 436RR AgriPro AP Pymster PM1220RR Sure-Grow Phytogen PSC Pymster PM1560BG Deltpine DP AgriPro AP FiberMx FM Sure-Grow Germins GC Sure-Grow Deltpine DP 425RR Deltpine DP 20B Deltpine DP 428B Pymster PM Pymster PM1330BG Terr Pymster PM1220BGRR Phytogen PSC Deltpine DP FiberMx FM Deltpine NuCOTN 33B Stoneville Stoneville BXN FiberMx FM Deltpine DP 458B/RR Phytogen PSC LSD ns ns ns ns ns ns Men CV (%) R-squred x Plnted My 10; open bolls rted Sept. 1; defolited Sept. 2; hrvested Sept Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Cutout = dys from plnting to NAWF 5. 4 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 5 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 13

19 AAES Reserch Series 473 Tble 12. Results of the 1999 Arknss Cotton Vriety Test with irrigtion on Cllowy silt lom soil t Mrinn. Lint Lint Open Plnt Dys to Lef Fiber properties 5 Vriety/Loction yield r 2 frc. r bolls r ht. r cutout 3 r pub. 4 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Stoneville BXN Stoneville Phytogen PSC Sure-Grow Sure-Grow Pymster PM1218BGRR Sure-Grow AgriPro AP Pymster PM1220RR FiberMx FM FiberMx FM Deltpine DP Phytogen PSC Pymster PM1220BGRR Phytogen PSC Pymster PM1330BG AgriPro AP Phytogen PSC Deltpine DP Sure-Grow Germins GC Deltpine DP 20B Deltpine DP 425RR Pymster PM1560BG Deltpine DP 436RR Deltpine DP 428B Phytogen PSC Pymster PM Terr Deltpine DP 458B/RR Deltpine NuCOTN 33B FiberMx FM LSD Men CV (%) R-squred x Plnted My 17; furrow-irrigted July 8, 21, 26 nd Aug. 3, 11, 18,nd 25; open bolls rted Sept. 17; defolited Sept. 24; hrvested Oct Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Cutout = dys from plnting to NAWF 5. 4 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 5 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 14

20 Arknss Cotton Vriety Tests 1999 Tble 13. Results of the 1999 Arknss Cotton Vriety Test without irrigtion on mixed Cllowy, Loring nd Memphis silt lom soil t Mrinn. Lint Lint Open Plnt Dys to Lef Fiber properties 5 Vriety/Loction yield r 2 frc. r bolls r ht. r cutout 3 r pub. 4 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Phytogen PSC Sure-Grow AgriPro AP Phytogen PSC AgriPro AP Phytogen PSC Pymster PM1220BGRR Sure-Grow Pymster PM Deltpine DP Stoneville BXN Pymster PM1330BG Terr Pymster PM1220RR Sure-Grow Pymster PM1218BGRR Phytogen PSC Sure-Grow Deltpine DP 436RR FiberMx FM FiberMx FM Deltpine DP Stoneville Germins GC Phytogen PSC Deltpine DP 20B Pymster PM1560BG Deltpine DP 428B Deltpine NuCOTN 33B Deltpine DP 425RR FiberMx FM Deltpine DP 458B/RR LSD Men CV (%) R-squred x Plnted My 18; open bolls rted Sept. 15; defolited Sept. 16; hrvested Sept Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Cutout = dys from plnting to NAWF 5. 4 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 5 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 15

21 AAES Reserch Series 473 Tble 14. Results of the 1999 Arknss Cotton Vriety Test with irrigtion on Desh silt lom soil t Rohwer. Lint Lint Open Plnt Dys to Lef Fiber properties 5 Vriety/Loction yield r 2 frc. r bolls r ht. r cutout 3 r pub. 4 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Phytogen PSC Pymster PM1218BGRR Stoneville Pymster PM1220BGRR FiberMx FM Sure-Grow Phytogen PSC Stoneville BXN Pymster PM1220RR Pymster PM Phytogen PSC Sure-Grow AgriPro AP FiberMx FM Phytogen PSC Sure-Grow Sure-Grow Pymster PM1560BG Deltpine DP 425RR FiberMx FM Deltpine DP 20B Deltpine DP Pymster PM1330BG Deltpine DP 428B Terr Deltpine DP AgriPro AP Phytogen PSC Deltpine DP 436RR Deltpine DP 458B/RR Deltpine NuCOTN 33B Germins GC LSD Men CV (%) R-squred x Plnted My 10, furrow-irrigted July 16, 26 nd Aug. 2, 9; open bolls rted Aug. 31; defolited Sept. 7; hrvested Sept Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Cutout = dys from plnting to NAWF 5. 4 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 5 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 16

22 Arknss Cotton Vriety Tests 1999 Tble 15. Results of the st-yer Arknss Cotton Vriety Test cross six loctions. 1 Lint Lint Open Plnt Lef Fiber properties 4 Vriety/Loction yield r 2 frc. r bolls r ht. r pub. 3 r Mic r Len r Unif. r Str r Elo. r lb/ % % in. Sure-Grow FiberMx EXP Stoneville Pymster PM X FiberMx EXP DynGro X2108SS Germins GC HCR Sure-Grow 215BR HCR Germins GC Stoneville 4691B ARK Stoneville Deltpine DP448B Germins GC HCR Deltpine DPX9C Deltpine DPX9C Stoneville HCR HCR Deltpine DP451B/RR Sure-Grow 125BR Sure-Grow Deltpine DPX9C Germins GC HCR Deltpine DP422B/RR Sure-Grow 125RR HCR Sure-Grow 501BR Deltpine DP409B/RR DynGro X2383C Pymster PM 1560BGRR Deltpine DP429RR DynGro X2387C LSD Keiser, irrigted Clrkedle,irrigted Clrkedle, not irrigted Mrinn, irrigted Mrinn, not irrigted Rohwer, irrigted LSD Men CV(%) R-squred x Prob. (Vriety x loction) < < < < Four replictions/loction for lint yield, height nd open bolls: two replictions/loction for ll other vribles. 2 r = rnking. 3 Lef pubescence is men of 10 plnts/plot rted from 1 (smooth lef) to 7 (very hiry). 4 Fiber micronire (Mic), length (Len), length uniformity (Unif), strength (Str), nd elongtion (Elo). 17