Cotton VARIETY TRIALS, Mississippi MISSISSIPPI S OFFICIAL VARIETY TRIALS. Information Bulletin 507 March 2016 GEORGE M.

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1 Information Bulletin 507 March 206 Mississippi Cotton VARIETY TRIALS, 205 MISSISSIPPI S OFFICIAL VARIETY TRIALS MISSISSIPPI AGRICULTURAL & FORESTRY EXPERIMENT STATION GEORGE M. HOPPER, DIRECTOR MISSISSIPPI STATE UNIVERSITY MARK E. KEENUM, PRESIDENT GREGORY A BOHACH, VICE PRESIDENT

2 NOTICE TO USER This Mississippi Agricultural and Forestry Experiment Station information bulletin is a summary of research conducted under project number 7790 at the Delta Research and Extension Center in Stoneville, Mississippi, and several other locations in the state. It is intended for the use of colleagues, cooperators, and sponsors. The interpretation of data presented herein may change after additional experimentation. Information included herein is not to be construed either as a recommendation for use or as an endorsement of a specific product by Mississippi State University or the Mississippi Agricultural and Forestry Experiment Station. Trade names of commercial products used in this report are included only for clarity and understanding. All available names (trade names, chemical names, experimental product code names or numbers, etc.) of products used in this research project are listed in the tables contained in this report.

3 Mississippi Cotton Variety Trials, 205 MAFES Official Variety Trial Contributors Darrin M. Dodds Associate Extension/Research Professor State Cotton Specialist Cotton Variety Trial Coordinator Department of Plant and Soil Sciences Mississippi State University Normie W. Buehring Research Professor/Superintendent Northeast Mississippi Branch Experiment Station Verona, Mississippi Larry Falconer Extension Professor Delta Research and Extension Center Stoneville, Mississippi Bobby R. Golden Assistant Research Professor Delta Research and Extension Center Stoneville, Mississippi Mark W. Shankle Research Professor North Mississippi Research and Extension Center Pontotoc, Mississippi Ted P. Wallace Associate Professor Department of Plant and Soil Sciences Mississippi State University This document was approved for publication as Information Bulletin 507 of the Mississippi Agricultural and Forestry Experiment Station. It was published by the Office of Agricultural Communications, a unit of the Mississippi State University Division of Agriculture, Forestry, and Veterinary Medicine. Copyright 206 by Mississippi State University. All rights reserved. This publication may be copied and distributed without alteration for nonprofit educational purposes provided that credit is given to the Mississippi Agricultural and Forestry Experiment Station. Find variety trial information online at mafes.msstate.edu/variety-trials.

4 PREFACE The main objective of the Mississippi Cotton Official Variety Trials (OVT) is to provide unbiased information to clientele regarding evaluation of yield and fiber performance of commercial cotton varieties and advanced lines that may become varieties in the future. The ultimate goal is to provide Mississippi producers with adequate information to make well-informed seed selection decisions for cultivation in the major production regions in Mississippi. This Mississippi Agricultural and Forestry Experiment Station information bulletin is a summary of research conducted at numerous on- and off-station locations throughout Mississippi. Interpretation of data presented may change after additional experimentation over years. All information included is not to be construed as a recommendation for use or as an endorsement of a particular product or variety by Mississippi State University or the Experiment Station. Trade names of commercial products used in this report are included only to provide greater clarity to the information presented.

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6 CONTENTS Introduction... Testing Procedures... Interpreting the Data...2 Selecting Varieties/Traits...2 Considerations for Selection...3 Loan Valuation Aid...3 Top-Yielding Varieties...3 Acknowledgements...4 Performance Tables for 205-Tested Varieties Table. Varieties submitted for testing in Table 2. One-year yield performance of all varieties submitted for testing in Table 3. Two-year yield performance of varieties cultivated in the Delta region...7 Table 4. Two-year yield performance of varieties cultivated in the Hill region...7 Table 5. One-year yield performance of varieties cultivated in the Delta region...8 Table 6. One-year yield performance of varieties cultivated in the Hill region...9 Table 7. Yield performance and fiber characteristics Brooksville OVT...0 Table 8. Yield performance and fiber characteristics Clarksdale OVT...0 Table 9. Yield performance and fiber characteristics Senatobia OVT...2 Table 0. Yield performance and fiber characteristics Starkville OVT...3 Table. Yield performance and fiber characteristics Stoneville OVT...4 Table 2. Yield performance and fiber characteristics Tunica OVT...5 Table 3. Yield performance and fiber characteristics Verona OVT...6 Table 4. Yield performance and fiber characteristics Eden OVT...7 Appendix. Agronomically important events for OVTs conducted in

7 Mississippi Cotton Variety Trials, 205 Annually, Mississippi State researchers evaluate cotton varieties at numerous locations within the cottongrowing regions of the state. The purpose of the Mississippi State Official Variety Trials (OVT) is to provide an unbiased comparison of varieties across a range of environments. Trial evaluation of standard, commercially available, and new and upcoming cotton cultivars throughout the state provides producers data to make well-informed variety selection decisions based upon how a particular cotton variety performed close to their bases of operation. The cotton OVT is conducted annually at the Delta Research and Experiment Station in Stoneville, North All varieties submitted for testing were grown utilizing conventional chemical control for insect and weed pests. Each test plot consisted of two rows of cotton 35 to 40 feet in length with a row spacing of 38 or 40 inches. Each trial location was analyzed statistically as a randomized complete block with four blocks or replications. Input management for trials was determined by cooperators at each location based on soil texture, soil test value, and scouting for pest pressures. However, seeding rate and physical seeding was controlled by the cotton variety testing coordinator. A list of agronomically important input management dates is presented in Appendix. Agronomic date information allows the user to take into account management practices at each location when evaluating yield. All fiber parameters (lint percent, individual boll weight), as well as HVI fiber quality assessment, were based upon a handpicked 25-boll sample from each replicated plot at each location. The samples from all locations INTRODUCTION TESTING PROCEDURES Mississippi Research and Extension Center in Verona, Mississippi State University R. R. Foil Plant Science Research Center in Starkville, and Black Belt Branch Experiment Station in Brooksville, as well as at cooperating producer locations in the Delta and Hill cottonproducing regions. At each location, all varieties entered into the trial are treated identically (Conventional) with respect to herbicide and insecticide inputs to strive for unbiased evaluation of genetic potential. Mississippi State personnel attempt to conduct at least eight smallplot trials per year in areas that well represent the majority of the state s cotton-producing acreage. were ginned on the same 0-saw Continental laboratory gin to determine gin turnout. Using the same gin for all samples is important because it prevents bias in fiber quality analysis across locations. The Fiber and Biopolymer Research Institute at Texas Tech University in Lubbock, Texas, conducted high-volume instrumentation analyses for fiber property determinations. Lint yields were calculated using the seed cotton weight mechanically harvested from each plot, and the turnout percentage was determined from handpicked boll samples. Mean lint yields are presented as pounds of lint per acre. The commercial varieties utilized as standard checks for comparison in 205 were Delta and Pine Land 32 B2RF, Phytogen 499 WRF, and Stoneville 4946GLB2. These varieties were included to give the end user an idea of how newer cultivars compare to proven highyielding varieties adapted to the Midsouth growing region. Mississippi Agricultural and Forestry Experiment Station

8 Field variability is inherent in production research with any cropping system. Unlike strip trials, small-plot research allows for replication with a very minimal footprint. The minimal footprint associated with small-plot research generally allows for less variability among replications due to field variability (i.e., soil textural changes, pest variations). Reduced variability lends us a greater understanding of a variety s genetic potential cultivated under uniform conditions. However, strip-trial research may provide more information about how a variety will perform across a range of conditions (e.g., low spot in the field). Data from both small-plot and strip trials should be considered when making final variety selection decisions. Mississippi State separates the greatest performing varieties by use of a Fisher s Protected Least Significant Difference (LSD) at a 5% level of significance. The LSD Cultivar selection is one of the most important, if not the most important, management decision a producer must make during the growing season. Improper variety selection generally cannot be overcome with management. Starting with the greatest genetic potential will generally result in the highest yield if all other factors are equal. Careful consideration should go into selecting varieties that are well adapted to Midsouth growing region and to certain geographical regions within the state due to the rising cost of seed and associated technology fees. Multiple available transgenic traits can make selecting a variety cumbersome. At most locations, the topyielding varieties represent a range of available trait packages. This variety gives the producer multiple options to choose from with respect to herbicide and insecticide traits. Following is a synopsis of the transgenic traits that were represented in this year s trials. Glyphosate tolerance This trait is generally indicated on the seed bag with the designations G, RF, or XF. These varieties can tolerate over-the-top applications of glyphosate. The newer GlyTol and Flex varieties have completely replaced the older Roundup-Ready varieties (R or RR). Glytol and Flex varieties allow for over-thetop applications to be made later into the season. XtendFlex (XF) varieties are also tolerant to Liberty and dicamba. INTERPRETING THE DATA SELECTING A VARIETY/TRAIT associated with the 5% level gives us 95% positive identification of the greatest yielding varieties at each specific location. In each individual trial, the collection of varieties that yield the greatest statistically is represented in bold. These varieties will all have a numerical difference less than the LSD value shown at the bottom of the data variable columns. Varieties listed in bold may have slightly different numerical yields, but they will perform very similarly at a given location. Statistical analysis is not conducted for across-location averages. Each producer should review data tables for the geographically closest location that is representative of his or her operation. Producers should also review yield information across locations to get an idea of a variety s yield stability over a wide range of production environments. Glufosinate tolerance This trait is generally indicated on the seed bag with an LL. These varieties can withstand over-the-top applications of Liberty. XtendFlex (XF) varieties are also tolerant to Liberty and dicamba. It is important to note that producers who use both glyphosate- and glufosinate-tolerant varieties in close proximity must use caution to avoid crop injury from spray drift, improperly cleaned applicators, and or a combination of both. For more information on utilizing herbicide-resistant traits and alternative weed control practices consult MSU Extension Publication 532 Weed Control Guidelines for Mississippi 206, available online at Bollgard 2 Varieties with the designation B2 on the seed bag or in the brand name contain genes that produce proteins toxic to heliothis. However, under high and persistent pressure, supplemental chemical control strategies are necessary to prevent economic damage from caterpillar pests. For more information on utilization of transgenic traits with insecticidal properties, consult MSU Extension Publication 247 Insect Control Guide for Agronomic Crops, available online at WideStrike Phytogen varieties with the designations W or W3 on the bag or in the variety name contain two genes that produce proteins toxic to caterpillar pests. Additionally, W3 varieties contain three genes that 2 Mississippi Cotton Variety Trials, 205

9 produce proteins toxic to caterpillar pests. For more information on utilization of transgenic traits with insecticidal properties, consult MSU Extension Publication 247. Yield variability among calendar years within a variety is certain. Therefore, selection decisions should be made from within the range of top-yielding varieties. Newer varieties with limited available data should be cultivated to minimal acreage until further testing validates performance across multiple years and locations. Generally, there is no one variety that is the silver bullet. Therefore, choosing multiple varieties allows for flexibility in relative maturity, management decisions, and risk aversion. Lint yield should be the primary factor when attempting to select a variety, but do not discount fiber quality as a close second. Do not underestimate the For each trial conducted in 205, data was submitted to the upland cotton loan valuation aid. This tool was developed by Dr. Larry Falconer and is supported by Cotton Incorporated. The tool allows for calculation of There are numerous methods to pick or highlight the top-yielding varieties across locations to develop a short list of promising varieties for future plantings. For soybean and corn, the short list is a powerful aid in selecting varieties due to the sheer number of available varieties. However, for cotton, the list of available varieties that perform well and are adapted to the Midsouth TOP-YIELDING VARIETIES TwinLink Bayer varieties with the designation T on the bag or in the variety name contain two genes that produce proteins toxic to caterpillar pests. For more information on utilization of transgenic traits with insecticidal properties, consult MSU Extension Publication 247. CONSIDERATIONS FOR SELECTION discounts associated with high micronaire, which can be significant. A consideration to look at when selecting a variety is the overall mean of the trial. Comparing an individual variety to the trial mean can lend an indication of how that particular variety stacked up to the trial as a whole. A variety with a mean lint yield greater or much greater than the overall trial mean generally will perform well. Remember, there can be a full 4-day difference in maturity between cotton varieties. However, most current leading varieties, including those submitted to this year s trial, tend to be more mid- to early maturing than varieties of the past. LOAN VALUATION DECISION AID Commodity Credit Corporation cotton loan premium and discount values based on yields and HVI classing information. The program is updated annually. is short on its own. The recent trend in cotton varieties submitted for testing to university OVTs across the Midsouth has declined over the last 0 years with changes in the cotton industry. Therefore, it is important to select a variety that has performed well in the Mississippi OVT or other Midsouth university OVTs. Mississippi Agricultural and Forestry Experiment Station 3

10 The authors would like to express their appreciation first and foremost to the four producers who participated in on-farm variety trials. These locations expand the trials into various areas of the state to better represent environmental, soil textural, and management differences present throughout Mississippi. Thank you to Cliff Heaton (Clarksdale), Phil Nichols and George Cunningham (Eden), and George Perry (Senatobia and Tunica); your hard work and willingness to participate in the variety trials are deeply valued. We at the Mississippi Agricultural and Forestry Experiment Station look forward to working with you and other willing producers in the future. ACKNOWLEDGEMENTS We also thank Chase Samples and Chase King of the agronomy program in the Mississippi State University Department of Plant and Soil Sciences for their assistance with all aspects of the trials. Without their diligent work and assistance, the trials would not be a success. We also recognize Tandon Baker, Michael Davis, Drew Denton, Savana Davis, Lucas Franca, Steven Hall, Bradley Norris, and Michael Plumblee for their assistance with hand-harvesting, ginning, and preparing fiber-quality samples. Their work allows us to provide data in a timely fashion. 4 Mississippi Cotton Variety Trials, 205

11 Table. Varieties submitted for testing by participating industry partners in 205. Industry contact Variety trial entries Americot Inc. NexGen Varieties Tom Brooks NG 3405 B2XF NG 5007 B2XF NG 3406 B2XF Bayer Crop Science Andy White ST 4747GLB2 ST 682GLT ST 4848GLT ST 6448GLB2 ST 4946GLB2 (Std) BX 53GLT ST 4949GLT BX 532GLT ST 5032GLT BX 634GLT ST 55GLT BX 638GLT Crop Production Services/Dyna-Gro Seed Scott Cummings DG 2285 B2RF DG CT5426 B2RF DG 3385 B2XF DG CT5557 B2RF DG CT455 B2RF International Seed Technology Carmen Carvajal BRS-286 BRS-335 BRS-293 Monsanto Dave Albers DP 32 B2RF (Std) DP 558NR B2RF DP 58 B2XF DP 62 B2XF DP 522 B2XF DP 64 B2XF DP 538 B2XF DP 639 B2XF DP 553 B2XF DP 646 B2XF DP 555 B2RF MON 5R53 B2XF PhytoGen Seed Co. Brooks Blanche PHY 222 WRF PHY 487 WRF PHY 32 WRF PHY 495 W3RF PHY 333 WRF PHY 496 W3RF PHY 339 WRF PHY 499 WRF (Std) PHY 427 WRF PHY 552 WRF PHY 444 WRF Seed Source Genetics Ed Jungmann SSG CT 20 SSG UA 222 Winnfield Solutions LLC Robert Cossar CG 3885 B2XF 5 Mississippi Cotton Variety Trials, 205 Std designates a standard entry used for check purposes. Mississippi Agricultural and Forestry Experiment Station 5

12 Table 2. One-year mean yield performance and fiber characteristics for OVT varieties submitted for testing in 205 averaged across all testing locations. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll Loan yield yield weight value lb/a lb/a % in g/tex % % g /lb PHY 444 WRF DP 555 B2RF PHY 333 WRF PHY 32 WRF ST 4949GLT PHY 552 WRF ST 682GLT PHY 496 W3RF DP 522 B2XF DP 646 B2XF DP 538 B2XF PHY 499 WRF NG 3406 B2XF DP 32 B2RF PHY 487 WRF NG 3405 B2XF DG CT 5557 B2RF DP 58 B2XF BX 53GLT DP 558NR B2RF DG 2285 B2RF PHY 495 W3RF MON 639 B2XF PHY 339 WRF BX 638GLT DP 553 B2XF DG CT 5426 B2RF CG 3885 B2XF BX 634GLT ST 4848GLT ST 4747GLB DP 62 B2XF ST 4946GLB NG 5007 B2XF DG 3385 B2XF ST 55GLT SSG UA BX 532GLT PHY 427 WRF DP 64 B2XF PHY 222 WRF ST 6448GLB ST 5032GLT MON 5R53 B2XF DG CT 455 B2RF SSG CT BRS BRS BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. 6 Mississippi Cotton Variety Trials, 205

13 Table 3. Two-year mean lint yield performance of varieties cultivated at three locations in the Delta region during 204 and 205. Variety Clarksdale Stoneville Tunica Average across location and yr. lb/a lb/a lb/a lb/a lb/a lb/a lb/a PHY 552 WRF PHY 32 WRF PHY 496 W3RF PHY 444 WRF BX 53GLT DP 32 B2RF PHY 333 WRF PHY 427 WRF PHY 487 WRF DG 2285 B2RF PHY 499 WRF PHY 495 W3RF ST 4946GLB SSG UA BX 532GLT ST 55GLT ST 682GLT ST 4747GLB ST 5032GLT PHY 339 WRF DG CT455 B2RF ST 6448GLB SSG CT BRS BRS Table is sorted based on average across location and year lint yield means (i.e., from greatest to lowest lint yield). Table 4. Two-year mean lint yield performance of varieties cultivated at four locations in the Hill region during 204 and 205. Variety Brooksville Senatobia Starkville Verona Avg. across location and yr. lb/a lb/a lb/a lb/a lb/a lb/a lb/a lb/a lb/a PHY 444 WRF PHY 499 WRF PHY 339 WRF PHY 333 WRF PHY 32 WRF PHY 496 W3RF ST 682GLT ST 4946GLB PHY 552 WRF BX 53GLT ST 4747GLB PHY 495 W3RF ST 6448GLB SSG UA ST 55GLT DP 32 B2RF PHY 487 WRF DG 2285 B2RF ST 5032GLT PHY 427 WRF BX 532GLT DG CT455 B2RF BRS BRS SSG CT BRS Table is sorted based on average across location and year lint yield means (i.e., from greatest to lowest lint yield). Mississippi Agricultural and Forestry Experiment Station 7

14 Table 5. One-year mean yield performance of varieties cultivated at four locations in the Delta region, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll Loan yield yield weight value lb/a lb/a % in g/tex % % g /lb PHY 32 WRF PHY 552 WRF DP 522 B2XF PHY 496 W3RF DP 32 B2RF PHY 333 WRF PHY 444 WRF DG 2285 B2RF BX 53GLT ST 4949GLT PHY 487 WRF DP 58 B2XF DP 555 B2RF NG 3405 B2XF DG 3385 B2XF ST 4848GLT DP 646 B2XF ST 682GLT NG 3406 B2XF PHY 427 WRF BX 532GLT SSG UA DP 62 B2XF PHY 495 W3RF DP 639 B2XF DP 64 B2XF NG 5007 B2XF DP 558NR B2RF PHY 499 WRF DP 538 B2XF CG 3885 B2XF ST 4747GLB BX 634GLT PHY 222 WRF ST 55GLT DG CT 5426 B2RF PHY 339 WRF BX 638GLT DG CT 5557 B2RF ST 4946GLB ST 5032GLT DP 553 B2XF MON 5R53 B2X ST 6448GLB SSG CT DG CT 455 B2RF BRS BRS BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. 8 Mississippi Cotton Variety Trials, 205

15 Table 6. One-year mean yield performance of varieties cultivated at four locations in the Hill region, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll Loan yield yield weight value lb/a lb/a % in g/tex % % g /lb PHY 444 WRF DP 555 B2RF DP 538 B2XF DP 553 B2XF DG CT 5557 B2RF ST 682GLT PHY 333 WRF ST 4949GLT PHY 499 WRF DP 646 B2XF DP 558NR B2RF PHY 339 WRF BX 638GLT NG 3406 B2XF DG CT 5426 B2RF PHY 552 WRF PHY 496 W3RF ST 4946GLB PHY 32 WRF PHY 495 W3RF DP 639 B2XF BX 634GLT CG 3885 B2XF ST 6448GLB PHY 487 WRF NG 3405 B2XF DP 58 B2XF ST 4747GLB DP 522 B2XF BX 53GLT DP 32 B2RF ST 55GLT NG 5007 B2XF DP 62 B2XF MON 5R53 B2XF DG 3385 B2XF DG 2285 B2RF ST 4848GLT SSG UA BX 532GLT DG CT 455 B2RF ST 5032GLT PHY 222 WRF DP 64 B2XF PHY 427 WRF SSG CT BRS BRS BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. Mississippi Agricultural and Forestry Experiment Station 9

16 Table 7. Mean yield performance and fiber characteristics for cotton varieties cultivated on nonirrigated Brooksville silty clay at the Black Belt Branch Experiment Station in Noxubee County, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g PHY 444 WRF DP 558NR B2RF DG CT 455 B2RF DG CT 5557 B2RF PHY 333 WRF DP 555 B2RF DP 553 B2XF BX 638GLT PHY 495 W3RF CG 3885 B2XF PHY 552 WRF PHY 499 WRF DP 639 B2XF ST 55GLT PHY 487 WRF DP 58 B2XF ST 682GLT DP 646 B2XF PHY 339 WRF DP 538 B2XF ST 6448GLB ST 4946GLB PHY 32 WRF NG 5007 B2XF BX 634GLT NG 3405 B2XF ST 4949GLT ST 4747GLB PHY 496 W3RF BRS SSG CT ST 5032GLT BX 532GLT BX 53GLT SSG UA DP 64 B2XF BRS BRS DP 32 B2RF DG CT 5426 B2RF MON 5R53 B2XF DP 522 B2XF NG 3406 B2XF ST 4848GLT DP 62 B2XF PHY 222 WRF DG 3385 B2XF DG 2285 B2RF PHY 427 WRF Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. 0 Mississippi Cotton Variety Trials, 205

17 Table 8. Mean yield performance and fiber characteristics for cotton varieties cultivated on nonirrigated Dubbs very fine sandy loam on Cliff Heaton Farms in Coahoma County near Clarksdale, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g PHY 552 WRF PHY 444 WRF PHY 32 WRF BX 53GLT SSG UA NG 3405 B2XF ST 682GLT PHY 427 WRF BX 532GLT DP 32 B2RF PHY 499 WRF DP 646 B2XF DP 555 B2RF PHY 333 WRF DP 538 B2XF DP 558NR B2RF CG 3885 B2XF BX 638GLT BX 634GLT DP 553 B2XF PHY 487 WRF ST 4848GLT DP 62 B2XF PHY 496 W3RF DG 2285 B2RF NG 5007 B2XF DP 639 B2XF ST 4949GLT ST 5032GLT ST 4946GLB DG CT 5557 B2RF PHY 495 W3RF ST 4747GLB BRS DP 64 B2XF DG CT 5426 B2RF ST 55GLT NG 3406 B2XF DG 3385 B2XF DP 522 B2XF PHY 339 WRF DP 58 B2XF ST 6448GLB PHY 222 WRF SSG CT BRS BRS MON 5R53 B2XF DG CT 455 B2RF Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. Mississippi Agricultural and Forestry Experiment Station

18 Table 9. Mean yield performance and fiber characteristics for cotton varieties cultivated on a nonirrigated Falaya silt loam on Pace Perry Farms in Tate County near Senatobia, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g PHY 499 WRF DP 555 B2RF MON 5R53 B2XF DP 522 B2XF ST 4946GLB NG 3406 B2XF PHY 444 WRF ST 4949GLT ST 682GLT PHY 333 WRF DP 646 B2XF BX 634GLT PHY 496 W3RF DP 58 B2XF PHY 32 WRF PHY 339 WRF DP 62 B2XF PHY 487 WRF DP 32 B2RF ST 55GLT DG 3385 B2XF PHY 495 W3RF DG CT 5426 B2RF PHY 552 WRF DP 553 B2XF ST 4747GLB BX 638GLT ST 5032GLT ST 6448GLB DP 538 B2XF NG 3405 B2XF ST 4848GLT PHY 427 WRF DG CT 5557 B2RF DG 2285 B2RF PHY 222 WRF BX 53GLT DP 64 B2XF DP 639 B2XF DP 558NR B2RF NG 5007 B2XF CG 3885 B2XF BX 532GLT SSG UA DG CT 455 B2RF SSG CT BRS BRS BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. 2 Mississippi Cotton Variety Trials, 205

19 Table 0. Mean yield performance and fiber characteristics for cotton varieties cultivated on a nonirrigated Marietta fine sandy loam on the MSU main campus in Oktibbeha County near Starkville, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g ST 4949GLT DP 538 B2XF NG 3406 B2XF PHY 496 W3RF PHY 339 WRF DP 553 B2XF ST 6448GLB DG CT 5557 B2RF NG 3405 B2XF DG CT 5426 B2RF NG 5007 B2XF DP 555 B2RF ST 682GLT CG 3885 B2XF PHY 444 WRF DP 646 B2XF DP 558NR B2RF PHY 333 WRF DP 639 B2XF BX 53GLT DG 2285 B2RF BX 638GLT DP 522 B2XF SSG UA PHY 499 WRF ST 4946GLB DP 32 B2RF ST 4747GLB PHY 552 WRF PHY 222 WRF DG 3385 B2XF DP 62 B2XF PHY 32 WRF PHY 495 W3RF BRS BX 634GLT BRS PHY 487 WRF PHY 427 WRF SSG CT ST 4848GLT MON 5R53 B2XF BX 532GLT DG CT 455 B2RF DP 64 B2XF ST 55GLT BRS DP 58 B2XF ST 5032GLT Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. Mississippi Agricultural and Forestry Experiment Station 3

20 Table. Mean yield performance and fiber characteristics for cotton varieties cultivated on an irrigated Commerce very fine sandy loam at the Delta Research and Extension Center near Stoneville, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g ST 4949GLT PHY 552 WRF DP 32 B2RF DP 522 B2XF DP 555 B2RF DP 639 B2XF PHY 496 W3RF PHY 333 WRF PHY 32 WRF ST 4848GLT DP 646 B2XF PHY 495 W3RF DP 558NR B2RF BX 638GLT DP 58 B2XF ST 64 B2XF ST 682GLT BX 634GLT PHY 487 WRF NG 3406 B2XF DG 3385 B2XF PHY 444 WRF PHY 427 WRF ST 4747GLB ST 55GLT DG 2285 B2RF PHY 499 WRF SSG UA BX 532GLT NG 5007 B2XF PHY 222 WRF DP 538 B2XF NG 3405 B2XF MON 5R53 B2XF DP 62 B2XF BX 53GLT DG CT 5557 B2RF PHY 339 WRF DG CT 5426 B2RF CG 3885 B2XF ST 5032GLT DP 553 B2XF DG CT 455 B2RF BRS SSG CT ST 4946GLB ST 6448GLB BRS BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. 4 Mississippi Cotton Variety Trials, 205

21 Table 2. Mean yield performance and fiber characteristics for cotton varieties cultivated on a nonirrigated Sharkey clay on George Perry Farms in Tunica County near Tunica, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g DG 3385 B2XF DP 58 B2XF PHY 487 WRF BX 53GLT PHY 496 W3RF PHY 32 WRF DG 2285 B2RF NG 3405 B2XF DP 62 B2XF PHY 444 WRF DP 522 B2XF NG 3406 B2XF NG 5007 B2XF DP 639 B2XF CG 3885 B2XF SSG CT PHY 339 WRF ST 6448GLB PHY 427 WRF ST 682GLT DP 64 B2XF PHY 552 WRF PHY 222 WRF ST 4946GLB DP 646 B2XF ST 4848GLT DP 558NR B2RF DP 538 B2XF PHY 499 WRF ST 4747GLB BX 634GLT DG CT 5426 B2RF DG CT 455 B2RF PHY 495 W3RF ST 55GLT DP 555 B2RF ST 5032GLT BX 532GLT DP 32 B2RF ST 4949GLT SSG UA BX 638GLT DG CT 5557 B2RF MON 5R53 B2XF BRS DP 553 B2XF PHY 333 WRF BRS BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. Mississippi Agricultural and Forestry Experiment Station 5

22 Table 3. Mean yield performance and fiber characteristics for cotton varieties cultivated on a nonirrigated Leeper silty loam at the North Mississippi Research and Extension Center near Verona, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g PHY 444 WRF DP 555 B2RF ST 682GLT ST 4949GLT DG CT 5557 B2RF BX 532GLT ST 4848GLT DP 538 B2XF DP 553 B2XF PHY 499 WRF PHY 32 WRF ST 4747GLB BX 53GLT DP 639 B2XF DG CT 5426 B2RF DP 62 B2XF BX 634GLT DP 558NR B2RF DP 58 B2XF CG 3885 B2XF PHY 552 WRF SSG UA PHY 333 WRF DP 32 B2RF NG 5007 B2XF BRS PHY 487 WRF BX 638GLT DP 646 B2XF NG 3405 B2XF NG 3406 B2XF MON 5R53 B2XF PHY 427 WRF ST 4946GLB ST 55GLT DP 522 B2XF ST 5032GLT DG 3385 B2XF DG CT 455 B2RF PHY 339 WRF PHY 495 W3RF PHY 496 W3RF DP 64 B2XF ST 6448GLB PHY 222 WRF DG 2285 B2RF SSG CT BRS BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. 6 Mississippi Cotton Variety Trials, 205

23 Table 4. Mean yield performance and fiber characteristics for cotton varieties cultivated on an irrigated Adler/Morganfield silt loam soil at George Cunningham Farms in Yazoo County near Eden, Mississippi, 205. Variety Seed cotton Lint Lint Length Micronaire Strength Uniformity Elongation Ind. boll 00 seed yield yield weight weight lb/a lb/a % in g/tex % % g g DP 522 B2XF DG 2285 B2RF DP 32 B2RF PHY 32 WRF PHY 333 WRF ST 4949GLT DG CT 5426 B2RF SSG UA ST 4848GLT DP 58 B2XF NG 3405 B2XF PHY 222 WRF NG 3406 B2XF PHY 496 W3RF PHY 444 WRF BX 532GLT PHY 495 W3RF DP 64 B2XF DP 538 B2XF ST 5032GLT ST 55GLT DP 555 B2RF BX 53GLT DG CT 5557 B2RF DG 3385 B2XF DP 62 B2XF DP 646 B2XF DP 639 B2XF ST 4747GLB PHY 339 WRF CG 3885 B2XF PHY 499 WRF ST 682GLT NG 5007 B2XF ST 4946GLB PHY 427 WRF DP 553 B2XF BX 634GLT BX 638GLT PHY 487 WRF PHY 552 WRF MON 5R53 B2XF DP 558NR B2RF ST 6448GLB DG CT 455 B2RF BRS BRS SSG CT BRS Overall Mean LSD (0.05) C.V. (%) Lint yields in bold type within a column are not significantly different from the numerically greatest yielding variety. Mississippi Agricultural and Forestry Experiment Station 7

24 Appendix. Dates (month/day) of agronomically important events for all cotton variety trials and locations in Mississippi in 205. Event Location and soil texture Brooksville Clarksdale Senatobia Starkville Stoneville Tunica Verona Yazoo City Brooksville Dubbs Falaya Marietta Commerce Sharkey Leeper Adler/Morganfield SC VFSL SL FSL VFSL Clay SL SL Planting date 5/2 5/6 5/5 6/5 5/5 5/5 5/4 6/8 Irrigation N/A N/A N/A N/A 7/6, 7/20, N/A N/A 8/6 N application 6/2 6/4, 7/8 /28, 5/4, 5/3, 7/3 6/0 /28, 5/0, 6/22 6/0 6/4 Pre herbicide 5/23 5/6 5/5 6/5 5/8 5/5 5/4 6/8 Early post herbicide 6/26 6/28 6/23 7/8 6/8 6/24 6/0, 6/5 Layby herbicide N/A N/A 7/0 N/A 7/6 7/6 6/22, 7/5 Early insecticide 6/0, 6/7 6/4,6/5, 6/26 N/A 6/23 6/2 6/8 6/24 6/22, 6/27 Mid insecticide 7/8, 7/30 7/2, 7/6, 7/3, 7/27 N/A 7/8, 7/5, 7/6, 7/30 6/29, 7/4 7/, 7/7, 7/, 7/6 7/20, 7/22 7/3 Late insecticide N/A 8/6, 8/4, N/A N/A 8/6 8/20 8/3 8/4, 8/24 8/22 PGR 7/3 7/, 8/6 6/26 N/A 7/5, 7/20, 7/6, 7/30 7/27, 8/0 7/3, 8/4 8/6 Harvest aid 9/22, 0/2 9/28, 0/6 9/8, 9/25 N/A 9/7, 9/8 9/23, 9/30 9/7, 9/23 9/28, 0/4 Harvest 0/5 0/3 0/5 /9 0/6 0/20 0/7 /6 FSL = Fine sandy loam, VFSL = Very fine sandy loam, SCL = Silty clay loam, SL = Silt loam, SC= silty clay 8 Mississippi Cotton Variety Trials, 205

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28 Mention of a trademark or proprietary product does not constitute a guarantee or warranty of the product by the Mississippi Agricultural and Forestry Experiment Station and does not imply its approval to the exclusion of other products that also may be suitable. We are an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law. mafes.msstate.edu/variety-trials