Cotton Varieties. for Louisiana. Variety Trials and On-Farm Demonstrations. LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

Transcription

1 2016 Cotton Varieties for Louisiana Variety Trials and On-Farm Demonstrations LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

2 Table of Contents Introduction... 3 Choosing Varieties... 3 Fiber Properties... 3 Using the Data... 3 Selecting Varieties... 4 Transgenic Traits... 4 Seeding Rate and Stand... 5 Table 1. Two-year yield performance on cotton varieties cultivated across seven locations... 6 Table 2. One-year performance of cotton varieties across six locations... 7 Table 3. Yield performance, fiber characteristics, and loan values, Dean Lee Research Station OVT, non-irrigated, Latanier clay... 8 Table 4. Yield performance, fiber characteristics, and loan values, Dean Lee Research Station OVT, non-irrigated, Coushatta silt loam... 9 Table 5. Yield performance, fiber characteristics, and loan values, Northeast Research Station OVT, irrigated, Sharkey clay...10 Table 6. Yield performance, fiber characteristics, and loan values, Northeast Research Station OVT, irrigated, Commerce silt loam (May planting)...11 Table 7. Yield performance, fiber characteristics, and loan values, Northeast Research Station OVT, irrigated, Commerce silt loam (June planting)...12 Table 8. Yield performance, fiber characteristics, and loan values, Macon Ridge Research Station OVT, irrigated, Gigger silt loam (May planting)...13 Table 9. Yield performance, fiber characteristics, and loan values, Macon Ridge Research Station OVT, irrigated, Gigger silt loam (June planting)...14 Table 10. Locations and dates of agronomically important events for the cotton OVT...15 Table 11. Summary of lint yields, core block demonstrations across locations...15 Table 12. Summary of fiber quality, core block demonstrations across locations...15 Tables 13. Yield performance, fiber characteristics, and loan values, Avoyelles Parish, core block demonstration...16 Tables 14. Yield performance, fiber characteristics, and loan values, Caddo Parish, core block demonstration...16 Tables 15. Yield performance, fiber characteristics, and loan values, Catahoula Parish, core block demonstration...16 Tables 16. Yield performance, fiber characteristics, and loan values, Franklin Parish, core block demonstration...17 Tables 17. Yield performance, fiber characteristics, and loan values, Tensas Parish, core block demonstration...18 Tables 18. Yield performance, fiber characteristics, and loan values, Rapides Parish, core block demonstration (Collins location)...18 Tables 19. Yield performance, fiber characteristics, and loan values, Rapides Parish, core block demonstration (Dean Lee location) LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016

3 Introduction Scientists with the LSU AgCenter annually evaluate cotton varieties at four locations that are representative of Louisiana s cotton-producing regions. Those are the LSU AgCenter s Red River Research Station at Bossier City, Dean Lee Research Station at Alexandria, Macon Ridge Research Station at Winnsboro and Northeast Research Station at St. Joseph. Cotton varieties are managed using practices that follow LSU AgCenter recommendations and demonstrate commercial operations as closely as possible. All entries in the trials are replicated four times, and results are compiled for average performance after one or two years of testing. Choosing Varieties Variety selection is one of the most important decisions a cotton producer will make for the entire growing season. The variety and its associated traits set the stage for harvest at the time of planting. All other input decisions affect the performance of the variety selected. Variety selection has become increasingly important since the introduction of transgenic cottons and the accompanying increases in seed costs and associated technology fees. Moreover, variety selection is the one decision a producer makes that is not influenced by environmental factors. Therefore, choosing a high-yielding variety with acceptable fiber quality that is adapted to local growing conditions should be considered carefully because of the tremendous importance the decision plays for the entire season. Choosing a cotton variety can be difficult, and the availability of different transgenic traits often complicates the process. The more informed the decision the better. This publication therefore strives to provide growers as much information as possible concerning cotton variety performance over a range of soil textures and conditions. The information reported concerning measured performance of cotton varieties in Louisiana should be useful as a primary source of information for choosing varieties. Producers should be mindful that these LSU AgCenter official variety trials can never identify the best single variety for soils and conditions. As such, producers should plant multiple varieties that are selected from the top performers in the variety trials closest to their production region. This strategy will help mitigate risks from adverse environmental conditions. There are always differences in performance of individual varieties from one year to the next. In most years, however, those among the top 10 percent of the highest-yielding varieties generally remain there for several seasons. The best variety for a particular farm likely resides among the top yielders in the official variety trials, but no one can be certain which of those top-yielding varieties will be the highest yielder for the upcoming year. This actually is a good thing because it gives producers the option to select from as many as five to 10 varieties with different traits, knowing that one of those may be the best for next year s crop. The majority of a grower s acreage should be devoted to proven varieties. Newer varieties should be evaluated on limited acreage until further testing is completed. Fiber Properties Fiber quality has become a more important consideration in marketing cotton and choosing varieties. Because the domestic textile industry has become very limited, most U.S. cotton is exported to foreign mills that generally demand cotton with the most consistent and highest fiber quality properties. The quality of Louisiana cotton has been a concern in recent years, particularly with regard to high micronaire. While premiums are small, discounts for high micronaire and other factors can be significant. Variety selection plays the largest role in fiber properties and is increasingly important for U.S. cotton to maintain and increase presence in the world market. Fiber parameters in the LSU AgCenter s official variety trials were determined with the same highvolume-instrumentation classing system used by the U.S. Department of Agriculture s classing offices. Physical properties, including staple length (reported as the upper half mean length), fiber strength, uniformity index and micronaire were evaluated and are reported for each variety. Seed cotton samples were ginned with small plot research gins that do not have lint cleaners. This method will produce higher lint percentages than you would normally receive from a commercial gin. A 41-4 color and leaf grade was used on all fiber samples to determine loan values. Using the Data Yield should be the primary factor when selecting a variety, followed by fiber quality and maturity. Topyielding varieties should be considered first. There often is no statistical difference between the top-yielding varieties in a given trial. The least significant difference reported below each table is the smallest difference in yield that can be considered a true difference. The most important factor is not the absolute number reported for a cotton variety s yield or fiber quality. The most important question to consider is How did a variety yield in relation to other varieties in the same trial? Another important number to look for is the average yield from the variety trials. Considering a variety s performance compared to the average for the entire trial will help identify varieties that are above average for a given location. LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

4 Cotton varieties should be chosen by considering their performance across several locations and multiple years of testing. Superior performance in one year often can indicate a good variety, but superior performance over multiple years indicates consistency and reliability. Varieties currently are introduced at a rapid pace and have shorter life spans than in the past, so information about some of the newest varieties often is not available for multiple years. For those new varieties that do not have multiyear performance records, it is best to consider performance averaged across several locations during a variety s first year of testing. Grower experience with a variety is important for several reasons. Cotton varieties have different growth habits and can be locally adapted to a small area. Experience with a variety should be considered, but newer varieties that perform well in the official variety trials also should be considered. Selecting Varieties The LSU AgCenter identifies the top tier of highyielding varieties at each location by the use of a statistical test called the least significant difference. A probability level of 5 percent is used, which means the test correctly identifies variety performance for that location with 95 percent certainty. The group of varieties that is statistically the highest yielding is shown in each table in bold print. To identify promising varieties that are new to the market and have only one year of testing in the LSU AgCenter s official variety trials, a multilocation analysis should be performed. Producers should review the data tables for variety performance at the closest location that is most representative of their individual farms and also review statewide multilocation yield averages for consistency of performance over a range of environments. Transgenic Traits Roundup Ready: Transgenic traits are available for glyphosate tolerance, usually indicated by Roundup Ready Flex (sometimes shown simply as RF or F ). The Flex varieties have been available commercially since 2006 and completely replaced the older Roundup Ready ( R or RR ) varieties. Roundup Ready Flex varieties exhibit increased tolerance, particularly in the fruiting stage, to glyphosate applications. Roundup Ready Flex labeling allows over-the-top applications of glyphosate to Flex varieties into the bloom stage and does not restrict contact with the stem for directed applications. Read and follow the label closely for specific restrictions, and be sure to consult the label for the specific glyphosate formulations permitted for use on Roundup Ready Flex varieties. Weed control is a major factor in producing highyielding, high-quality cotton. Because of the increased flexibility of applying glyphosate over the top to 4 LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016 Roundup Ready Flex varieties, some growers may opt to wait until weeds emerge and gain some size before making applications. This is not recommended, however, particularly for early season weed control. Early weed competition can severely reduce yield. Glyphosate is very effective on a wide range of species, particularly when they are small. Applications should be timed to weed size and not other factors. Even more, reliance on one mode of action for weed control is not recommended and has led to herbicide-resistant weeds. Due to the concerns with glyphosate-resistant weeds, the use of other herbicides in addition to glyphosate is strongly encouraged. Growers should note that glyphosate-resistant Palmer amaranth was identified in Louisiana in 2009, and resistant Johnson grass in Consult the LSU AgCenter s 2016 Louisiana Suggested Chemical Weed Management Guide for more information. Liberty Link: Varieties with the designation LL in their brand names are transgenic varieties tolerant to over-the-top application of Liberty (glufosinate). These varieties can be managed in a Liberty Link weed control program, which is covered in more detail in the LSU AgCenter s 2016 Louisiana Suggested Chemical Weed Management Guide publication. Liberty Link cotton is tolerant to Liberty herbicide but will be injured by applications or drift from glyphosate. On farms or in areas where Liberty Link cotton is grown near Roundup Ready Flex cotton, care should be taken to avoid confusion of the herbicide systems and to reduce the potential for mistaken applications or drift. Glytol Liberty Link: Varieties with the designation GL in their brand names are transgenic varieties tolerant to over-the-top application of both glyphosate and glufosinate. These varieties offer potential to alternate from one class of chemistry to another, particularly where producers are concerned about herbicide-resistant weed populations. In any case, weeds still should be controlled early, when weeds are small and actively growing. Producers are cautioned to avoid late, low-dose applications of these nonselective herbicides when existing weeds are large and well developed. Bollgard 2: Varieties with the designation B2 or BG2 in their brand names are cotton lines that are tolerant to the Louisiana caterpillar pest known as the tobacco budworm. After the successful introduction of Bollgard 2 technology into the market, the U.S. Environmental Protection Agency in 2010 required that all Bollgard-only technology be prohibited from future planting due to its single-gene-site activity. Varieties that include Bollgard 2 technology should not need any supplemental insecticide sprays for control of tobacco budworms. They also are tolerant to the bollworm, soybean looper, fall armyworm and beet

5 armyworm. For those and other caterpillar pests, note that supplemental chemical control strategies will be necessary to provide satisfactory management with high and persistent populations. In addition, the insecticidal traits in Bollgard 2 varieties have no activity against noncaterpillar pests such as thrips, aphids, plant bugs, stink bugs and spider mites. Those pests must be managed with conventional integrated pest management practices. Widestrike: Phytogen varieties with the designation W or W3 in their brand names are cotton lines that are tolerant to the Louisiana caterpillar pests known as tobacco budworms and fall armyworms. These varieties should not need any supplemental insecticidal sprays for control of those pests. The characteristics and insect management recommendations previously mentioned for Bollgard 2 traits remain the same for the Widestrike trait in Phytogen varieties. Root-knot nematode. Since 2015, several companies have been marketing cotton varieties with tolerance to the root-knot nematode. This is not transgenic technology. Planting of these varieties on sandier soils with known root-knot nematode populations is a new option, especially with the loss of Temik. XTendFlex: In 2015, Delta Pine varieties with the designation XF became available and they are transgenic cotton lines that are tolerant to over-the-top applications of dicamba, glyphosate, and glufosinate. This is the only cotton technology with tolerance to three herbicides. These varieties offer the potential of alternating from one class of chemistry to another, particularly where producers are concerned about herbicide-resistant weed populations. Weeds should still be controlled early, when they are small and actively growing. Producers are cautioned to avoid late, low-dose applications of these non-selective herbicides when existing weeds are large and well developed. Twinlink: In 2014, Stoneville varieties with the designation T in their brand names became available which are tolerant to the tobacco budworm. Also, they provide reduced bollworm damage through superior bollworm protection comparable to Bollgard II and significant reduction in damage caused by armyworms when compared to non-bt cotton. Under high and persistent populations of bollworms and armyworms, supplemental chemical control strategies will be necessary for satisfactory management practices. Seeding Rate and Stand Two to three plants per foot of row is the ideal final plant population in 30- to 40-inch rows. To achieve this stand, seeding rates should be slightly higher based on the actual stated germination. Seed sizes vary, and the number of cotton seeds per pound ranges from a low of 3,700 up to a high of 5,800. Therefore, seeding rates have to be based on seed numbers per acre and not pounds of seed per acre. To ensure the best seedling emergence, planting should be scheduled during the most favorable conditions possible based on existing and forecast temperatures and soil moisture levels. Being aware of the cool germination test results is more important than determining what actually is a good or bad cool germination rate, however. For example, a seed lot with 85 percent cool germination is more vigorous than one with a 65 percent cool germination test result. If the 65 percent cool germination lot is planted in warm and otherwise good conditions, however, overall germination is likely to be as high as the 85 percent lot. Under adverse conditions, the 85 percent cool germination lot is likely to germinate at a much higher rate than the 65 percent cool germination lot. A somewhat arbitrary division of the cool germination test results is shown in the following table: Cool Germination % >80 Excellent Good Vigor Acceptable plant under good conditions <50 Poor most seed companies will not sell this seed Most planting date studies indicate the ideal planting window in Louisiana for cotton is between April 15 and May 15. Earlier plantings are possible without causing significant yield loss, but there is the risk of cold damage or reduced ability of the plants to recover from thrip pressure. Two LSU AgCenter planting date studies have demonstrated that planting after June 1 can reduce yield potential significantly. Most cotton seed sold will have at least an 80 percent germination reported on the bag. This is the result of the warm germination test. Field conditions, however, typically are more adverse than laboratory tests. The cool germination test can approximate adverse field conditions and is a measure of seed vigor. Results from the cool germination test are not reported on the bag but can be obtained from the seed company. Growers are encouraged to request this information Remember, a cotton seed is a living organism that is used as a delivery mechanism for genetic traits, transgenic technology and even pesticide seed treatments. Care should be taken to preserve and plant high-quality seed to ensure adequate plant stands. LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

6 Table 1. Two-year yield performance of cotton varieties planted across locations, Variety Alexandria Bossier City St. Joseph Winnsboro 2014 Alexandria St. Joseph Winnsboro Clay Silt loam Clay Silt loam Clay Silt Loam Average Clay Silt loam Clay Silt loam-1 Silt loam-2 Silt loam 2015 Average Average across locations PHY333WRF PHY312WRF PHY495W3RF PHY496W3RF PHY339WRF ST4946GLB PHY552WRF ST4747GLB PHY499WRF PHY444WRF DP1555B2RF PHY487WRF DG2285B2RF PHY427WRF ST6182GLT ST5032GLT ST6448GLB ST5289GLT BX1531GLT BX1532GLT ST5115GLT UA HQ210CT Overall mean LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016

7 Table 2. One-year performance of cotton varieties planted at six locations, St. Joseph Winnsboro Alexandria Average across Clay Silt Loam-1 Silt Loam-2 Silt Loam Silt Loam Clay locations Lint yield (pounds/acre) DP1518B2XF PHY333WRF BX1633GLT PHY339WRF MON14R913B2XF DP1522B2XF ST4946GLB DG2285B2RF PHY312WRF PHY487WRF PHY495W3RF MON15R551B2XF DP1555B2RF MON15R513B2XF PHY444WRF NG3406B2XF NG3405B2XF PHY496W3RF ST5032GLT PHY427WRF PHY552WRF NG5007B2XF ST5289GLT ST6448GLB PHY499WRF PHY222WRF DP1558NRB2RF MON15R515B2XF DG3385B2XF ST4747GLB BX1638GLT BX1531GLT BX1634GLT CT13464B2RF DP1538B2XF ST6182GLT CT15557B2XF BX1532GLT MON14R934B2XF ST5115GLT DP1553B2XF UA CT14515B2RF HQ210CT Overall mean LSD (0.05) 375 ns C.V. (%) Numbers in bold type and shaded within a column are not significanlty different from the numerically greatest value. LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

8 Table 3. Yield performance, fiber characteristics, and loan values of cotton varieties grown on a nonirrigated Latanier clay at the Dean Lee Research Station, Lint Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (lbs./ac. (%) (inches) (%) (g/tex) ( /lb) ST4946GLB PHY552WRF PHY495W3RF DP1553B2XF DP1522B2XF ST6448GLB PHY333WRF PHY487WRF NG3406B2XF DP1555B2RF UA CT15557B2XF DP1538B2XF DG2285B2RF ST5032GLT MON15R513B2XF MON14R913B2XF ST5289GLT ST4747GLB PHY339WRF ST5288B2F PHY444WRF NG3405B2XF DP1518B2XF BX1638GLT BX1633GLT DP1558NRB2RF PHY499WRF PHY496W3RF MON15R515B2XF PHY222WRF PHY312WRF NG5007B2XF PHY427WRF CT13464B2RF DG3385B2XF MON14R934B2XF CT14515B2RF MON15R551B2XF HQ210CT BX1634GLT BX1532GLT BX1531GLT ST6182GLT ST5115GLT Overall Mean LSD(0.05) C.V. (%) Numbers in bold type and shaded within a column are not significantly different from the numberically greatest value. 8 LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016

9 Table 4. Yield performance, fiber characteristics, and loan values of cotton varieties grown on a nonirrigated Coushatta silt loam at the Dean Lee Research Station, Lint Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (lbs./ac. (%) (inches) (%) (g/tex) ( /lb) DP1518B2XF PHY427WRF ST5032GLT MON15R513B2XF PHY333WRF BX1633GLT MON14R913B2XF DP1522B2XF PHY496W3RF ST4946GLB PHY499WRF PHY487WRF PHY339WRF MON15R515B2XF DP1555B2RF MON14R934B2XF NG3405B2XF DP1538B2XF DP1558NRB2RF PHY222WRF ST5289GLT DG3385B2XF PHY495W3RF BX1638GLT CT13464B2RF MON15R551B2XF UA NG5007B2XF DG2285B2RF ST5288B2F PHY552WRF ST4747GLB BX1634GLT PHY444WRF HQ210CT CT14515B2RF PHY312WRF DP1553B2XF ST6448GLB NG3406B2XF BX1532GLT BX1531GLT ST6182GLT CT15557B2XF ST5115GLT Overall Mean LSD(0.05) C.V.(%) Numbers in bold type and shaded within a column are not significantly different from the numerically greatest value. LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

10 Table 5. Yield performance, fiber characteristics, and loan values of cotton varieties grown on a irrigated Sharkey clay at the Northeast Research Station, Lint Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (lbs./ac. (%) (inches) (%) (g/tex) ( /lb) MON15R551B2XF PHY312WRF PHY487WRF DP1518B2XF PHY499WRF PHY552WRF ST6182GLT PHY339WRF NG3405B2XF DG2285B2RF PHY444WRF PHY427WRF NG5007B2XF ST6448GLB PHY495W3RF DP1555B2RF ST4946GLB ST5289GLT NG3406B2XF DP1538B2XF UA BX1633GLT DG3385B2XF DP1522B2XF PHY496W3RF BX1634GLT BX1638GLT HQ210CT BX1531GLT DP1558NRB2RF PHY333WRF ST4747GLB ST5115GLT CT15557B2XF DP1553B2XF CT13464B2RF MON14R913B2XF ST5032GLT MON15R513B2XF PHY222WRF BX1532GLT MON15R515B2XF CT14515B2RF MON14R934B2XF Overall mean LSD(0.05) C.V.(%) Numbers in bold type and shaded witin a column are not significantly different from the numberically greatest value. 10 LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016

11 Table 6. Yield performance, fiber characteristics, and loan values of cotton varieties grown on an irrigated Commerce silt loam (May planting) at the Northeast Research Station, 2015 Lint Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (lbs./ac. (%) (inches) (%) (g/tex) ( /lb) MON15R515B2XF ST5032GLT UA NG3406B2XF MON15R513B2XF BX1532GLT BX1633GLT DP1518B2XF MON14R934B2XF PHY495W3RF PHY487WRF MON14R913B2XF PHY552WRF ST4747GLB PHY333WRF PHY222WRF DP1558NRB2RF PHY427WRF CT14515B2RF DG3385B2XF PHY312WRF PHY499WRF PHY496W3RF ST6448GLB DG2285B2RF PHY444WRF DP1522B2XF ST5115GLT CT13464B2RF CT15557B2XF HQ210CT BX1634GLT BX1638GLT ST5289GLT PHY339WRF DP1555B2RF NG5007B2XF BX1531GLT ST6182GLT MON15R551B2XF NG3405B2XF DP1538B2XF DP1553B2XF ST4946GLB Overall Mean LSD(0.05) NS NS NS NS NS NS C.V.(%) Numbers in bold type and shaded within a column are not significantly different from the numberically greatest value. LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

12 Table 7. Yield performance, fiber characteristics, and loan values of cotton varieties grown on an irrigated Commerce silt loam (June planting) at the Northeast Research Station, Lint Yield Lint Length UniformityStrength MicronaireLoan Value Variety (lbs./ac. (%) (inches) (%) (g/tex) ( /lb) BX1531GLT PHY339WRF DG2285B2RF MON15R551B2XF ST4946GLB DP1518B2XF BX1633GLT BX1532GLT ST5289GLT MON14R913B2XF DP1522B2XF PHY222WRF NG3405B2XF PHY444WRF PHY333WRF CT13464B2RF ST6448GLB ST5115GLT ST6182GLT DP1555B2RF MON15R515B2XF PHY487WRF PHY312WRF NG3406B2XF MON15R513B2XF NG5007B2XF PHY496W3RF BX1638GLT MON14R934B2XF DP1558NRB2RF DP1538B2XF CT15557B2XF BX1634GLT DP1553B2XF PHY495W3RF ST4747GLB ST5032GLT DG3385B2XF PHY552WRF PHY427WRF PHY499WRF CT14515B2RF HQ210CT UA Overall Mean LSD(0.05) NS C.V.(%) Numbers in bold type and shaded within a column are not significantly different from the numerically greatest value. 12 LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016

13 Table 8. Yield performance, fiber characteristics, and loan values of cotton varieties grown on an irrigated Gigger silt loam (May planting) at the Macon Ridge Research Station, Lint Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (lbs./ac. (%) (inches) (%) (g/tex) ( /lb) PHY444WRF MON15R513B2XF DP1555B2RF DP1518B2XF DP1553B2XF DP1558NRB2RF PHY339WRF MON15R551B2XF BX1531GLT PHY427WRF DP1538B2XF PHY312WRF PHY496W3RF DP1522B2XF PHY495W3RF ST4946GLB PHY552WRF PHY499WRF BX1638GLT DG2285B2RF UA BX1633GLT ST5115GLT MON15R515B2XF PHY487WRF MON14R913B2XF MON14R934B2XF BX1532GLT ST5289GLT ST6448GLB PHY222WRF CT13464B2RF CT14515B2RF BX1634GLT HQ210CT ST5032GLT ST6182GLT ST4747GLB Overall Mean LSD(0.05) C.V.(%) Numbers in bold type and shaded within a column are not significantly different from the numerically greatest value. LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

14 Table 9. Yield performance, fiber characteristics, and loan values of cotton varieties grown on an irrigated Gigger silt loam (June planting) at the Macon Ridge Research Station, Lint Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (lbs./ac. (%) (inches) (%) (g/tex) ( /lb) PHY333WRF PHY312WRF MON14R913B2XF DP1555B2RF DP1522B2XF PHY444WRF DP1518B2XF NG5007B2XF PHY495W3RF DG3385B2XF NG3406B2XF ST4946GLB MON15R513B2XF DG2285B2RF PHY496W3RF BX1633GLT PHY339WRF NG3405B2XF MON15R551B2XF BX1634GLT ST5032GLT PHY427WRF PHY222WRF ST4747GLB CT15557B2XF ST5115GLT DP1558NRB2RF PHY552WRF BX1531GLT PHY499WRF ST6182GLT MON15R515B2XF ST6448GLB BX1638GLT CT14515B2RF ST5289GLT PHY487WRF CT13464B2RF BX1532GLT MON14R934B2XF DP1538B2XF DP1553B2XF UA HQ210CT Overall Mean LSD(0.05) C.V.(%) Numbers in bold type and shaded within a column are not significantly different from the numberically greatest value. 14 LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016

15 Table 10. Locations and dates of agronomically important events for cotton variety trials managed at the LSU AgCenter Research Stations, Dean Lee Alexandria Northeast Macon Ridge St. Joseph Winnsboro Event silt loam clay silt loam1 silt loam2 clay silt loam1 silt loam2 Planting date 5/6 5/6 5/6 6/11 5/4 5/6 6/4 Emergence 5/11 5/11 5/12 6/15 5/11 5/12 6/8 Row spacing Seeding rate Irrigation no no yes yes yes yes yes Irrigation 3 times 3 times 4 times 4 times 4 times N, P, K (lbs) Defoliation dates 9/8 9/1 9/15, 9/22 10/6/10/21 9/15, 9/23 9/8 10/5 Harvest date 9/16 9/11 9/30 11/13 10/5 9/22 10/19 Trial Dean Lee-clay Dean Lee-silt loam Northeast-clay Northeast-silt loam-1 Northeast-silt loam-2 Macon Ridge-silt loam-1 Macon Ridge-silt loam-2 GPS Location N, W N, W N, W N, W N, W N, W N, W Table 11. Lint yield performance of cotton core block demonstrations across locations, Variety Avoyelles Caddo Catahoula Franklin Tensas Rapides-1 Rapides-2 Average PHY333WRF PHY312WRF DP1522B2XF ST4946GLB PHY495W3RF PHY444WRF ST5289GLT DP1553B2XF ST6182GLT Table 12. Fiber characteristics of cotton varieties for cotton core block demonstrations across locations (7), Lint Length Uniformity Strength Micronaire Loan Value Variety (%) (inches) (%) (g/tex) ( /lb) PHY333WRF PHY312WRF DP1522B2XF ST4946GLB PHY495W3RF PHY444WRF ST5289GLT DP1553B2XF ST6182GLT LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

16 Table 13. Yield performance, fiber characteristics, and loan values of cotton varieties, Avoyelles Parish, core block demonstration, Location: Avoyelles Grower: Adam Lemoine County Agent: Justin Dufour Seeding Rate: 39,000 Row Width: 38 Soil Type: Coteau silt loam Planting Date: 5/6/15 Harvest Date: 9/24/15 Irrigation: no GPS Location: N, W Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (Lint,lb/A) (%) (inches) (%) (g/tex) ( /lb) PHY 333WRF PHY 444WRF PHY 312WRF DP 1553B2XF DP 1522B2XF PHY 495W3RF ST 6182GLT DP1321B2RF ST 4946GLB ST 5289GLT Table 14. Yield performance, fiber characteristics, and loan values of cotton varieties, Caddo Parish, core block demonstration, Location: Caddo Seeding Rate: 50,000 Planting Date: 5/1/15 Grower: Ryan Kirby Row Width: 30 Harvest Date: 10/12/15 County Agent: John Terrell Soil Type: Moreland silty clay loam Irrigation: furrow GPS Location: N, W Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (Lint,lb/A) (%) (inches) (%) (g/tex) ( /lb) PHY333WRF PHY312WRF DP1522B2XF ST4946GLB ST5289GLT PHY495W3RF PHY444WRF ST6182GLT DP1553B2XF Table 15. Yield performance, fiber characteristics, and loan values of cotton varieties, Catahoula parish, core block demonstration, Location: Catahoula Seeding Rate: 46,000 Planting Date: 5/14/15 Grower: Matt Myers County Agent: Lucas Stamper Row Width: 38 Soil Type: Sharkey clay Harvest Date: 10/2/15 Irrigation: no GPS Location: N, W Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (Lint,lb/A) (%) (inches) (%) (g/tex) ( /lb) ST 4946GLB PHY 444WRF PHY 495W3RF PHY 312WRF PHY 333WRF DP 1522B2XF ST 5289GLT DP 1553B2XF ST 6182GLT LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016

17 Table 16. Yield performance, fiber characteristics, and loan values of cotton varieties, Franklin Parish, core block demonstration, Location: Franklin Seeding Rate: 50,000 Planting Date: 5/7/2015 Grower: Adam Faulk Row Width: 38 Harvest Date: 10/1/2015 County Agent: Carol Pinnell -Alison Soil Type: Necessity silt loam Irrigation: furrow GPS Location: N, W Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (Lint,lb/A) (%) (inches) (%) (g/tx) ( /lb) PHY312WRF 1560 a a 1.16 b 84.4 a 31.0 cde 4.7 bc a PHY333WRF 1544 a a 1.16 b 84.3 a 31.8 b-e 4.7 c a DP1522B2XF 1459 ab bc 1.18 ab 83.4 a 32.9 abc 5.0 b bc ST4946GLB ab bc 1.15 b 84.3 a 33.9 ab 5.4 a c PHY495W3RF 1411 ab a 1.10 c 83.2 a 34.4 a 4.9 bc bc PHY444WRF 1380 b a 1.22 a 84.6 a 31.7 cde 4.2 d a ST5289GLT 1377 b c 1.14 bc 82.1 a 29.9 e 4.7 bc ab DP1553B2XF 1156 c bc 1.17 b 83.2 a 32.0 bcd 4.9 bc ab ST6182GLT 1143 c a 1.16 b 83.3 a 30.1 de 4.9 bc ab LSD(0.05) NS C.V.(%) Overall Mean P>F Means followed by same letter do not significantly differ (P=.05, LSD) LSU AgCenter Pub 2135 Cotton Varieties for Louisiana

18 Table 17. Yield performance, fiber characteristics, and loan values of cotton varieties, Tensas Parish, core block demonstration, Location: Tensas Grower: Chuck Tucker County Agent: Dennis Burns Seeding Rate: 38,500 Row Width: 38 Soil Type: Dundee silt loam Planting Date: 5/8/15 Harvest Date: 10/4/15 Irrigation: pivot GPS Location: N, W Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (Lint,lb/A) (%) (inches) (%) (g/tex) ( /lb) PHY 333WRF DP 1522B2XF PHY 312WRF ST 4946GLB PHY 495W3RF ST 5289GLT ST 6182GLT PHY 444WRF DP 1553B2XF Table 18. Yield performance, fiber characteristics, and loan values of cotton varieties, Rapides Parish, core block demonstration, Location: Rapides-2 Grower: Fred Collins County Agent: Donna Morgan Seeding Rate: 34,500 Row Width: 38 Soil Type: Coushatta silt loam Planting Date: 5/9/15 Harvest Date: 10/9/15 Irrigation: no GPS Location: N, W Yield Lint Length Uniformity Strength Micronaire Loan Value Variety (Lint,lb/A) (%) (inches) (%) (g/tex) ( /lb) PHY444WRF ST4946GLB PHY495W3RF DP1553B2XF PHY333WRF PHY312WRF DP1522B2XF ST6182GLT ST5289GLT LSU AgCenter Pub 2135 Cotton Varieties for Louisiana 2016