Systems Agronomic and Economic Evaluation of Cotton Varieties in ...

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Replicated LESA Irrigated RACE Variety Demonstration,Muleshoe, TX - 2012Cooperator: Chris BassCurtis Preston, Monti Vandiver, Mark Kelley, and Chris Ashbrook,CEA-ANR Bailey County, EA-IPM Bailey/Parmer CountiesExtension Agronomist – Cotton, and Extension Assistant – Cotton,Bailey CountyObjective:The objective of this project was to compare agronomic characteristics, yields, ginturnout, fiber quality, and economic returns of transgenic cotton varieties underLESA irrigated production in the Texas High Plains.Materials and Methods:Varieties:Experimental design:Seeding rate:Plot size:Planting date:Weed management:Irrigation:All-Tex Nitro-44 B2RF, Croplan Genetics 3156B2RF, Deltapine1219B2RF, Dyna-Gro 2285B2RF, FiberMax 2011GT, NexGen2051B2RF, PhytoGen 367WRF, and Stoneville 4288B2FRandomized complete block with three (3) replications.3.2 seed/row-ft in 30 inch row spacings. (John Deere 7300 Vacuumplanter)6 rows by variable length (2411-2580 ft long)4-MayThree applications of glyphosate were applied during the growingseason at 32 oz/acre with AMS. Also, 2 oz/acre of Staple wasapplied during the growing season.A total of 17” of irrigation were applied via LESA irrigation during thegrowing season.21
Rainfall:Based on the nearest Texas Tech University- West Texas Mesonetstation at Muleshoe, rainfall amounts were:April: 0.07” August: 0.57”May: 1.61” September: 1.43”June: 2.36” October: 0.29”July: 0.77”Total rainfall: 7.1”Insecticides:Fertilizer management:Plant growth regulators:Acephate was applied at a rate of 4.0 oz/acre. This location is inan active boll weevil eradication zone, but no applications weremade by the Texas Boll Weevil Eradication Program.Applied 100 lbs N/acre preplant.None were applied at this location.Harvest aids: A single harvest aid application of ethephon at 32 oz/acre with 2oz/acre Aim 2EC was sufficient to condition the crop for harvest dueto the early freeze event on 8-October.Harvest:Gin turnout:Fiber analysis:Ginning costand seed values:Seed andTechnology fees:Plots were harvested on 24-October using a commercial JohnDeere 7450 with field cleaner. Harvested material was transferredto a weigh wagon with integral electronic scales to record individualplot weights. Plot weights were subsequently converted to lb/acrebasis.Grab samples were taken by plot and ginned at the Texas A&MAgriLife Research and Extension Center at Lubbock to determinegin turnouts.Lint samples were submitted to the Texas Tech University – Fiberand Biopolymer Research Institute for HVI analysis, and USDACommodity Credit Corporation (CCC) loan values were determinedfor each variety by plot.Ginning cost were based on $3.00 per cwt. of bur cotton and seedvalue/acre was based on $250/ton. Ginning cost did not includecheck-off.Seed and technology costs were calculated using the appropriateseeding rate (3.2 seed/row-ft) for the 30-inch row spacing andentries using the online Plains Cotton Growers Seed CostComparison Worksheet available at:http://www.plainscotton.org/Seed/PCGseed12.xls .22
Page 2 and 3: Systems Agronomic and EconomicEvalu
Page 4 and 5: Scott Russell, EA-IPM, Terry/Yoakum
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Page 14 and 15: not significant at this location. H
Page 16 and 17: Table 1. Inseason plant measurement
Page 18 and 19: Table 3. HVI fiber property results
Page 20 and 21: Entry Lint Seed Bur cotton Lint See
Page 22 and 23: Table 7. Inseason plant measurement
Page 24 and 25: Table 9. Final plant map results fr
Page 26 and 27: Table 11. HVI fiber property result
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Page 40 and 41: Replicated LEPA Irrigated RACE Vari
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Entry Lint Seed Bur cotton Lint See
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Replicated No-Till LESA Irrigated R
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Results and Discussion:Acknowledgme
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Table 2. Final plant map results fr
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Replicated LESA Irrigated RACE Vari
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Results and Discussion:Agronomic da
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Replicated LEPA Supplemental (Limit
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lb/acre for FiberMax 2989GLB2. Lint
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Table 2. HVI fiber property results
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Texas Panhandle Cotton Variety Tria
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Biopolymer Research Institue for HV
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Location 2 - DumasAt the Dumas loca
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cotton yields to determine lint and
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Replicated Dryland LargePlot Demons
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Insecticides:Fertilizer management:
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Replicated Dryland Cotton Variety T
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Results and Discussion:Significant
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Table 2. HVI fiber property results
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125Plains Dryland Systems Variety T
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127Blanco Dryland Systems Variety T
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129Dawson County Dryland RACE Demon
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131Lynn County Irrigated RACE Demon
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Subsurface Drip Irrigation Pre-plan
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Effects of Variable In-Season Irrig
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Table 1. Response of commercially a
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Table 1. cont. †BrandVarietyVerti
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There were six locations planted in
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Table 2. HVI ratings for varieties
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Table 4. HVI ratings for varieties
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Table 6. Effect of variety on HVI r
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Table 7. cont.Variety bRel.ValueRan
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High Plains (TASS 1N and 1S)Planted
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Lubbock Air TemperaturesMay, 2012Te
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Lubbock Air TemperaturesSeptember,
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Precipitation (inches)4.0LTA20123.0
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Are side-by-side plots more valuabl
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Is a one-year test valid, or are se
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