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

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Replicated Sub-Surface Drip Irrigated RACE Variety Demonstration,Ralls, TX - 2012Cooperator: David CrumpMark Kelley, Chris Ashbrook, Caitlin Jackson, and Dustin PatmanExtension Agronomist – Cotton, Extension Assistant – Cotton,CEA-ANR Crosby County, and EA-IPM Crosby/Floyd CountiesCrosby CountyObjective:The objective of this project was to compare agronomic characteristics, yields, ginturnout, fiber quality, and economic returns of transgenic cotton varieties underSub-Surface Drip 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 3787B2RF, Deltapine0912B2RF, Deltapine 1044B2RF, Dyna-Gro 2570B2RF, FiberMax2484B2F, FiberMax 2989GLB2, NexGen 1511B2RF, NexGen4010B2RF, PhytoGen 367WRF, PhytoGen 499WRF, andStoneville 5458B2RFRandomized complete block with three (3) replications.3.8 seed/row-ft in 40 inch row spacings. (John Deere 1700 Vacuumplanter)8 rows by ~1626’ length17-MayGeneric glyphosate was applied over-the-top at 40 oz/acre withAMS on 12-June, 15-July, and 3-August.Producer indicated he had a 4 gpm/acre irrigation capacity. Thisprovided for 0.21 acre-inches/day. From 15-May to 15-Septembera total of approximately 25 inches of irrigation were applied.27
Rainfall:Based on the nearest Texas Tech University- West Texas Mesonetstation at Ralls, rainfall amounts were:April: 0.51" August: 1.44"May: 0.77" September: 2.59"June: 4.98" October: 0.01”July: 1.11"Total rainfall: 11.44"Insecticides:Fertilizer management:Plant growth regulators:Harvest aids:Harvest:Gin turnout:Fiber analysis:Ginning costand seed values:Seed andTechnology fees:This location is in an active boll weevil eradication zone, but noapplications were made by the Texas Boll Weevil EradicationProgram.Soil test results prior to planting accounted for 94 lbs N available inthe soil. The producer applied a total of 50 more lbs N for a total of144 lbs N/acre.None were applied at this location.32 oz/acre Gramoxone Inteon with 0.25% v/v non-ionic surfactanton 25-October.Plots were harvested on 5-November using a commercial JohnDeere 7460 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 was 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 (3.8 seed/row-ft) for the 40-inch row spacing andentries using the online Plains Cotton Growers Seed CostComparison Worksheet available at:http://www.plainscotton.org/Seed/PCGseed12.xls .28
Page 2 and 3: Systems Agronomic and EconomicEvalu
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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
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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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Page 82 and 83: Results and Discussion:Acknowledgme
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Table 2. Final plant map results fr
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Entry Lint Seed Bur cotton Lint See
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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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