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

More documents

Recommendations

Info

Texas Panhandle Cotton Variety TrialsJanuary 2013Dr. Mark Kelley, Extension Agronomist – CottonMr. Chris Ashbrook, Extension Assistant - CottonTexas A&M AgriLife Extension ServiceLubbock, TXandMr. R. Colton Smith – Extension AssistantTexas A&M AgriLife Extension ServiceAmarillo, TXIntroductionOver the last several years, cotton producers in the Texas Panhandle region have increasedplanted acreage of cotton from approximately 616 thousand in 2008 to approximately 1.25million in 2011. Although acreage was down in 2012, cotton production is still a very importantpart of the economy in this region. With improved genetics and technologies, as well asrotational crop management systems, cotton yields in the Texas Panhandle topped 1.4 millionbales in 2010.Industry continues to increase the number of herbicide-tolerant, insect-resistant, and "stackedgene" varieties. Liberty Link Ignite herbicide-tolerant varieties (from Bayer CropScience) werefirst marketed in 2004. The first commercial "stacked Bt gene" system (Bollgard II fromMonsanto) was launched in 2004. Varieties containing Monsanto=s Roundup Ready Flex genesystem were commercialized in 2006. Widestrike "stacked Bt gene" technology from DowAgroSciences was available in some PhytoGen varieties in 2005, with additional RoundupReady Flex "stacked" types in the market in 2006. Liberty Link with Bollgard II types were alsocommercialized in 2006. In 2011, Bayer CropScience made Glytol and Glytol stacked withLiberty Link available to producers in limited quantities. Furthermore, in 2012, Bayer introducedseveral Glytol/Liberty Link varities stacked with Bollgard II technology. New transgenic varietiescontinue to be marketed in the High Plains by All-Tex, Americot/NexGen, Croplan Genetics,Delta and Pine Land/Monsanto, Dyna-Gro, the Bayer CropScience FiberMax/Stoneville brands,and the Dow AgroSciences PhytoGen brand. More transgenic varieties are expected to bereleased by these companies in the future. Additional cotton biotechnologies are alsoanticipated in the near future. These technologies include Extend from Monsanto/Deltapine andEnlist from Dow AgroSciences/PhytoGen. Extend technology with impart resistance to threeherbicide molecules, dicamba, glyphosate, and glufosinate. Varieties with Enlist technology willbe resistant to a new formulation of the 2,4-D herbicide. The proliferation of transgenic varietiesin the marketplace is expected to continue over the next several years.Current small-plot variety testing programs are inadequate in scale and design to investigate theeconomic impact of new transgenic varieties with value-added traits. The objective of thisproject was to evaluate the profitability of cotton varieties in producers' fields in the TexasPanhandle regions.95
Materials and MethodsFor scientific validity, three replications of each variety were included at each of four locations.Trials were conducted under irrigation in Sherman County (near Sunray), Moore County,(Dumas), Carson County (near White Deer), and Gray County (near Pampa). A randomizedcomplete block design was used at all locations. Weed and insect control measures, if needed,and harvest aid applications were performed commercially or by cooperating producers. Plotswere harvested with commercial harvesters by producers with assistance provided by programpersonnel at all locations. Due to extremely high and extraordinary leaf and color grades fromgrab samples, leaf and color grades were set at 3 and 21, respectively at all locations. Individuallocation information was as follows:Location 1: Sunray, TX – Sherman CountyAt the Sunray location, fifteen varieties were planted to 30” strip-till rows following sorghum on15-May with a seeding rate of approximately 67,000 seed per acre. This location was under aLow Elevation Spray Application (LESA) center pivot irrigation system and a combined total of16” of moisture was applied or received as rainfall. Plot size was 8 rows wide by 600 feet long.Plots were harvested using producer/cooperator equipment and grab samples were taken byplot and ginned at the Texas A&M AgriLife Research and Extension Center at Lubbock.Resulting lint samples were submitted to the Texas Tech University – Fiber and BiopolymerResearch Institute for HVI fiber analysis and CCC loan values were calculated.Varieties planted at Sunray (Strip-Till following sorghum under LESA irrigation system):1. FiberMax 2011GT2. FiberMax 9250GL3. FiberMax 9058F4. FiberMax 9180B2F5. FiberMax 1740B2F6. Deltapine 104B2RF7. Deltapine 1212B2RF8. Deltapine 1219B2RF9. NexGen 1551RF10. NexGen 3348B2RF11. NexGen 2051B2RF12. PhytoGen 367WRF13. All-Tex Edge B2RF14. Dyna-Gro 2285B2RF (tested as DG 10R008B2RF)15. Dyna-Gro CT 12222B2RF (tested as DG 11R110B2RF)Location 2: Dumas, TX – Moore CountyFourteen commercially available varieties were included at the Dumas location. Most varietiesplanted on 18-May contained Roundup Ready Flex, Glytol or Glytol/Liberty Link stackedherbicide technology alone or stacked with Bollgard II or Widestrike insect technologies. Plotswere 600 feet in length and included 6 – 30” rows. The seeding rate at Dumas wasapproximately 60,000 seeds/acre. Harvesting of plots was performed using producer providedequipment. Plot weights were taken using a flat-bed scale trailer with integral digital scalesystems and producer’s tractor and boll-buggy. During harvest, grab samples were taken by plotfor ginning at the Texas A&M AgriLife Research and Extension Center near Lubbock. Lintsamples were collected during ginning and submitted to the Texas Tech University – Fiber and96
Page 2 and 3:
Systems Agronomic and EconomicEvalu
Page 4 and 5:
Scott Russell, EA-IPM, Terry/Yoakum
Page 6 and 7:
Replicated No-Till LESA Irrigated R
Page 8 and 9:
Agronomic and Economic Evaluation o
Page 10:
andomized complete block design was
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
Page 28 and 29:
Replicated LESA Irrigated RACE Vari
Page 30 and 31:
Results and Discussion:Agronomic da
Page 32 and 33:
Page 34 and 35:
Replicated Sub-Surface Drip Irrigat
Page 36 and 37:
Page 38 and 39:
Page 40 and 41:
Replicated LEPA Irrigated RACE Vari
Page 42 and 43:
Page 44 and 45:
Table 2. Final plant map results fr
Page 46 and 47:
Page 48 and 49:
Replicated LESA Irrigated RACE Vari
Page 50 and 51:
Page 52 and 53: Table 2. Final plant map results fr
Page 54 and 55: Entry Lint Seed Bur cotton Lint See
Page 56 and 57: Replicated Sub-Surface Drip Irrigat
Page 58 and 59: Results and Discussion:Agronomic da
Page 64 and 65: Replicated Sub-Surface Drip Irrigat
Page 72 and 73: Replicated LESA Irrigated RACE Vari
Page 80 and 81: Replicated No-Till LESA Irrigated R
Page 82 and 83: Results and Discussion:Acknowledgme
Page 88 and 89: Replicated LESA Irrigated RACE Vari
Page 96 and 97: Replicated LEPA Supplemental (Limit
Page 98 and 99: lb/acre for FiberMax 2989GLB2. Lint
Page 100 and 101: Table 2. HVI fiber property results
Page 104 and 105: Biopolymer Research Institue for HV
Page 106 and 107: Location 2 - DumasAt the Dumas loca
Page 108 and 109: cotton yields to determine lint and
Page 118 and 119: Replicated Dryland LargePlot Demons
Page 120 and 121: Insecticides:Fertilizer management:
Page 126 and 127: Replicated Dryland Cotton Variety T
Page 128 and 129: Results and Discussion:Significant
Page 130 and 131: Table 2. HVI fiber property results
Page 132 and 133: 125Plains Dryland Systems Variety T
Page 134 and 135: 127Blanco Dryland Systems Variety T
Page 136 and 137: 129Dawson County Dryland RACE Demon
Page 138 and 139: 131Lynn County Irrigated RACE Demon
Page 140 and 141: Subsurface Drip Irrigation Pre-plan
Page 142 and 143: Effects of Variable In-Season Irrig
Page 144 and 145: Table 1. Response of commercially a
Page 146 and 147: Table 1. cont. †BrandVarietyVerti
Page 148 and 149: There were six locations planted in
Page 150 and 151: Table 2. HVI ratings for varieties
Page 152 and 153:
Table 4. HVI ratings for varieties
Page 154 and 155:
Table 6. Effect of variety on HVI r
Page 156 and 157:
Table 7. cont.Variety bRel.ValueRan
Page 158 and 159:
High Plains (TASS 1N and 1S)Planted
Page 160 and 161:
Lubbock Air TemperaturesMay, 2012Te
Page 162 and 163:
Lubbock Air TemperaturesSeptember,
Page 164 and 165:
Precipitation (inches)4.0LTA20123.0
Page 166 and 167:
Are side-by-side plots more valuabl
Page 168:
Is a one-year test valid, or are se
show all

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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?