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

andomized complete block design was used at all three locations. Weed and insect controlmeasures, if needed, and harvest aid applications were performed commercially or bycooperating producers. During the growing season, it was determined that the plots at Farwellwere subjected to light chemical damage (tank contamination or drift) from a sorghum herbicide.However, none of the varieties were significantly affected and harvest was performed. Plotswere harvested with commercial harvesters by producers with assistance provided by programpersonnel at all locations. Individual location information was as follows:Location 1: Farwell, TX – Parmer CountyAt the Farwell location, twelve varieties were planted to 30” straight rows on the flat in aterminated rye cover-crop on 18-May with a seeding rate of approximately 60,000 seed peracre. This location was under a Low Elevation Spray Application (LESA) center pivot irrigationsystem. Plot size was 8 rows by variable length due to center pivot. Plots were harvested on 7-November and grab samples were taken by plot and ginned at the Texas A&M AgriLifeResearch and Extension Center at Lubbock. Resulting lint samples were submitted to the TexasTech University – Fiber and Biopolymer Research Institute for HVI fiber analysis and CCC loanvalues were calculated.Varieties planted at Farwell (LESA irrigation system):1. All-Tex Epic RF2. Americot 1551RF3. FiberMax 2011GT4. FiberMax 9250GL5. All-Tex Edge B2RF6. NexGen 2051B2RF7. FiberMax 1944GLB28. Croplan Genetics 3156B2RF9. Deltapine 1212B2RF10. PhytoGen 367WRF11. Deltapine 1219B2RF12. PhytoGen 499WRFLocation 2: Plains, TX – Yoakum CountyTwenty commercially available varieties were included at the Plains location. Most varietiesplanted on 23-May contained Roundup Ready Flex technology stacked with Bollgard II orWidestrike insect technologies. Plots were variable length due to LESA center pivot irrigationand included 12 – 40” rows. The seeding rate at Plains was approximately 49,000 seeds/acre.Harvesting of plots was performed on 30 and 31-October using producer provided equipment.Plot weights were taken using weigh trailers with integral digital scale systems. During harvest,grab samples were taken by plot for ginning at the Texas A&M AgriLife Research and ExtensionCenter near Lubbock. Lint samples were collected during ginning and submitted to the TexasTech University – Fiber and Biopolymer Research Institue for HVI fiber analysis. After lintquality determination, CCC loan values were calculated for each plot.3