What is in this article?:
Several cotton varieties shine in California.
University of California cotton specialist Robert Hutmacher continues to sample cotton varieties in various test locations across California.
Numbers out of 2012 seed variety trials conducted by Hutmacher and others with the University of California showed that the PHY 805RF yielded 98 percent of the baseline PHY-800 Pima crop. Those trials were conducted across five locations and on different row spacing: Buttonwillow (38-inch rows), Riverdale (30-inch rows), West Side Research Station (40-inch rows), Firebaugh (30-inch rows), and Corcoran (40-inch rows). The Corcoran site data was not included in the overall averages.
Average PHY-805RF yield across the four test plots was 4,832 pounds per acre. The highest individual yield came from the West Side Research Station at 6,309 pounds per acre.
The two most popular Acala cotton varieties planted in California in 2013 were Dow AgroSciences PhytoGen 725RF and the Bayer CropScience-FiberMax Acala Daytona RF. Both have glyphosate resistant technologies. Combined, the two varieties accounted for nearly half of California’s Acala acreage in 2013, according to the Agricultural Marketing Service.
UC trials in Acala cotton showed strong performances by PhytoGen’s 725RF and Bayer’s Daytona RF cotton seeds. Hutmacher uses the PHY-72 seed as a benchmark for his Acala trials. Both exceeded the PHY-72 benchmark in terms of yield, and both did their best in university trials on 40-inch rows in the Lemoore area. The PHY-725RF bested the Daytona RF in that plot by about 600 pounds per acre.
“We’ve been using it as a benchmark because it is a very good, stable, long-time yield performer,” Hutmacher said of the PHY-72 variety. “It’s one of those rare varieties – their 725 is pretty similar – that tends to do well across a whole bunch of locations.”
Anecdotal stories suggest four and five-bale production out of the PhytoGen Acala 725RF in several San Joaquin Valley locations, and over three bales in Phytogen’s 805 and its new 811 Pima variety.