Daniel O. Stephenson and Shawn W. Lancaster. University of Arkansas, Northeast Research and Extension Center, Post Office Box 48, Keiser, AR 72351
Research was conducted at the University of Arkansas Division of Agriculture Northeast Research and Extension Center in Keiser and the Lon Mann Cotton Research Station in Marianna during 2007 investigating the effect of various cotton planting patterns on cotton growth and yield. Cotton planting patterns included, twin-7 ½-inch and twin-15-inch rows, with both sets of twin rows separated by 38-inches, and single-38-inch rows. Additionally, seeding rates of 45,000, 55,000, and 65,000 seeds/acre were investigated for each planting pattern. Cotton mapping and lint yield data indicated little to no differences for planting patterns or seeding rate. Twin-15-inch cotton may be a better fit for clay soil than for silt loam soil. Twin-7 ½-inch cotton is similar to single-38-inch cotton. Research will continue in 2008.