Performance of Two Stripper Cotton Cultivars Planted at Three Ultra-narrow Row Spacings
Aug 3, 2018
Ultra-narrow cotton creates new possibilities for shortening the growing season of cotton thus decreasing costs of production inputs, but the optimum row spacing for ultra-narrow planting is still under investigation. The experiment was conducted at the Texas A&M University Agricultural Research and Extension Centre in Uvalde, Texas, during the 1997 season. The soil at the experimental site is a Uvalde silty clay loam. Transgenic RoundUp-Ready cultivars Paymaster 2200 and Paymaster 2326 were planted to a plant population of about 245,000 plants per ha in 20-, 30-, and 40-cm spaced rows. A linear-move, low-pressure overhead sprinkler system was used for in-season irrigation of the plots. There were significant differences in yield between the two cultivars across row spacing treatments. Seedcotton yield of Paymaster 2200 averaged 3089 kg/ha, while that of Paymaster 2326 averaged 2259 kg/ha. There were no significant differences among row-distance treatments. The interaction cultivar x row spacing was not significant. Our data indicates (1) there is no advantage in planting at row-distances less than 16 inches and (2) the selection of best adapted and high yielding varieties is an important consideration for a successful crop.