Lint Yield, Water Use Efficiency, and Economic Returns of Cotton in the West and South-East Texas Regions

Within season measurements of cotton (Gossypium hirsutum L.) growth and development in response to moisture deficit stress can provide insights into how management practices impact plants health and yield. Objective of this study was to test the lint yield of four cotton cultivars (PHY499, DP1044, PHY375, and FM9170) grown under various irrigation levels for two regions in Texas (Texas Rolling Plains and Southeast Texas). Data were collected for the 2013 and 2014 growing seasons from Chillicothe, TX which is in the Texas Rolling Plains. Data were collected for the 2015 growing season from Collegestation, TX which is in the Southeast Texas. The high irrigation level (90% ET replacement) at Chillicothe had the greatest lint yield of 1670 and 1846 kg ha^-1 in 2013 and 2014, respectively. Across years, FM9170 showed the greatest lint yield increase as the total amount of water increased. In both years, the significant irrigation by cultivar interaction indicated higher lint yield of PHY375/FM9170 vs. PHY499/DP1044 at the high irrigation level.