IRRIGATION ON THE OLD ROTATION.

The article explores the use of irrigation on the Old Rotation cotton experiment. Methods used in the experiment involves crop rotations with, and without winter legumes as a source of nitrogen (N) for cotton, corn, soybean, and wheat on 13 plots of the Auburn University area, irrigated separately using 8-foot risers in each plot or can be done through scheduling irrigation. Considering the capacity of irrigation to apply water on a regular schedule basis, estimation of evapotranspiration and presetting the application of supplemental water are made. Results of the study shows a positive response in only one year of irrigating cotton on the Old Rotation.