Photosynthesis and Leaf Water Potential of Cotton Under Trickle and Level Basin Irrigation

Abstract

Deltapine 90 was grown under daily trickle, and weekly and bimonthly level-basin irrigation treatments. The cotton in each treatment received equal amounts of irrigation water over the course of the growing season. The daily irrigated plants maintained more constant leaf water potential (WP) and net photosynthesis (Pn) than the level-basin irrigated plants. The level-basin irrigated plants experienced water stress-induced reductions in WP and Pn prior to irrigation.