Plant Water Status of Maize and Succeeding Wheat Grown on Organically Amended Soils

Changes in canopy temperature and xylem water potential of maize and wheat grown at different N levels were evaluated after five, eleven and twelve years of organic manuring. Five years of organic manuring and inorganic N fertilization did not affect canopy temperature of maize. Xylem water potential of maize did not change during the eleventh and twelfth years of study with organic manuring and nitrogen. Organic manuring, however, improved soil profile water content, root growth and leaf growth of maize. Canopy temperature and xylem water potential of succeeding wheat were neither affected by organic manuring nor by inorganic N fertilization rate.