Z Fan, M N Lali, H Xiong, Y Luo, Y Wang, Y Wang, M Lu, J Wang, X He, X Shi, Y Zhang
Ammonium nitrogen (NH4 + -N) is essential for fruit tree growth, but the impact of excess NH4 + -N from fertilizer on evergreen citrus trees is unclear. In a climate chamber, 8-month-old citrus plants were exposed to five different hydroponic NH4 + -N concentrations (0, 5, 10, 15 and 20 mm) for 1 month to study effects of NH4 + -N on growth characteristics, N uptake, metabolism, antioxidant enzymes and osmotic regulatory substances. Application of 10 mm NH4 + -N adversely affected root plasma membrane integrity, root physiological functions, and plant biomass...
March 11, 2024: Plant Biology