The Affect of Nitrogen Concentrations Applied and Plant Density on Some Physiological, Yield Trait of Waxy Maize HUA518

Abstract

    This experiment was conducted to evaluate the effect of nitrogen rates and plant densities on physiological and yield characteristics of waxy maize cv. HUA518 using two-factorial design. Nitrogen rates and plant densities did not clearly affect plant height, growth durations and ear height, except the case without nitrogen application. The posiste effect of nitrogen rates applied and plant density, however, on leaf area index (LAI) and dry matter accumulation was apparent. These characteristics were closely correlated with yield at milking stage in all nitrogen treatments during both 2013 autumn – winter and 2014 spring seasons. Yield was affected most by density and fertilizer treatments. The nitrogen rate of 190 kg N/ha plus 90 kg P₂O₅ and 70 kg K₂O/ha and the density at 57000 – 61000 plants/ha gave the highest yield (yield 11-11,8 tons of fresh waxy maize/ha).