EFFECTS OF N-SERVE ON SOYBEANS AND SOIL NITROGEN TRANSFORMATIONS

摘要: Plant dry weight, total N, and Ca was increased at 0.1 1 ppm N-serve. At greater 10 the plants showed visual symptoms of a stunted growth, stem elongation, flowers, pods failed to form or were aborted, young leaves curled, roots club shaped with many branches. These increasingly evident increasing N-serve application rates. The reason attributed an auxin effect. Dry wt N in plant less than control higher applications. There little effect on nitrogenase activity Nodulation tended increase