Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Figure 1

Changes in dry weight of shoot tissues of soybean cultivated with deep placement of various nitrogen fertilizers. Cont: control without deep placement of nitrogen; U: deep placement of urea; CU: deep placement of coated urea; LN: deep placement of lime nitrogen; DMU: deep placement of coated urea fertilizer with DMPP. The error bar indicates the standard error for total shoot weight. Different alphabet on the column indicates a statistical difference () on each sampling day based on Tukey’s test. and indicate statistical difference (, ) on each sampling day between Cont and nitrogen treatment by Student’s t-test.