Research Article

Improving Lowland Rice (O. sativa L. cv. MR219) Plant Growth Variables, Nutrients Uptake, and Nutrients Recovery Using Crude Humic Substances

Figure 5

Treatments (C1: soil alone, C2: soil + complete fertilization, CHS1: soil + complete fertilization + 20 g rice straw compost + 2 g sawdust ash, CHS2: soil + complete fertilization + 40 g rice straw compost + 4 g sawdust ash, and CHS3: soil + complete fertilization + 60 g rice straw compost + 6 g sawdust ash) effect on N, P, K, crude silica, Ca, Mg, Na, Cu, Zn, Mn, and Fe uptake of rice plant at 90 days after seeding. Different alphabets indicate significant difference between means using Tukey’s test at . The error bars are the ± standard error of quadruplicates.