Table 2. Rice yield and albic paddy soil pH, SOC and levels of N, P, K in soils under different organic manure amendments.
Treatments | Yield | pH | SOC | Total N | NO3 --N | NH4 +-N | Available P | Available K |
---|---|---|---|---|---|---|---|---|
(kg/ha) | (g/kg) | (g/kg) | (mg/kg) | (mg/kg) | (mg/kg) | (mg/kg) | ||
NPK | 6280.0±132.8c | 5.50±0.05a | 8.77±1.23b | 0.76±0.01b | 0.17±0.02a | 13.14±0.13b | 9.24±0.73b | 103.54±2.40b |
NPK+M | 7777.5±157.6a | 5.32±0.02b | 12.19±1.08a | 0.84±0.04ab | 0.14±0.02a | 15.59±1.25ab | 14.67±1.07a | 117.08±1.56b |
NPK+S | 6756.3±65.7b | 5.28±0.02b | 13.63±1.18a | 0.86±0.03ab | 0.15±0.02a | 15.73±1.98ab | 11.31±1.71ab | 142.28±7.02a |
NPK+G | 6293.8±103.1c | 5.12±0.03c | 11.18±0.81ab | 0.89±0.02a | 0.17±0.05a | 19.05±0.64a | 14.36±1.19a | 104.94±1.19b |
Data are means ± standard error, n = 3. Different letters indicate significant differences among fertilizer treatments at p <0.05 (Fish’s LSD test).