P rates | ZnSO4∙7H2O | pH | Zn (DTPA) | PBray2 | PMehlich1 | PFe-strip Pi |
(kg∙P2O5∙ha−1) | (kg∙ha−1) | (1:1) | (mg∙kg−1) | -----------------(mg∙kg−1)-------------- | ||
0 | 4.72 | 4.5 | 0.52 | 3.12 | 2.86 | 1.33 |
16 | 4.72 | 4.7 | 0.63 | 5.44 | 3.85 | 1.89 |
32 | 4.72 | 4.6 | 0.36 | 12.88 | 8.24 | 5.55 |
64 | 4.72 | 4.6 | 0.20 | 25.32 | 21.05 | 16.24 |
128 | 4.72 | 4.7 | 0.64 | 32.25 | 28.20 | 22.45 |
0 | 0 | 4.6 | 0.23 | 3.34 | 3.19 | 1.45 |
16 | 0 | 4.9 | 0.21 | 5.94 | 3.96 | 2.04 |
32 | 0 | 4.4 | 0.23 | 13.45 | 4.81 | 5.34 |
64 | 0 | 4.8 | 0.38 | 29.23 | 15.24 | 13.55 |
128 | 0 | 4.8 | 0.17 | 37.52 | 32.00 | 22.86 |