Table 8.
Evaluation of leachability of elements in the coating—water and neutral ammonium citrate extraction (S1—Uncoated seeds, S5.1—Seed coating containing a solution of 2% alginate with amino acids (37.6 mL/100 g), micronutrients (37.5 mL/100 g), and NPK, S5.2—Seed coating containing a solution of 2% alginate with amino acids (75.1 mL/100 g), micronutrients (75.1 mL/100 g), and NPK, S5.3—Seed coating containing a solution of 2% alginate with amino acids (112 mL/100 g), micronutrients (112 mL/100 g), and NPK, S5.4—Seed coating containing a solution of 2% alginate with amino acids (150 mL/100 g), micronutrients (150 mL/100 g), and NPK).
| Extractor | Materials | P | K | Cu | Mn | Zn |
|---|---|---|---|---|---|---|
| % | ||||||
| Water extraction | S1 | 0.00 | 0.685 | 1.96 | 3.25 | 2.16 |
| S5.1 | 5.82 | 7.51 | 14.1 | 12.4 | 5.33 | |
| S5.2 | 7.54 | 9.48 | 7.10 | 9.64 | 5.26 | |
| S5.3 | 5.50 | 7.07 | 4.48 | 9.01 | 6.89 | |
| S5.4 | 7.75 | 9.24 | 5.46 | 9.48 | 6.71 | |
| Neutral ammonium citrate extraction | S1 | 7.60 | 9.11 | 56.9 | 32.2 | 19.4 |
| S5.1 | 69.8 | 68.4 | 100 | 100 | 100 | |
| S5.2 | 60.5 | 59.6 | 100 | 100 | 92.3 | |
| S5.3 | 67.5 | 65.9 | 100 | 100 | 86.0 | |
| S5.4 | 66.2 | 57.4 | 100 | 82.5 | 67.1 | |