Table 1.
Chemical composition of nutrients and humic substances of commercial products of Lithothamnion sp. from different extraction sources obtained in the States of Espírito Santo (LT Supra®), Maranhão (Algen®) and (Bahia Primaz®).
| Parameter | Unit | Values analyzed | ||
|---|---|---|---|---|
| Algen® | Primaz® | LT Supra® | ||
| Nitrogen (N) | % | 0.05 | 0.05 | 0.06 |
| Phosphorus (P) | 0.06 | 0.06 | 0.09 | |
| Potassium (K) | 0.03 | 0.04 | 0.06 | |
| Calcium (Ca) | 34.28 | 30.29 | 31.19 | |
| Magnesium (Mg) | 3.21 | 3.62 | 2.06 | |
| Sulfur (S) | 0.22 | 0.28 | 0.29 | |
| Boron (B) | mg kg-1 | 31.17 | 30.24 | 48.06 |
| Copper (Cu) | 0.16 | 0.94 | 0.97 | |
| Iron (Fe) | 717.01 | 4527.96 | 14765.56 | |
| Manganese (Mn) | 11.91 | 49.67 | 481.89 | |
| Zinc (Zn) | 1.19 | 2.88 | 10.50 | |
| Sodium (Na) | 3744.25 | 4899.77 | 8084.48 | |
| Fulvic acid | % | 6.77 | 5.40 | 9.31 |
| Humic acid | 3.16 | 4.91 | 0.93 | |
Source: Ramos et al. (2023).