Table 4.
Other Organic Materials | ||||
---|---|---|---|---|
Material | Modifier | Research Findings | Release Duration a | References |
Biochar | Bentonite, sepiolite | Good urea sorption capability by biochar and mineral binder to slow down the release. | 30 days | [31,86] |
Rosin Adduct | Maleic anhydride | The effective barrier for urea release due to the covalent bond between maleic anhydride and urea. Works effectively under different soil texture. | 4 days b | [29] |
a Time required to reach 75% release; b Time required to release 45% and reached plateau.