| Impact ID | 3152 |
| Impact Type | Aquaculture/Agriculture |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Azolla pinnata has been used as a green manure prior to the establishment of the French protectorate of Tonkin in Thai-Binh Province, Vietnam. |
| Reference | 33864 |
| Great Lakes Region | No |
| Cost | |
| Location | |
