**41. Fertilizer**

By applying chitosan in soil, it has been demonstrated that it stops plant wilting because it acts as a potent fertilizer due to the high concentration of nitrogen content in its molecular structure [220,221]. Also, it has been used as a soil amendment, controlling diseases caused by fungal species like *Fusarium acuminatum, Fusarium sp, Cylindrocladium floridanum* and *Aspergillus flavus* [208, 218, 222].
