COA
ITEM |
FAO specification |
RESULT |
Appearance |
A homogeneous white crystalline or powder solid, free from visible extraneous matter and added modifying agents |
White crystalline powder |
Content of A.I.，g/l |
Not less than 910 |
950 |
Mode of action
Nicosulfuron is a branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts by inhibiting biosynthesis of the essential amino acide valine and isoleucine, hence stopping cell division and plant growth. Crop selectivity derives from selective metabolism (P450-mediated pyrimidine-5-hydroxylation. followed by conjugation with glucose). Nicosulfuron is a selective systemic herbicide, absorbed by the foliage and roots, with rapid translocation to the meristematic tissues in 4－5 days, and the weeds are killed in 20－25 days.