Topramezone 336 g/L SC is a selective, post-emergent herbicide from the HPPD-inhibitor (pyrazolone) class, primarily used in maize (corn) crops. It delivers strong systemic control of difficult grassy and broad-leaf weeds with excellent crop safety. Its unique mode of action makes it a valuable tool for resistance management and integrated weed control.
Topramezone inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD) in susceptible weeds. This disruption causes oxidative breakdown of carotenoids and chlorophyll, resulting in a bleaching effect and eventual weed death. The herbicide is systemically taken up via foliage and roots and then translocated within the plant.

















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