Temaprozone is a systemic herbicide used to control a wide range of grassy and broadleaf weeds in various crops such as soybeans, corn, wheat, and rice. It belongs to the chemical class of triazolinones and works by inhibiting the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), which is involved in the synthesis of carotenoid pigments in plants.
Without these pigments, susceptible weeds experience chlorosis and eventually die. Temaprozone is valued for its efficacy against both emerged and germinating weeds, its broad-spectrum activity, and its low application rates.
However, proper application and stewardship practices are crucial to minimize the risk of crop injury and environmental impact.