Governor® 580SE is a unique mixture of 3 effective active ingredients belonging to different herbicide groups namely Acetochlor 340 g/l, Atrazine 200 g/l and Mesotrione 40 g/l. Acetochlor is a slective herbicide, absorbed mainly by shoots and roots of germinating weeds. It inhibits cell division by blocking protein synthesis and long chain fatty acids. Its mode of action is elongase inhibition, and inhibition of geranylgeranyl pyrophosphate (GGPP) cyclization enzymes, part of the gibberellin pathway. Mesotrione is a selective pre- and post-emergence control of a wide range of broad-leaved and grass weeds. It is a member of the benzoyl cyclohexane-1,3-dione family of herbicides, which are chemically derived from a natural phytotoxin obtained from the Californian bottlebrush plant, Callistemon citrinus. The compound acts by competitive inhibition of the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), a component of the biochemical pathway that converts tyrosine to plastoquinone and alpha-tocopherol. It is rapidly taken up by weed species following foliar application, and is distributed within the plants by both acropetal and basipetal movement. Atrazine is a selective systemic herbicide, absorbed principally through the roots, but also through the foliage, with translocation acropetally in the xylem and accumulation in the apical meristems and leaves. It interferes with photosynthesis of broadleaf plants and grasses. It is used both before and after they sprout.Governor® 580 SE offers an excellent solution for cost effective, long lasting residual weeds control in maize, sweet corn and sugarcane fields used as apre- emergence and early post-emergence to control annual broadleaved weeds and grass weeds. Pre emergence means applying immediately after planting or sowing your maize seeds but not emerged from soil. Application Rate is 2.5L per Hectare (250ml per 20l of water) when the soil is well moist for effective weed management. Re-Entry Interval: 24 Hours