Atul Ltd. Manufactures Metsulfuron Methyl 20 WP Selective Systemic Herbicide. Atul Ltd. Manufactures drugs, agrochemicals, intermediates, polymer resins, adhesives and specialties. Metsulfuron Methyl 20 WP Selective Systemic Herbicide absorbed through the roots and foliage, susceptible plants cease growth almost immediately and are killed in 7-21 days. Metsulfuron Methyl 20 WP Selective Systemic Herbicide is used for the control of predominantly broad leaf weeds and other economically important weeds of wheat and rice at the rate of 20g/ha. It is available in the brand name of CONVO.