Simazine is a triazine herbicide.^1,2,3Pre-emergent application of simazine (1 kg/ha) controls annual and perennial monocot and dicot weeds and increases crop yield in sorghum crops.¹It also controls weed emergence in kharif maize crops when applied at a concentration of 2 kg/ha.²Simazine (200 and 400 mg/kg) induces spleen cell apoptosis and reduces the proliferation of B and T cells in mice.³Formulations containing simazine have been used in the control of broadleaf weeds and annual grasses in agriculture.

1.Patro, G.K., Tosh, G.C., and Nayak, B.C.Weed control in sorghum through cultural and chemical methodsIndian J. Agric. Sci.42(12)1128-1131(1972) 2.Jadhav, S.N., and Khuspe, V.S.Relative efficacy of varying levels and times of application of simazine and atrazine on the control of weeds and yield of kharif maize (Zea mays Linn)J. Maharashtra Agric. Univ.6(2)169-171(1981) 3.Ren, R., Sun, D.-J., Yan, H., et al.Oral exposure to the herbicide simazine induces mouse spleen immunotoxicity and immune cell apoptosisToxicol. Pathol.41(1)63-72(2013)