Dhanuka Sempra Herbicide

SEMPRA is the first herbicide introduced in India by Dhanuka Agritech Ltd for effective control of Cyperus rotundus. It is a selective, systemic, post-emergence herbicide with WDG formulation for effective control of Cyperus rotundus from nuts in Sugarcane and Maize crop.SEMPRA has strong systemic action i.e. moves in both ways through Xylem & Phloem. SEMPRA stops the metabolic functions of Cyperus by stopping formation of the amino acids (Valin, Isoleucine, Lucine) which is responsible for the protein required for growth of the Cyperus resulting in yellowing of its leaves & nuts becoming darker & further destroying it in 14-30 days. SEMPRA has been extensively evaluated and recommended by institution/ universities like Vasantdada Sugar Institute (Maharashtra), Tamil Nadu Agricultural University, Regional Research Station (Haryana Agricultural University, Hisar), Agricultural Research Station (University of Agricultural Sciences, Dharward), U. P. Council of Sugarcane Research, Narendra Deva University of Agriculture & Technology, Faizabad (UP).SEMPRA is internationally registered in countries like India, Japan, U.S.A, Australia, Mexico, Brazil, Colombia & South Africa.

MODE OF ACTION

SEMPRA, being a sulfonylurea group herbicide, inhibits acetolactate synthase (ALS), which is the first enzyme in the biosynthetic pathway of the essential branched chain Amino acide (Valine, Leucine & isoleucine). Inhibition of ALS leads to the starvation of the plant (Cyperus rotundus) for these amino acids, resulting in death (killing) of weeds. For crop plants, in the grass family like maize sugarcane, etc. there is no effect of Sempra as these plant have strong MFO (mixed function oxidases) which breaks down the herbicide molecule to acid metabolite forms