In the first part of experiment, two cassava varieties, viz., Nanzhil99 and SC8 were treated differently (foliar spray, irrigation and spray + irrigation) with 1%o CPPU solution at the expansion stage of root tuber.Secondly, the cassava varieties viz., Nanzhil99, SC5, GR911 and SC8 were sprayed with 15% PP333 solution (900 kg/
ha, 1000 mg/L) at seedling stage