2 Results and analysis
2. 1 The effects of different CPPU treatments on
yield parameters and starch content of cassava
2. 1. 1 Perimeter of tubers The plants of both varieties treated with the combined treatment of CPPU ( spray +
irrigation) were found to have the largest perimeter of tuber, the average perimeters of tubers in Nanzhil99
and SC8 were recorded as 14.56 and 16.58 cm, whichwere 20.03 and 34.58% higher compared to control ,