Mealybug
In sugarcane, for control of mealy bug, apply below mentioned insecticide
Plant parts affected
Plant and Root
Initial diagnosis:
Main cane stunned also attack roots. Yellowing of leaves
Symptoms:
Pinkish oval insects beneath leaf sheath on the nodes, with whitish mealy coating.
Damage type:
Sooty mold develops on the honey dew giving blackish appearance on canes which attack the black ants
Take a picture of the disease and get a solution