2)Select uninfested plantingmaterial. 

3) Cultural methods like earthing up,  providing irrigation, crop rotation etc.

4)Spraying the crop at monthly intervals  with 0.05 % of fenitrothion or fenthion ormonocrotophos is effective. orSoil drenching withfenthion,  endosulfan, quinalphos, monocrotophos  and fenitrothion 0.05 % at 50 & 70 DAP.