Sugarcane Thirteenth to fourteenth week practices

• In fourteenth week we should give nitrogen @ 40-45 kg/acre.
• After giving the fertilizer to the crop then Irrigation to be done.

Root Grub: 

Symptoms:

• Grubs are fleshy “C” shaped, whitish yellow in color found close to the base of the clump. Adult beetles are a rusty-red color just after emerging from the pupal stage, but turn nearly black.
• Yellowing and wilting of leaves. Drying of the entire crown. Affected canes come off easily when pulled. Cause extensive damage to roots and base of shoot.

Management:

Cultural control:

Grow resistant varieties like- Co 6304, Co 1158, Co 5510. 

Mechanical Control:

At the onset of monsoon, they collect and destroy the adult beetles by shaking the branches of trees on which they settle during night. Set up light trap @1 in Nos/acre for trapping of white grubs adults and kill them in kerosene oil. 

Biological Control:

Entomopathogenic nematodes (EPNs) can be sprayed at the rate of 100 million nematodes per acre, in root grub infested sugarcane fields. Apply Beauveria brongniartii @ 1 kg/acre formulation mix with FYM@30kg at time of planting. 

Chemical Control:

Fipronil 5% SC @ 300- 400 ml or Imidacloprid 17.8% SL @ 150 ml/acre dissolve in 250-300 lit. of water.