Major weeds
Abutilon indicum	Acalypha indica	Achyranthus aspera
Chloris barbata	Cynodon dactylon	Cyperus rotundus
Dactyloctenium aegypticum	Echinochloa colonum	Euphorbia sp
Phyllanthus niruri	Trianthema portulacastrum	Tridex procumbens Image Source:www.agritech.tnau.ac.in

Cotton (irrigated)

• Apply Pendimethalin @ 3.3 l/ha  three days after sowing, using a hand operated sprayer fitted with deflecting or fan type nozzle. Sufficient moisture should be present in the soil at the time of herbicide application.  This will ensure weed free condition upto 40 days.
• One hand weeding on 45 DAS will keep weed free environment upto 60 DAS.
• Hoe and hand weed between 18th to 20th day of sowing, if herbicide is not applied at the time of sowing.

One hand weeding on 45 DAS will keep weed free environment upto 60 DAS

Cotton (Rainfed)

• Pre-emergence application of Pendimethalin 3.3 l/ha followed by one hand weeding on 40 days after crop emergence. At the time of herbicide application sufficient soil moisture must be there.
• If sufficient soil moisture is not available for applying herbicides hand weeding may be given at 10 - 20 days after crop emergence.
  
  

Rice Fallow Cotton

• Pre-emergence application of Pendimethalin 3.3 l/ha ensures weed free condition for 40 - 45 days. This should be followed by one hand weeding and earthing up during 40 - 45 days.
• Take up this operation when the top soil dries up and comes to proper condition.