Chemical weed control in Potato crop

This is broad leaves crop and very sensitive to chemicals. So, the use of Weedicide should be very carefully. It can be done in the following manner-

1. Pre-plant soil incorporation: Use EPTC @ 1-2 kg ha^-1 or Fluchloralin @ 1.0 kg ha^-1. EPTC is known to increase the proportion of large sized tubers in the harvest, quite apart from its weed control effect.
2. Pre-emergence: Use of Alachlor @ 1.0 kg ha^-1or Pendimethalin @ 1.8 kg ha^-1 or Metribuzin @ 1.0 kg ha^-1 or Methabenzthiazuron 1.0-1.5 kg ha^-1 or Oxifluorfen @ 0.1-0.2 kg ha^-1 or Oxidiazon @ 0.75 kg ha^-1.
3. Early post emergence: Use of Paraquat and Diaquat @ 0.36-1.0 kg ha^-1 or Metribuzin @ 0.35-1.0 kg ha^-1. Apply when no more than 5-10%potao plants have just emerged from the soil. It is the most commonly used treatment in potato in India.

These herbicides can be used against all type of weeds in the potato crop. The amount of water in the solution for spraying should be proper for better results. The spraying swath should be proper. When we incorporate the Weedicide in the soil, the moisture regime of the soil should be proper for the best results.