Weed control is important to prevent losses in yield and production costs, and to preserve good grain quality. Specifically, weeds
Weed management should be practiced during specific stages of rice production:
Control of weeds during land preparation is crucial to reduce the amount of weed pressure in the field. Land preparation should start 3−4 weeks before planting. Plowing destroys weeds and remaining stubble from the previous crop. Weeds should be allowed to grow before the next cultivation. In addition, a level field helps retain a constant water level that controls weeds.
To control weeds in the nursery
Weed control is critical after planting until the canopy closes. Control methods vary depending on the rice ecosystem and planting method:
Pre-emergence herbicides should not be applied in standing water to avoid toxicity.