In the past two decades, work has been done on non-chemical management techniques and environmentally safe alternatives to herbicides for weed control. Mechanical weeding is generally the most economical method of weed control. Using a rotary, mechanical hand weeding machine, wetland weeder, gives best results. Wetland weeders are becoming popular because they are utilized under shallow water conditions. Weeds are uprooted by the teeth of the weeder and buried in the mud due to its pull and push operations. It is safe and environmental friendly. Weeding must be done at least 3 times during one season. The weeder has to be used as soon as the weeds germinate. Earlier weeding is easier and it completely destroys weeds while they are very small.
Instructions to use:
l. Carryout the weeding wittrin 20 days after sowing. At this time, replace any plant that has not survived or damaged. Early first weeding is a must. Late weeding will lead to competition between paddy and weeds, ultimately damaging the paddy. Push the weeding machine in back and forth movement between rows. Take up weeding again 15 days later and if possible a third time. The third weeding is not important but each weeding aerates the soil and is highly rewarding. Doing a fourth weeding before the onset of flowering will further increase the yield, even if the field is already quite clear of weeds.
l. The first weeding must be carried out within 20 days after sowing.
2. Do not forget to replace the harmed or missing plants.
1. Low cost weed control.
2. Easy to operate.
3. No Chemical residue.
4. Facilitates good aeration.
5. Better development of root system.
6. Conserves soil moisture.