Preventive Measures
- Use certified seeds or clean seed from a known source free from admixture of weed seeds.
- Avoid application of un-decomposed organic manures as it contains viable weed seeds.
- Cleaning seeds by dipping in 2% brine solution (salt solution) helps in the selection of high-density seeds and separation of floating weed seeds.
- Off-season ploughing after rice harvest reduces weed seed replenishment.
- Deep summer ploughing once in three years