- The use of good quality rice seeds - is one of the easiest ways to reduce the weed infestations. Weeds have been reported to move from one continent to another along with the seed. Weeds are observed to move from one field to the other, through the exchange of bad quality seed, from one grower to the other. Weed seeds sometimes stuck to the machines and by floating through irrigation water also move from one field to the other.
- Weeds often mimic the crop in seed size, and shape which enhances their opportunity to contaminate rice seed and spread. Weeds that mature and shatter before the crop tend to spread more slowly and are more localized than weeds that mature at the same time as the rice crop.
- Early-shattering weeds are spread mostly by the movement of equipment and in water and air.
- Choose a species/cultivars which has higher growth vigour during initial growth stages and covers the soil surface as rapidly and completely as possible, thus preventing robust growth of weeds.
Destroying or removing a weed completely from a crop, an area, or a geographic region. This is accomplished through eliminating the living plants and by exterminating the seeds in the soil, usually by burning or applying by soil sterilants.
Reducing weed density or damage to an acceptable level. It includes use of such measures like sanitation, cultural / mechanical/ biological/ chemical methods.