After 22 to 25 days after transplanting of paddy, that is, when the grass has two to three leaves, then spray any herbicide like Greenlabel or Nominee Gold by mixing 100 ml in 150 liters of water. This quantity of water is sufficient for one acre of farmland. If there is more motha grass in the paddy, then mix 80 grams of companion with Greenlabel or Nominee Gold and sprinkle it.