After second or third plowing, they cut the leaves of Teprosia and spread them over the plowed fields for one night. During the next day, they plow these leaves into the soil. After this operation, they puddle the field for planting. Identifying and removing the rogue plants is a skillful technique. Farmers remove rogue plants at least 25 days before harvesting in order to avoid admixtures and also to maintain the genetic purity of a particular variety of a rice crop.
Farmers claim that rogue plants mature first.
Since most of the weed seeds are bigger than rice seeds, they are filtered out in the sieves. By threshing rice seeds manually, farmers claim that the plumule area of rice seeds are protected. Man farmers are of the opinion that tractor threshed rice seeds are of poor germination potential. This is usually done one month prior to harvesting. Healthy plots that are free from pests or diseases attack are selected.