In Sindh on dobari lands linseed is also grown mixed with field peas or rape and mustard. Linseed follows the same rotation as other cereal crops. It performs very badly in continuous rotation. Linseed following legumes or sorghum gives excellent results. Irrigation. In Sindh, linseed should be given four to five irrigations, the first 30 days after sowing, and the subsequent at intervals of 20-25 days depending on temperature and soil moisture. In the Punjab, three to four irrigations are needed, the first 15-20 days after planting, and the subsequent as and when needed depending upon temperature and soil moisture.
Harvesting, threshing, and storage. The crop is harvested when the plants turn golden-yellow, the leaves dry, and the capsules become brown and the seeds shiny. If fibre is also desired, the crop is harvested at the stage of capsule maturity when the crop is still green. In Sindh, the crop is har- vested at the end of April, and in the Punjab during the first week in May. The harvested crop is threshed either by bullocks or by beating it with sticks. After separation, the seeds are dried in the sun and then stored.