Placing the seeds in the soil is called as sowing. Seeds are sown in two ways.
(i) Manual sowing : In this type of sowing, seeds are just sprinkled into the soil manually. This often results in the uneven distribution of seeds and may not ensure that the seeds are sown at correct depths.
(ii) Seed drill sowing : In this method the seeds are sown using a tool called seed drill. Sowing the seeds using a seed drill ensures the seeds are sown at uniform distance and at correct depths.