Sub-soiler is another farm implement that is tractor mounted and used to enhance the growth of crops. This farm equipment performs functions like deep tillage, slackening, and breaking up of soil. Sub-soiler loosens and turns the soil at a much deeper level than other farm implements used for the same purpose. This agricultural machinery effectively solves the problems of soil compaction experienced by some fertile lands. Moreover, the subsoiler is efficient because it can perform deep tillage by digging the soil up to 60 cm in depth. Good quality Massy Ferguson sub-soilers are available at Tractors PK for sale in Kenya as a solution to the soil compaction problem.