Tull, Jethro, 1674–1741, English agriculturist and inventor. He studied methods of agriculture in England, France, and Italy and influenced British agriculture through his writings, which include The Horse-Hoeing Husbandry (1733). Tull advocated the use of manures, pulverizing the soil, planting with drills, and thorough tilling during the growing period. He invented (c.1701) a mechanical drill for sowing.
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