Tull was born in Basildon, Berkshire, to JethroTull, Sr and his wife Dorothy, née Buckeridge or Buckridge. He was baptised there on 30 March 1674. He grew up in Bradfield, Berkshire and matriculated at St John's College, Oxford at the age of 17. He was educated for the legal profession, but appears not to have taken a degree. He became a member of Staple Inn, and was called to the bar on 11 December 1693, by the benchers of Gray's Inn.

Tull died in 1741 at Prosperous Farm at Hungerford. He is buried in the churchyard of St Bartholomew's Church, Lower Basildon, Berkshire, near his birthplace. His gravestone bears the burial date 9 March 1740 using the Old Style calendar, which is equivalent to the modern date 20 March 1740.

Drill husbandry: JethroTull invented some machinery for the purpose of carrying out his system of drill husbandry, about 1733. His first invention was a drill-plough to sow wheat and turnip seed in drills, three rows at a time. There were two boxes for the seed, and these, with the coulters, were placed one set behind the other, so that two sorts of seed might be sown at the same time. A harrow to cover in the seed was attached behind.

On earth: JethroTull considered earth to be the sole food of plants. "Too much nitre," Tull tells us, "corrodes a plant, too much water drowns it, too much air dries the roots of it, too much heat burns it; but too much earth a plant can never have, unless it be therein wholly buried: too much earth or too fine can never possibly be given to their roots, for they never receive so much of it as to surfeit the plant." Again, he declares elsewhere, "That which nourishes and augments a plant is the true food of it. Every plant is earth, and the growth and true increase of a plant is the addition of more earth." And in his chapter on the "Pasture of Plants," Tull told his readers with great gravity that "this pasturage is the inner or internal superficies of the earth; or, which is the same thing, it is the superficies of the pores, cavities, or interstices of the divided parts of the earth, which are of two sorts, natural and artificial. The mouths or lacteals of roots take their pabulum, being fine particles of earth, from the superficies of the pores or cavities, wherein their roots are included."

Hoeing by hand: The hand hoe is an instrument too well known to need any description. The operation of hoeing is beneficial, not only as being destructive of weeds, but as loosening the surface of the soil, and rendering it more permeable to the gases and aqueous vapour of the atmosphere. Hoeing, therefore, not only protects the farmer's crops from being weakened by weeds, but it renders the soil itself more fertile, as more capable of supplying the plants with their food. JethroTull was the first who warmly and ably inculcated the advantages of hoeing cultivated soils. He correctly enough told the farmers of his time, that as fine hoed ground is not so long soaked by rain, so the dews never suffer it to become perfectly dry. This appears by the plants which flourish in this, whilst those in the hard ground are starved. In the driest weather good hoeing procures moisture to the roots of plants, though the ignorant and incurious fancy it lets in the drought.

https://en.wikipedia.org/wiki/Jethro_Tull_(agriculturist)