seed drill การใช้

• Good quality seed drills were not produced until the mid 18th century.
• Good quality seed drills were not produced until the mid-18th century.
• A seed drill was described in detail by Tadeo Cavalina of Bologna in 1602.
• Seed drills would not come into widespread use in Europe until the mid-19th century.
• The invention of the seed drill dramatically improved germination.
• :Use a small seed drill, or sow by hand.
• Jethro Tull invented an improved seed drill in 1701.
• Before the introduction of the seed drill, a common practice was to plant seeds by hand.
• He perfected a horse-drawn seed drill in 1700 that economically sowed the seeds in neat rows.
• Among the many agricultural instruments he design and improved, was a seed drill invented in 1754.
• There he passed the time devising an improved seed drill by sketching a design in the sand.
• The company produces and exports seed drills, cultivators, fertiliser spreaders and other farming equipment around the world.
• The sewing of selected seeds in a distance of, either by hand or by seed drill follows.
• However, seed drills of this and successive types were both expensive and unreliable, as well as fragile.
• The seed drill employed a series of runners spaced at the same distance as the ploughed furrows.
• Photographs showed a rotary cultivator with a seed drill attached, and the " motor tractor and plowing engine ".
• Valtra s products in the Brazilian market also include combine harvesters, sugar cane harvesters, self-propelled sprayers and seed drills.
• Tull's seed drill was very expensive and not very reliable and therefore did not have much of an impact.
• One of the first mechanical devices used in agriculture was the seed drill invented by Jethro Tull around 1700.