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| A Timeline of
Agricultural Development |
 Stephen Moulton
Babcock developed a test to show the
amount of butterfat in milk. That test helped fix
standards for municipal milk inspection and set
fair market prices according to quality grading.
He also carried out research in the fields of
nutrition and the chemistry of vitamins. |
 George Washington
Carver advocated alternating cotton
crops with other crops to restore nitrogen and
other nutrients to the soil. To enhance the
attractiveness of alternative crops, he developed
a variety of uses for each. He devised more than
300 uses for the peanut alone. |
 Jethro Tull
realized that the sowing of grain seed by hand
was very wasteful and decided to develop a more
efficient method. In 1701, he invented the
horse-drawn seed drill, and his design remained
the standard for over a century. |
