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Second Agricultural Revolution
Period that brought improved methods of cultivation, harvesting, and storage of farm produce that began in the late 1600s and continued through the 1930s.
Seed Drill
A machine for planting seeds in a row.
Mechanical Reaper
A machine used to harvest grain crops mechanically; patented by Cyrus McCormick in 1831.
Scythe
An agricultural hand tool with a curved blade used for cutting grain in the fields.
Agrichemicals
Chemical compounds obtained from petroleum and natural gas for use in agriculture; agriculture; agrichemicals include fertilizers, pesticides, and herbicides.
Synthetic Fertilizer
Industrially manufactured nitrogen, phosphorus, and potassium, made from petroleum by-products, contains higher concentrations of nutrients for plants than natural fertilizers.
