Growing crops was essential for early European settlers in North America to survive as they had depleted supplies and little knowledge of the local environment. Crop production was crucial, with 90% of the workforce farming in Jefferson's time and 40% in 1900. Now less than 1% of Americans farm. Crop production requires skills in biology, agronomy, mechanics and marketing. It involves 8 components throughout the year: operations, equipment, environmental concerns, and best practices for each component.