Final answer:
Horticulture involves small-scale, sustainable, and often organic cultivation of crops with rotating plots, while agriculture, especially intensive agriculture, employs intensive methods on the same plots continuously, supporting larger populations and leading to urban development.
Step-by-step explanation:
The term horticulture is derived from the Latin words for garden (hortus) and culture (cultura), and refers to a subsistence strategy that entails the small-scale cultivation of crops, often involving the rotation of plots and letting fields lay fallow to regenerate soil nutrients. Horticulturists may use organic methods and have plots in various stages of cultivation and fallow, which is a system known as extensive or shifting cultivation. In contrast, agriculture, particularly intensive agriculture, involves more permanent and intensive methods such as the use of plows, irrigation systems, and continuous cultivation of the same plots, supporting larger populations and often leading to the development of villages, towns, and cities. Horticulturists can work in private and governmental laboratories, greenhouses, botanical gardens, and the production or research fields, applying their knowledge of genetics and plant physiology to improve crop production.