Final answer:
Horticulture is not limited to low-intensity slash-and-burn methods; it includes diverse farming practices, while slash-and-burn is specifically used in extensive horticulture for sustainable land use in areas with poor soil.
Step-by-step explanation:
The statement that horticulture refers to low-intensity farming that often uses slash and burn techniques to clear the land is False. Horticulture and slash-and-burn cultivation can be related, but the former is not defined by the use of such techniques. Slash-and-burn is a method used in extensive horticulture, which involves clearing land by felling trees and burning the vegetation. It is considered an extensive (land) or shifting cultivation strategy, whereas horticulture can include a variety of practices that manage small-scale gardens and plots, often using organic methods like animal dung for fertilization. Slash-and-burn, specifically, is optimal for areas with depleted soils such as rainforests, where it is used as a sustainable method for small populations due to its caloric efficiency and low labor requirement. It is land extensive and requires rotating to new areas once the soil loses its fertility. Intensive agriculture, on the other hand, includes high-intensity farming techniques such as irrigation, plows, draft animals, and continuous reuse of the same plots, leading to much larger yields suitable for supporting large populations.