HORTICULTURE

Detailed explanation-1: -Shifting cultivation is also a primitive form of agriculture, although there is no reason why it should only support subsistence farming. As the name implies, it involves periodic shifts to a new piece of land, the fertility of the original patch having been exhausted.

Detailed explanation-2: -Answer and Explanation: The main difference between intensive subsistence agriculture and shifting cultivation is that with shifting cultivation the land that is being farmed moves every few years while with intensive subsistence agriculture the farmed land is essentially permanent.

Detailed explanation-3: -The different forms of shifting cultivation described include slash-and-burn type of shifting cultivation, the chitemene system, the Hmong system, shifting cultivation cycle in the Orinoco floodplain, the slash-mulch system, and the plough-in-slash system.

Detailed explanation-4: -Shifting agriculture is a type of subsistence farming.