. Jhum cultivation (shifting cultivation) requires
(a)long time for the regeneration of soil.
(b)alternate crop pattern.
(c)huge amount of fertilizers.
(d)excessive soil erosion for crop production.
(a) long time for the regeneration of soil.
Shifting cultivation is a type of farming in which fields are used for a few years, and are then left to grow in a wild state for many years. This allows the soil to recover and become rich and fertile again.