How long is land typically used for cropping in a slash and burn system before being abandoned?

In a slash and burn agriculture system, land is usually utilized for cropping for a duration of approximately 2 to 3 years before it is abandoned. This practice involves clearing a plot of forest land by cutting down vegetation and burning it, which temporarily enriches the soil and allows for the cultivation of crops. However, over time, the soil loses its fertility due to nutrient depletion and declining organic matter. As a result, farmers often move to a new area after a couple of years, allowing the abandoned land to regenerate naturally. This cyclical approach depends on the time needed for ecological recovery and soil restoration before it can be effectively farmed again. Hence, the choice reflecting this timeline aligns with the typical practices observed in slash and burn agriculture.