What method allowed soil to recover from cash crop producton but was impossible for poor farmers?

The method that allowed soil to recover from cash crop production is known as crop rotation, which involves alternating different types of crops in the same area across seasons to improve soil health and fertility. However, this practice often requires resources and land management knowledge that poor farmers may lack, making it economically and logistically challenging for them to implement. Consequently, many small-scale farmers are unable to adopt this sustainable approach, leading to continued soil degradation.