Final answer:
The statement is false. Farmers practice crop rotation to maintain soil fertility and prevent soil exhaustion.
Step-by-step explanation:
The statement is false. The concept of letting fields rest every seventh year is known as the practice of crop rotation. It is a way to avoid exhausting the soil and maintain its fertility. Farmers often rotate different crops in alternate seasons to reap the benefits of this practice, such as increased yield, improved soil health, and prevention of diseases and pests.