The sustainable agricultural method described in the scenario where Sam plants corn in the spring and soybeans in the fall is known as **Rotational crops**.
Here's why:
1. **Rotational crops**: Rotational cropping involves alternating the types of crops grown in a particular field over different seasons. This practice helps maintain soil health by replenishing nutrients and reducing the likelihood of pests and diseases that target specific crops. In this case, planting corn in the spring followed by soybeans in the fall allows for a diverse range of crops to be grown, benefiting the soil and the overall ecosystem.
2. **Benefits**: Rotational cropping is a sustainable agricultural practice that promotes soil fertility, reduces the need for synthetic fertilizers, improves soil structure, and enhances biodiversity. By rotating crops like corn and soybeans, farmers can optimize nutrient utilization, reduce erosion, and increase overall crop productivity.
In conclusion, by planting corn in the spring and soybeans in the fall, Sam is practicing a sustainable agricultural method known as rotational crops, which helps maintain a healthy balance of nutrients in the soil while promoting long-term environmental sustainability.
