Question

This picture shows a large corn field in the US. The farmer plants corn on this land year after year. What are 2 sustainable farming methods that you would recommend to this farmer? What are the benefits of each of your recommendations?
grade 6

Answer 1

Planting corn on the same land every year can make soil tired, cause more pests and weeds, and increase erosion. Two simple, sustainable methods the farmer could use are:

1. Crop rotation
- What it is: Don’t grow corn on the same field every year. Instead grow other crops in between, for example soybeans (a legume), wheat, or alfalfa, then come back to corn later.
- Benefits:
- Breaks pest and disease cycles so fewer insects and diseases attack the corn.
- Legume crops (like soybeans or clover) help add nitrogen to the soil because of helpful bacteria on their roots — so the farmer can use less chemical fertilizer.
- Improves soil health and often increases yield over time.

2. Cover cropping
- What it is: After harvest, plant a fast-growing crop (cover crop) such as rye, clover, or radish that stays on the field through the fall and winter.
- Benefits:
- Protects soil from wind and water erosion and keeps soil from washing away.
- Roots hold soil together and add organic matter when they die, making soil richer and better at holding water.
- Helps control weeds and can capture leftover nutrients so they aren’t lost to runoff.

Using both methods together gives the best results: healthier soil, fewer chemicals, lower costs over time, and a safer environment.