gen-define-tillage-versus-no-till-and-give-one-short-worked-exam-9127

Define tillage versus no-till and give one short worked example.

# Tillage vs. No-Till **Tillage**: The mechanical preparation of soil through plowing, digging, or stirring before planting. This disrupts soil structure, buries crop residues, and creates a fresh seedbed. **No-Till**: A conservation practice where crops are planted directly into undisturbed soil with previous crop residues left on the surface. Only a narrow slot is opened for seed placement. ## Worked Example: Corn Production **Scenario**: A farmer is growing corn on 100 acres and comparing both methods. ### Tillage Approach: - Spring: Plow field (6" deep), disk 2x, harrow once - Fuel cost: ~$25/acre - Soil erosion: 5 tons/acre/year - Soil organic matter: Decreases 0.1%/year - Labor: 8 hours/acre for field prep ### No-Till Approach: - Spring: Plant directly through last year's residue using no-till drill - Fuel cost: ~$10/acre - Soil erosion: 0.5 tons/acre/year - Soil organic matter: Increases 0.05%/year - Labor: 2 hours/acre for planting **Result**: The no-till farmer saves $1,500 in fuel costs (100 acres × $15 savings), reduces erosion by 90%, and saves 600 labor hours while building soil health over time.