Which two farming practices are most commonly cited as sustainable farming methods?

• A. Monoculture and heavy irrigation
• B. Slash-and-burn and desert irrigation
• C. Integrated Pest Management (IPM) and no-till or reduced-till farming
• D. Fertilizer-intensive and pesticide-heavy

Answer: (C)

Sustainable farming aims to minimize environmental impact while maintaining productivity, so the best-supported combination is IPM paired with no-till or reduced-till farming. Integrated Pest Management uses regular monitoring, pest thresholds, biological controls, and targeted interventions to reduce reliance on broad-spectrum pesticides. This lowers chemical inputs, protects beneficial species, and supports long-term pest resilience. No-till or reduced-till farming minimizes soil disturbance, helping preserve soil structure, organic matter, and microbial life, while reducing erosion, runoff, and fuel use. Together, these practices promote healthier soils, conserve water, and lessen environmental harm, which is why they’re commonly cited as sustainable.

Monoculture with heavy irrigation tends to degrade biodiversity and exhaust water resources. Slash-and-burn and desert irrigation involve deforestation and water-scarce environments, leading to ecological damage and unsustainable water use. Fertilizer-intensive and pesticide-heavy approaches rely on synthetic chemicals that can pollute water, harm non-target species, and reduce soil health over time.