Agriculture and Environment Sustainable Agriculture & Environmental Conservation 1 — Questions and Answers
Question 1: What is integrated pest management (IPM) in US agriculture?
- Exclusive use of chemical pesticides
- A strategy combining biological, cultural, and chemical controls to minimize pest damage economically and safely (Correct answer)
- Using only organic pesticides
- Eliminating all pesticide use on farms
Correct answer: A strategy combining biological, cultural, and chemical controls to minimize pest damage economically and safely
IPM is a science-based approach that combines multiple pest control strategies to reduce reliance on pesticides while maintaining economic viability.
Question 2: Which greenhouse gas is primarily emitted from flooded rice paddies and livestock operations?
- Carbon dioxide (CO2)
- Methane (CH4) (Correct answer)
- Nitrous oxide (N2O)
- Ozone (O3)
Correct answer: Methane (CH4)
Methane is produced by anaerobic decomposition in flooded rice paddies and by enteric fermentation in ruminant livestock like cattle.
Question 3: What is agroforestry?
- Replacing forests with agricultural land
- Integrating trees and shrubs with crops or livestock in a single land management system (Correct answer)
- Harvesting timber from national forests
- Converting farmland to reforestation
Correct answer: Integrating trees and shrubs with crops or livestock in a single land management system
Agroforestry integrates trees with crops and/or livestock to create productive, diverse systems that improve environmental outcomes and farm resilience.
Question 4: What does the term 'nutrient management plan' require farmers to do?
- Eliminate all fertilizer use
- Apply nutrients based on soil tests and crop needs to minimize runoff and maximize efficiency (Correct answer)
- Use only synthetic fertilizers
- Apply maximum fertilizer for highest yields
Correct answer: Apply nutrients based on soil tests and crop needs to minimize runoff and maximize efficiency
Nutrient management plans guide farmers to apply the right amount of nutrients at the right time and place, reducing waste and environmental pollution.
Question 5: Which US law regulates the discharge of pollutants, including agricultural runoff, into waterways?
- Clean Air Act
- Clean Water Act (CWA) (Correct answer)
- Safe Drinking Water Act
- Endangered Species Act
Correct answer: Clean Water Act (CWA)
The Clean Water Act regulates water pollution including agricultural nonpoint source pollution, requiring states to implement best management practices.
Question 6: What is crop rotation and what environmental benefit does it provide?
- Growing the same crop every year to maximize yield consistency
- Alternating different crops on the same land to break pest cycles and improve soil health (Correct answer)
- Rotating crops between different farms to reduce transportation costs
- Using crop residues as animal feed
Correct answer: Alternating different crops on the same land to break pest cycles and improve soil health
Crop rotation alternates different crops seasonally or annually, breaking pest and disease cycles, reducing fertilizer needs, and improving soil organic matter.
Agriculture and Environment Sustainable Agriculture & Environmental Conservation 1
What is integrated pest management (IPM) in US agriculture?