QAL Laws & Regulation Practice Exam

What is the purpose of terrace practices in agriculture?

1. To increase crop yield

2. To prevent erosion and runoff of pesticides

3. To facilitate irrigation

4. To enhance soil fertility

The correct answer is: To prevent erosion and runoff of pesticides

Terrace practices in agriculture primarily aim to prevent erosion and runoff, which is why the selection of this response aligns with the fundamental purpose of these practices. Terracing involves constructing a series of steps or flat areas on sloped land, creating a more level field for farming. This design significantly reduces the speed of water runoff during rainfall, allowing for better water absorption and minimizing soil erosion. As a result, terraces help maintain the integrity of the soil structure and prevent the loss of nutrient-rich topsoil, which is crucial for sustainable agricultural practices. While increasing crop yield can be a secondary benefit of terrace practices due to improved water retention and soil stability, the primary intention is to implement a method that controls the natural processes of erosion and runoff. Similarly, facilitation of irrigation and enhancement of soil fertility can occur as indirect benefits; however, the immediate purpose of terrace systems is rooted in soil and water conservation.