Red Seal Agricultural Equipment Technician Practice Exam

What can indicate poor drainage in an agricultural field?

1. Uniform plant growth

2. Water pooling on the surface

3. Increased crop yield

4. Reduced pest populations

The correct answer is: Water pooling on the surface

Water pooling on the surface is a clear indicator of poor drainage in an agricultural field. When soil drainage is insufficient, excess water collects on the surface instead of being absorbed into the ground. This can lead to a variety of problems, including root suffocation, nutrient leaching, and an increase in diseases caused by waterlogged conditions. Proper drainage is essential for maintaining healthy crops and ensuring that water moves through the soil profile effectively, allowing roots to access oxygen and nutrients. Uniform plant growth, increased crop yield, and reduced pest populations generally suggest favorable conditions in the field. For instance, uniform plant growth is often associated with adequate moisture levels and good soil health, while increased crop yield indicates that plants are thriving. Similarly, reduced pest populations can be a sign of effective pest management practices, but these factors do not directly indicate issues with drainage. In contrast, water pooling serves as a direct visual cue of drainage problems that could significantly impact crop health and productivity.