Non-Point Source Pollution Envirothon Practice Test

An Agricultural BMP example is which of the following?

Detention basin Rain garden Cover crop Riparian buffer

Correct Answer:

Cover crop

Explanation:

Agricultural best management practices are methods used to reduce pollution from farming by protecting soil and filtering runoff before it reaches water bodies. A cover crop fits this well because planting an extra crop to grow when the main crop isn’t active keeps soil covered, reduces erosion, improves soil health, and captures leftover nutrients that might otherwise run off fields. Detention basins and rain gardens are mainly stormwater tools used in urban or developed settings to control runoff, not as direct field-level soil-protection practices. A riparian buffer along waterways is also a valid agricultural BMP, but a cover crop is the most universally applicable example for protecting cropland soil and reducing nutrient loss across many farming scenarios.

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