Native Species

A naturally occurring plant or other organism that is within its range and normal environment.

Nitrate

A salt of nitric acid; a common water pollutant.

Nonpoint Source

Nutrient and pollution sources not discharged from a single point, e.g. runoff from agricultural fields, feedlots, residential lawns, septic leach fields, or urban streets, etc.

NPS

Nonpoint source

NRCS

USDA Natural Resources Conservation Service

NSERL

National Soil Erosion Research Laboratory (West Lafayette, Indiana)

Nutrient

Elements or compounds essential to growth and development of living things (e.g., nitrogen, potassium, phosphorus).