Irrigation Methods Practice Test

High-pressure aerial spraying, because nutrients applied to leaves always enter plants and never reach soil or waterways.

Drip irrigation with fertigation, delivering dissolved nutrients near roots in small doses, reducing leaching and runoff compared with broad application.

Furrow irrigation without controls, because uneven wetting forces plants to use all nutrients quickly, preventing pollution.

Flood irrigation, because nutrients spread evenly across the surface and therefore cannot leach below the root zone.