Suction Cup Samplers for Estimating Nitrate-Nitrogen in Soil Water in Irrigated Sugarbeet Production

Abstract

Efforts have increased to measure nitrate losses from farmland under different management practices due to environmental and public concerns over levels of nitrate-nitrogen (NO 3-N) in surface and ground waters. This study evaluated the effect of conventional tillage (CT) and strip tillage (ST) practices and three N application rates on NO 3-N concentrations in soil water at a 76 cm depth under irrigated sugar-beet (Beta vulgaris L.) in a clay loam soil. Nitrogen rates were applied as dry urea at 120