Sugarbeet Response to Nitrogen under Sprinkler and Furrow Irrigation..

Abstract

- row irrigated sugarbeet. The objective of the current study was to evaluate sugarbeet response to varying rates of nitrogen under sprinkler and furrow irrigation. Plots with varying rates of nitrogen were set up under a linear overhead sprinkler irrigation system and under furrow irrigation. each year, the two irrigation sites were located in the same field and were separated by 15 sugarbeet rows (9 m). Sugarbeet grown under furrow irrigation achieved greatest sucrose yield with available n amounts ranging from 141-197 kg/ha. under furrow irrigation, sodium and amino-n continued to increase as applied n was increased. This resulted in sucrose loss to molasses continuing to increase with increased applied n, while percent extraction continued to decrease. Sugarbeet grown under sprinkler irrigation achieved greatest sucrose yield when available n ranged from 112-169 kg/ha. Impurities and sucrose loss to molasses were significantly increased in sprinkler irrigated sugarbeet when n at any rate was applied when compared to sugarbeet with no applied n.