Is static nitrogen management in northwestern U.S. sugarbeet production appropriate?

Tarkalson, D.D. and Bjorneberg, D.L. and Dean, G. (2018) Is static nitrogen management in northwestern U.S. sugarbeet production appropriate? Agricultural and Environmental Letters. 3(1):1-3. 18 October 2018.

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Abstract

Nitrogen (N) management is important in sugarbeet production. Evaluation of historic data suggest that static N management (fixed N supply independent of yields) may have advantages compared to yield goal based N management in the Northwest U.S. From early 1970’s to 2011, the amount of N supply to maximize yields in research studies was within a narrow N supply range of 179 to 204 kg N/ha. Recommended N supplies have not increased as yields increased. Proposed static N recommendations aim to supply spring total available N supply (soil NO3-N and NH4-N to a depth of 0.9 m [3 ft] + fertilizer N) of less than 202 kg N/ha (180 lbs N/a) for heavier texture soils (sandy loams to clays) and less than 224 kg N/ha (200 lbs N/a) for course texture (loamy sands to sands) or shallow soils. These static supply recommendations represent maximum N supplies.

Item Type:	Article
NWISRL Publication Number:	1640
Subjects:	Irrigated crops > Sugarbeet Soil > Chemistry > Nitrogen Soil
Depositing User:	Users 6 not found.
Date Deposited:	30 Jan 2019 18:17
Last Modified:	30 Jan 2019 18:17
Item ID:	1684
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1684