التفاصيل البيبلوغرافية
| العنوان: |
Nitrogen Management in Northwest U.S. Sugarbeet Production. |
| المؤلفون: |
Tarkalson, David D., Olsen, Davey J., Bjorneberg, David L., Dean, Greg, Alder, Clarke |
| المصدر: |
Journal of Sugar Beet Research; Apr2023, Vol. 60 Issue 1, p11-17, 7p |
| مصطلحات موضوعية: |
SUGAR beets, NITROGEN in soils, AGRONOMISTS, SCIENTISTS, DATA analysis |
| مستخلص: |
Nitrogen (N) management is important in sugarbeet (Beta vulgaris) production. This study was conducted to continue to fine-tune N management in the Northwest U.S. sugarbeet growing area. In 2018 and 2019, field studies were conducted at 6 locations by agronomists from Amalgamated Sugar Company (ASCO) and scientists at the USDA-ARS Northwest Irrigation and Soils Research Laboratory in Kimberly, ID. The purpose was to evaluate the effect of N supply (fertilizer N + soil available N) on sugarbeet production. Five of the studies showed a significant relationship between N supply and sucrose or root yield. The N supply required to maximize sucrose yields in the 5 responsive sites ranged from 145 to 258 kg N/ha. Data from our study supports past research showing that a Static Range N Management (SRNM) approach is valid as an alternative to a Yield Goal N Management (YGNM) approach which often leads to an over-supply of N. The average N supply required to maximize yields in our study was only 1 kg N ha-1 greater than that identified in our 2005-2011 study conducted in the same area (203 kg N ha-1 vs 202 kg N ha-1). However, although optimal N supply was similar, the aver- age maximum yield in this study was 22.2% greater than in the 2005-2011 studies. We suggest that sugarbeet growers determine N supply from a representative 0-0.9 m soil samples and employ a SRNM approach to N management. Continued research over time may be required to further fine tune the SRNM N range. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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