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Harvesting Fertilized Rye Cover Crop: Simulated Revenue, Net Energy, and Drainage Nitrogen Loss

Journal Article · · Agricultural & Environmental Letters
 [1];  [2];  [2];  [3];  [2];  [2];  [2];  [4];  [5];  [6];  [7];  [2]
  1. USDA–ARS National Lab. for Agriculture and the Environment, Ames, IA (United States); Antares Group Inc.
  2. USDA–ARS National Lab. for Agriculture and the Environment, Ames, IA (United States)
  3. Rangeland Resources and Systems Research Unit, Fort Collins, CO (United States)
  4. Iowa State Univ., Ames, IA (United States)
  5. USDA–ARS, St. Paul, MN (United States)
  6. Qingdao Agricultural Univ., Qingdao (China)
  7. Pennsylvania State Univ., University Park, PA (United States)
+ Show Author Affiliations
Harvesting fertilized rye (Secale cereale L.) cover crop has been suggested as a method to increase producer revenue and biofuel feedstock production, but drainage N loss impacts are currently unknown. Using the tested Root Zone Water Quality Model (RZWQM) across several N rates, spring application of 120 kg N ha-1 prior to winter rye harvest reduced drainage N loss by 54% compared with no cover crop and by 18% compared with planted rye that was neither fertilized nor harvested. Estimates of producer revenue and net energy were also positive, with 8.3 Mg ha-1 of harvested rye biomass. If confirmed by field studies, these results suggest that double-cropping fertilized rye is a promising strategy to increase producer revenue, increase net energy production, and reduce drainage N loss.
Research Organization:
Iowa State Univ., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office
Grant/Contract Number:
EE0007088
OSTI ID:
1836073
Report Number(s):
DOE-ANTARES--07088-13
Journal Information:
Agricultural & Environmental Letters, Journal Name: Agricultural & Environmental Letters Journal Issue: 1 Vol. 3; ISSN 2471-9625
Publisher:
Wiley - American Society of Agronomy - Crop Science Society of America - Soil Science Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

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