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Simulating long-term impacts of winter rye cover crop on hydrologic cycling and nitrogen dynamics for a corn-soybean crop system

Dates

Year
2010

Citation

Qi, Z., Helmers, M. J., Malone, R. W., and Thorp, K. R., 2010, Simulating long-term impacts of winter rye cover crop on hydrologic cycling and nitrogen dynamics for a corn-soybean crop system: Transactions of the ASAB, v. 54, p. 1575-1588.

Summary

Planting winter cover crops into corn‐soybean rotations is a potential approach for reducing subsurface drainage and nitrate‐nitrogen (NO3‐N) loss. However, the long‐term impact of this practice needs investigation. We evaluated the RZWQM2 model against comprehensive field data (2005‐2009) in Iowa and used this model to study the long‐term (1970‐2009) hydrologic and nitrogen cycling effects of a winter cover crop within a corn‐soybean rotation. The calibrated RZWQM2 model satisfactorily simulated crop yield, biomass, and N uptake with percent error (PE) within ±15% and relative root mean square error (RRMSE) <30% except for soybean biomass and rye N uptake. Daily and annual drainage and annual NO3‐N loss were simulated satisfactorily, [...]

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  • National and Regional Climate Adaptation Science Centers
  • Northeast CASC

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Type Scheme Key
ISSN http://sciencebase.gov/vocab/identifierScheme 2151-0032

Citation Extension

citationTypeJournal Article
journalTransactions of the ASAB
parts
typePages
value1575-1588
typeVolume
value54

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