Claim · model-written summary
All four cropping systems were net greenhouse-gas sources.
- Outcome
- net sources of GHGe0
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All four cropping systems where net sources of GHG”
t0“maize”
Title
Soil greenhouse gas fluxes and global warming potential in four high‐yielding maize systems
M. A. A. ADVIENTO‐BORBE; M. L. HADDIX; D. L. BINDER; et al. Global Change Biology 2007. doi:10.1111/j.1365-2486.2007.01421.x
Other claims from this paper (17)
- Observation Maize and soybean yields reached 80–100% of site potential.
- Association Soil CO2 fluxes associated with crop growth, temperature and moisture.
- Observation Intensive management did not consistently raise soil CO2 efflux.
- Observation Soil organic carbon rose in continuous maize systems.
- Observation Soil organic carbon fell in CS-rec.
- Observation Soil organic carbon remained unchanged in CS-int.
- Association N2O peaks associated with heat and soil moisture.
- Association N2O peaks related less clearly to soil nitrate.
- Observation Intensive systems only occasionally exceeded recommended N2O fluxes.
- Observation Fertilizer-induced N2O emissions were 1.9% to 3.5% in 2003.
- Observation Fertilizer-induced N2O emissions were 0.8% to 1.5% in 2004.
- Observation Fertilizer-induced N2O emissions were 0.4% to 0.5% in 2005.
- Observation Four systems had no consistent differences in fertilizer-induced N2O emissions.
- Observation Continuous maize had lower GWP than maize–soybean systems.
- Observation Intensive management did not significantly increase GWP.
- Observation Maize ethanol cut life-cycle emissions by 33–38% against gasoline.
- Recommendation Authors conclude optimized management can keep net GHG emissions low.