Claim · model-written summary
Unaccounted applied nitrogen over 1980–2008 ranged from 845 to 1665 kg N ha−1 at Ellerslie.
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionQualifier
Verbatim
e0“The amounts of applied N unaccounted for over the 1980 to 2008 period ranged from 1114 to 1846 kg N ha−1 at Breton and 845 to 1665 kg N ha−1 at Ellerslie”
Title
Sukhdev S. Malhi; M. Nyborg; M. F. Dyck; et al. Communications in Soil Science and Plant Analysis 2011. doi:10.1080/00103624.2011.609262
Other claims from this paper (12)
- Intervention effect Increasing nitrogen rate up to 100 kg N ha−1 increased seed yield under both tillage systems.
- Intervention effect Increasing nitrogen rate up to 100 kg N ha−1 increased straw yield under both tillage systems.
- Intervention effect Increasing nitrogen rate up to 100 kg N ha−1 increased total nitrogen uptake in seed and straw.
- Intervention effect Conventional tillage increased average seed yield by 279 kg ha−1 relative to zero tillage.
- Intervention effect Conventional tillage increased average straw yield by 252 kg ha−1 relative to zero tillage.
- Intervention effect Conventional tillage increased average total nitrogen uptake by 6.0 kg N ha−1 relative to zero tillage.
- Association Tillage differences were greater at Breton than at Ellerslie.
- Intervention effect At zero nitrogen, straw retention tended to increase seed yield relative to straw removal.
- Intervention effect At zero nitrogen, straw retention tended to increase straw yield relative to straw removal.
- Intervention effect At zero nitrogen, straw retention tended to increase total nitrogen uptake relative to straw removal.
- Observation Unaccounted applied nitrogen over 1980–2008 ranged from 1114 to 1846 kg N ha−1 at Breton.
- Mechanism Long-term straw retention suggests gradual improvement in soil productivity.