Claim · model-written summary
A reduced N rate increased N-use efficiency and reduced the risk of high N surpluses under optimized rotation.
- Taxon
- oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- reduced N ratee0
- Outcome
- N-use efficiencye0
- Direction
- increasede0
- Qualifier
- when the rotation was optimisede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“A reduced N rate increased N-use efficiency and reduced the risk of high N surpluses without a significant/equivalent decrease of the seed yield when the rotation was optimised”
t0“oilseed rape”
Title
Impacts of high intensity crop rotation and N management on oilseed rape productivity in Germany
Hannes Hegewald; Barbara Koblenz; Monika Wensch-Dorendorf; et al. Crop and Pasture Science 2016. doi:10.1071/cp15214
Other claims from this paper (10)
- Intervention effect Seed yield, oil yield and N-use efficiency declined with greater oilseed rape cropping intensity in 2005–2012.
- Intervention effect Higher N rates increased seed and oil yields when oilseed rape followed WW-WW.
- Intervention effect Oilseed rape monoculture had the lowest yield regardless of N rate.
- Intervention effect At 120 kg N ha–1, seed yield was 4.61 t ha–1 after WW-WW and 4.28 t ha–1 in monoculture.
- Intervention effect At 180 kg N ha–1, seed yield was 4.81 t ha–1 after WW-WW and 4.42 t ha–1 in monoculture.
- Intervention effect Higher N rates generally reduced N-use efficiency.
- Observation WW-WW-OSR had the highest N-efficiency at 38.4 kg kg–1.
- Observation Continuous OSR at 180 kg N ha–1 had the lowest N-efficiency at 24.5 kg kg–1.
- Intervention effect A reduced N rate reduced the risk of high N surpluses under optimized rotation.
- Intervention effect A reduced N rate did not significantly decrease seed yield under optimized rotation.