Claim · model-written summary
Lower nitrogen mainly reduced PAR interception.
- Taxon
- winter oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- lower nitrogen levelse0
- Outcome
- interception of PARe0
- Direction
- reducede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“∊t was little affected by lower nitrogen levels, which mainly reduced the interception of PAR.”
t0“Winter Oilseed Rape”
Title
The Effects of Drought and Nitrogen on Light Interception, Growth and Yield of Winter Oilseed Rape
M. N. Andersen; T. Heidmann; F. Plauborg Acta Agriculturae Scandinavica Section B - Soil & Plant Science 1996. doi:10.1080/09064719609410947
Other claims from this paper (19)
- Intervention effect Drought strongly decreased seed yield at 200 kg N ha−1 during 1992 and 1993.
- Intervention effect Drought strongly decreased pod number at 200 kg N ha−1 during 1992 and 1993.
- Intervention effect Drought strongly decreased seeds per pod at 200 kg N ha−1 during 1992 and 1993.
- Intervention effect Drought during flowering increased seed weight.
- Intervention effect Straw yield was less affected by drought.
- Intervention effect Lower nitrogen reduced seed yield with full irrigation.
- Intervention effect Under no irrigation, yield at 0 N was slightly higher than at 200 N.
- Intervention effect Under no irrigation, yield at 100 N was slightly higher than at 200 N.
- Intervention effect Nitrogen increased nitrogen concentration of the seeds.
- Intervention effect Nitrogen decreased oil concentration.
- Intervention effect drought increased nitrogen concentration of the seeds.
- Intervention effect drought decreased oil concentration.
- Observation The dry-matter to radiation quotient for top biomass growth was 2.38 g MJ−1 without drought limitation.
- Intervention effect Prolonged drought reduced interception of PAR.
- Intervention effect Prolonged drought reduced ∊1.
- Intervention effect Lower nitrogen had little effect on ∊t.
- Association Seed yield was linearly related to PAR intercepted during pod filling, with an apparent quotient of 2.47 g MJ−1.
- Observation With severe flowering-phase drought, up to 65% of pod-filling assimilates entered straw.
- Mechanism The authors attributed the high straw allocation to limited seed sink size.