Claim · model-written summary
Lower nitrogen reduced seed yield with full irrigation.
- Taxon
- winter oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- Lower nitrogen levelse0
- Outcome
- seed yielde0
- Direction
- reducede0
- Qualifier
- fully irrigated treatmentse0
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“Lower nitrogen levels reduced seed yield in the fully irrigated treatments; in the unirrigated treatments, however, the yield was slightly higher at the 0 N and 100 N level than at 200 N in both 1992 and 1993.”
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 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.
- Intervention effect Lower nitrogen mainly reduced PAR interception.
- 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.