Claim · model-written summary
Nitrogen fixation rates had increased severalfold by four weeks after cutting.
- Taxon
- Birdsfoot Trefoilt0
- Outcome
- N 2 fixation ratese0
- Direction
- increasede0
- Value
- several folde0
- Qualifier
- Four weeks after cuttinge0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSetting
Verbatim
e0“Four weeks after cutting, when N 2 fixation rates had increased several fold”
t0“Birdsfoot Trefoil”
Title
A. L. Barta Crop Science 1979. doi:10.2135/cropsci1979.0011183x001900050042x
Other claims from this paper (11)
- Intervention effect Supplemental nitrogen sharply decreased acetylene reduction rate four weeks after cutting.
- Intervention effect Supplemental nitrogen doubled shoot dry weight four weeks after cutting.
- Intervention effect Supplemental nitrogen did not significantly affect root dry weight.
- Intervention effect Supplemental nitrogen did not significantly affect root total nonstructural carbohydrate.
- Intervention effect Nitrogen-supplemented roots accumulated less photosynthate at both two and four weeks after cutting.
- Mechanism Shoot growth was interpreted as the dominant photosynthate sink.
- Mechanism Photosynthate accumulation was interpreted as resistant to changes in nitrogen source or supply.
- Observation Metabolite classes differed significantly in radiolabel distribution only at the two-week harvest.
- Intervention effect At two weeks, labeled sugars were metabolized more rapidly into growth intermediates in nitrogen-supplemented plants.
- Mechanism Available soil nitrogen was interpreted as potentially important for rapid regrowth after cutting.
- Intervention effect Nitrogen source did not influence radiolabel distribution among metabolites at four weeks.