Claim · model-written summary
Symbiotic N2 fixation decreased as available soil N or fertilizer N increased.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarise0 - Treatment
- fertilizer Ne2
- Outcome
- The amount of symbiotic N 2 fixede2
- Direction
- decreasede2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Beans ( Phaseolus vulgaris L.) often respond to N fertilization”
e2“The amount of symbiotic N 2 fixed decreased as the available soil N or fertilizer N increased”
Title
Nitrogen Sources for Bean Seed Production1
D. T. Westermann; G. E. Kleinkopf; L. K. Porter; et al. Agronomy Journal 1981. doi:10.2134/agronj1981.00021962007300040022x
Other claims from this paper (9)
- Observation Symbiotic N2 fixation contributed up to 90 kg N/ha to bean plants near physiological maturity.
- Association Symbiotic N2 fixation increased as the N required by individual cultivars increased.
- Association The response to N fertilization depended on the cultivar and on the N available from soil.
- Observation Measured fertilizer N recoveries ranged from 7 to 33%.
- Observation An average of 52% of total N uptake was taken up after the maximum symbiotic N2 rate occurred.
- Observation Seed contained an average of 60% of the total N uptake.
- Intervention effect A low N fertilization rate applied when soil N was low ensured early vigorous plant growth.
- Intervention effect The same low N fertilization rate did not always increase seed yields.
- Recommendation Higher N fertilization rates may be required on soils with lower amounts of mineralizable N.