Claim · model-written summary
Late-season N did not alter soybean leaf N concentration two to three weeks after application.
- Taxon
- soybean
Glycine maxe1 - Organ / stage
- leaf samplese0
- Treatment
- N fertilizatione0
- Outcome
- Nitrogen concentrations in leaf samplese0
- Direction
- unaffectede0
- Qualifier
- 2 to 3 wk after N applicatione0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen concentrations in leaf samples taken 2 to 3 wk after N application were unaffected by N fertilization.”
e1“soybean [ Glycine max (L.) Merr.]”
Title
Effects of Late‐Season Nitrogen Fertilizer on Irrigated Soybean Yield And Composition
T. L. Wesley; R. E. Lamond; V. L. Martin; et al. jpa 1998. doi:10.2134/jpa1998.0331
Other claims from this paper (11)
- Intervention effect Late-season N significantly increased soybean yield at six of eight sites by an average 6.9 bu/acre or 11.8 %.
- Observation The two nonresponsive sites averaged under 50 bu/acre while responsive sites yielded at least 56 bu/acre.
- Observation Soybean plants were well nodulated at all locations.
- Intervention effect The 20 lb N/acre treatment produced positive responses in most cases.
- Intervention effect Late-season N increased grain protein concentration at some sites, but the combined effect was nonsignificant.
- Intervention effect Late-season N increased grain oil concentration at some sites, but the combined effect was nonsignificant.
- Observation Nitrogen sources performed similarly overall.
- Intervention effect UAN application resulted in leaf burn.
- Intervention effect At 40 lb N/acre, UAN yielded less than other N sources.
- Observation Economic evaluation found late-season supplemental N viable for high-yield-potential irrigated soybean.
- Recommendation The authors recommend 20 lb/acre late-season N at R3 for high-yield-potential irrigated soybean.