Claim · model-written summary
Banding AA or urea raised band pH from 6 to 8.5 within a day.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- banding AA or urea at sowinge0
- Outcome
- pHwater in the bandse0
- Direction
- rosee0
- Value
- 6 to 8.5e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Within 1 day of banding AA or urea at sowing, pHwater in the bands rose from 6 to 8.5”
Title
Effects of banded ammonia and urea fertiliser on soil properties and the growth and yield of wheat
J. F. Angus; V. V. S. R. Gupta; G. D. Pitson; et al. Crop and Pasture Science 2014. doi:10.1071/cp13337
Other claims from this paper (17)
- Intervention effect Nitrogen yield responses were small or negative under drought.
- Intervention effect Nitrogen yield responses reached 17 kg grain per kg nitrogen fertilizer in favorable seasons.
- Intervention effect AA and urea did not consistently differ in yield.
- Intervention effect AA and urea did not consistently differ in grain protein.
- Intervention effect AA and urea did not consistently differ in fertilizer N recovery efficiency.
- Intervention effect Banding depth did not consistently alter fertilizer outcomes.
- Intervention effect Application time did not consistently alter fertilizer outcomes.
- Observation Ammonia loss was negligible from soil-applied urea granules or AA.
- Observation AA bands initially had soil ammonium above 700 micrograms N per gram.
- Observation Soil ammonium in AA bands halved within five weeks due to nitrification.
- Observation Immediately after banding, microbial biomass carbon and protozoa numbers fell about half.
- Observation Immediately after banding, ammonia and nitrite oxidizers were unchanged.
- Observation Five weeks later microbial biomass carbon and protozoa partly recovered.
- Observation Five weeks later ammonia and nitrite oxidizers increased 5–10 fold.
- Observation Microbial diversity in bands was slightly reduced after seven months.
- Intervention effect Concentrated fertilizer bands slowed seedling growth relative to mixed fertilizer.
- Mechanism The authors concluded banding gave wheat slow-release nitrogen and reduced excessive seedling growth and haying-off risk.