Claim · model-written summary
Ammonium at pH 4 gave better growth than at pH 8.
- Taxon
- Brachiaria brizantha
Urochloa brizanthae1 - Treatment
- ammoniume0
- Outcome
- growth and performancee0
- Direction
- bettere0
- Qualifier
- pH = 4e0
- Comparator
- pH = 8e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants in ammonium or ammonium nitrate at pH = 4 had better growth and performance, followed by pH = 6, compared to plants grown at pH = 8 (buffered with calcium carbonate)”
t0“Palisadegrass plants”
e1“Brachiaria brizantha cv. MG5”
Title
Influence of N-forms and changes in nutrient solution pH on growth of Palisadegrass plants
Mohammad Kazem Souri Journal of Plant Nutrition 2022. doi:10.1080/01904167.2022.2027982
Other claims from this paper (8)
- Intervention effect Ammonium nitrate at pH 4 gave better growth than at pH 8.
- Intervention effect Calcium carbonate at pH 8 significantly reduced growth, especially root growth.
- Intervention effect Carbonate had a stronger adverse effect at high than low pH.
- Mechanism High carbonate with ammonium was toxic, possibly because of ammonia.
- Observation Plants grew normally under different nitrogen forms in hydroponics independent of pH.
- Intervention effect Without pH control, nitrogen forms did not significantly change root and shoot biomass.
- Intervention effect Without pH control, nitrogen forms did not significantly change leaf SPAD or protein concentration.
- Mechanism The authors identified carbonate as the growth inhibitor.