Claim · model-written summary
Seed placed urea stunted wheat shoots and root radicles.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Seed‐placed ureae0
- Outcome
- wheat shoot and root radiclese0
- Direction
- stuntede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed‐placed urea stunted wheat shoot and root radicles, while slow‐release urea reduced these symptoms.”
Title
Ammonia/Ammonium Toxicity Root Symptoms Induced by Inorganic and Organic Fertilizers and Placement
William L. Pan; Isaac J. Madsen; Ronald P. Bolton; et al. Agronomy Journal 2016. doi:10.2134/agronj2016.02.0122
Other claims from this paper (11)
- Observation Canola roots exhibited apex and root hair die-back, discoloration, and accelerated lateral rooting.
- Intervention effect Slow release urea reduced the wheat stunting symptoms.
- Observation Deep fertilizer zones damaged primary root axes of wheat, canola, and faba.
- Mechanism Wheat seedling survival was greater as multiple seminal axes and lateral roots grew away from fertilizer.
- Mechanism Damage to canola taproots often caused seedling mortality.
- Mechanism Damage to faba taproots often caused seedling mortality.
- Observation Urea developed an expanded ammonia toxicity zone of 1.5 to 5 cm.
- Observation Chicken manure developed an expanded ammonia toxicity zone of 1.5 to 5 cm.
- Observation Canola taproot elongation stopped within three days, followed by necrosis and shrinking of root axis and hairs.
- Mechanism Elevated pH above chicken manure suggested upward ammonia transport with increased ammonium.
- Recommendation Ammonia toxicity and root architecture should be considered when selecting nitrogen placement and source.