Claim · model-written summary
Lower N/potassium and N/sodium ratios may be needed for all three Rhododendron groups.
- Taxon
- Rhododendron
Rhododendront0 - Outcome
- N/potassium (PJM, ER, AZ), N/sodium (PJM, ER, AZ)e0
- Direction
- lowere0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“lower ratios of N/potassium (PJM, ER, AZ), N/sodium (PJM, ER, AZ)”
t0“Rhododendron”
Title
Nutrient Uptake and Loss by Container-grown Deciduous and Evergreen Rhododendron Nursery Plants
Carolyn F. Scagel; Guihong Bi; Leslie H. Fuchigami; et al. HortScience 2011. doi:10.21273/hortsci.46.2.296
Other claims from this paper (13)
- Intervention effect Nitrogen application increased uptake rate of all nutrients in Rhododendron.
- Intervention effect Nitrogen application enhanced late-season uptake of many nutrients.
- Intervention effect Nitrogen application increased winter nutrient loss rate.
- Intervention effect N-fertilized plants often took up nutrients as late as November, while plants without added nitrogen usually ceased by September.
- Association Winter nutrient losses were not always associated with biomass loss.
- Association Rapid-growing plants were more capable of later-season nutrient uptake than slower-growing plants.
- Intervention effect Nitrogen availability altered nitrogen-to-other-nutrient uptake ratios.
- Recommendation Higher N/phosphorus fertilizer ratios may be needed for PJM and AZ Rhododendron.
- Recommendation Higher N/boron ratios may be needed for PJM and AZ Rhododendron.
- Recommendation Higher N/copper and N/iron ratios may be needed for PJM and ER Rhododendron.
- Recommendation Lower N/calcium, N/boron, N/manganese and N/zinc ratios may be needed in the named Rhododendron groups.
- Intervention effect Increasing nitrogen availability altered uptake efficiency, root absorption capacity, aboveground demand and nutrient use efficiency for several nutrients.
- Recommendation Nutrient management for Rhododendron should account for current demand and uptake supporting future growth and quality.