Claim · model-written summary
Calcium or magnesium treatments increased leaf area index relative to controls, significantly on Swingle rootstocks.
- Taxon
- treese0
- Material
- Swinglee0
- Treatment
- Ca and/or Mg treatmentse0
- Outcome
- leaf area index (LAI)e0
- Direction
- lowere0
- Comparator
- Control treese0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Verbatim
e0“Control trees had a lower leaf area index (LAI) than those that received either Ca and/or Mg treatments, and the impact was significant on Swingle, rather than on Cleopatra, rootstocks”
Title
Alisheikh A. Atta; Kelly T. Morgan; Mark A. Ritenour; et al. HortScience 2025. doi:10.21273/hortsci18837-25
Other claims from this paper (11)
- Observation Soil ammonium nitrogen accumulated in an oscillating spring-summer pattern on both rootstocks.
- Observation Soil nitrate nitrogen accumulated persistently on both rootstocks, then stabilized near 4.0 mg·kg −1.
- Intervention effect Swingle-rootstock trees responded more to macronutrients than Cleopatra-rootstock trees.
- Observation Leaf manganese and zinc concentrations were within the lowest ranges.
- Recommendation The authors recommend supplementary manganese and zinc for HLB-affected Hamlin trees.
- Observation Cleopatra-rootstock trees had greater canopy volume than Swingle-rootstock trees.
- Observation Secondary macronutrient effects manifested only after the third study year.
- Intervention effect Combined calcium and magnesium increased fruit yield 1.8-times versus controls.
- Intervention effect Magnesium treatment produced greater total soluble solids.
- Intervention effect Combined calcium and magnesium produced greater total soluble solids.
- Recommendation The authors recommend nutrient management as an immediate HLB mitigation measure.