Journal
SCIENTIA HORTICULTURAE
Volume 246, Issue -, Pages 123-128Publisher
ELSEVIER
DOI: 10.1016/j.scienta.2018.10.067
Keywords
Prunus avium; Calcium; Gibberellic acid; Quality; Postharvest disorders
Categories
Funding
- Columbia Gorge Fruit Growers Commission
- Oregon Sweet Cherry Commission
- Washington Tree Fruit Research Commission
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Six Ca(NO3)(2) sprays at 0.3% and 0.6% from pit hardening (PH) to 1 week before harvest (1WBH) most effectively increased Ca uptake in sweet cherry (Prunus avium). Low concentration (< 0.3%) did not affect the absorption of Ca; high concentration (> 1.6%) caused burning of leaf margins. Fruit treated with Ca had greater fruit firmness (FF), soluble solids content (SSC) and titratable acidity (TA) and fewer disorders than untreated fruit while retaining marketable color and size. A single, low concentration of GA(3) combined with Ca sprays enhanced Ca uptake, cracking resistance, and FF without delaying maturation. When Ca plus GA(3) sprays were reduced to four times, Ca uptake was retarded, but had an equal or greater benefit than Ca sprays alone. The 5-d harvest delay in combination-treated fruit did not affect skin color, but these fruit had reduced Ca levels at harvest and displayed stem browning after storage.
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