Prediction of bitter pit in ‘Honeycrisp’ apples and best management implications

Tara Auxt Baugher, Richard Marini, James R. Schupp, Christopher B. Watkins

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

During a 3-year study of bitter pit in commercial ‘Honeycrisp’ apple (Malus 3domestica) orchards, incidence was associated with low calcium (Ca) levels in fruit peel; high ratios of nitrogen (N), potassium (K), and/or magnesium (Mg) to Ca in fruit peel; excessive terminal shoot length; and low crop load. Peel N and Mg concentrations were negatively correlated and peel Ca concentration positively correlated with crop density (CD). Shoot length (SL) was not consistently correlated with peel N, Mg, or phosphorus (P) and was negatively correlated with only Ca. A two-variable model that included SL and the ratio of N to Ca explained more than 65% of bitter pit incidence. The model has implications for best management of the cultivar in the field and during storage.

Original languageEnglish (US)
Pages (from-to)1368-1374
Number of pages7
JournalHortScience
Volume52
Issue number10
DOIs
StatePublished - Oct 2017

All Science Journal Classification (ASJC) codes

  • Horticulture

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