TY - JOUR
T1 - Prediction of bitter pit in ‘Honeycrisp’ apples and best management implications
AU - Baugher, Tara Auxt
AU - Marini, Richard
AU - Schupp, James R.
AU - Watkins, Christopher B.
N1 - Funding Information:
Received for publication 10 July 2017. Accepted for publication 21 Aug. 2017. This research was supported by the State Horticultural Association of Pennsylvania, the Pennsylvania Apple Program, and the Pennsylvania Department of Agriculture Research Program. We acknowledge the valuable contributions of Tom Jarvinen, Michael Basedow, Erin Dugan, Kristi Kraft, Danielle Ryan, Montserrat Fonseca Estrada, Alana Anderson, Ryan Hilton, Sladjana Prozo, and Gustavo Salazar (Penn State Extension); Tom Kon, Edwin Winzeler, and Melanie Schupp (Penn State Fruit Research and Extension Center); Dave and Jim Benner, Clint and Bill Lory, Ben and Joe Lerew, Chris Baugher, and Dave and John Wenk (grower cooperators); Lee Showalter, Leighton Rice, David Rice, Ben Rice (Rice Fruit Company); Ryan Hess (Hess Brothers Fruit Company); John Spargo, and Denyce R. Matlin (Penn State Agricultural Analytical Services Laboratory); and Jacqueline F. Nock and Yosef Al Shoffe (Cornell Apple Postharvest Physiology Laboratory). The mention of a trademark, proprietary product, or vendor does not constitute a guarantee or warranty of the product and does not imply its approval to the exclusion of other products or vendors that also may be suitable. 1Corresponding author. E-mail: tab36@psu.edu.
Publisher Copyright:
© 2017, American Society for Horticultural Science. All rights reserved.
PY - 2017/10
Y1 - 2017/10
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85033586177&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85033586177&partnerID=8YFLogxK
U2 - 10.21273/HORTSCI12266-17
DO - 10.21273/HORTSCI12266-17
M3 - Article
AN - SCOPUS:85033586177
VL - 52
SP - 1368
EP - 1374
JO - Hortscience: A Publication of the American Society for Hortcultural Science
JF - Hortscience: A Publication of the American Society for Hortcultural Science
SN - 0018-5345
IS - 10
ER -