Honeycrisp in Ontario
Use semi-dwarfing rootstocks such as M26, M.9 RN29, and MM.106.
Retain may be used to prevent preharvest fruit drop. Thin fruit using NAA with or without Sevin to 6 fruit per square centimeter trunk area measured 15-20 cm above the graft union (Schupp et al., 2001).
Honeycrisp is susceptible to blue mold, black rot, powdery mildew, and cedar apple rust (Rosenberger, 2003).To prevent bitter pit, use calcium sprays and avoid excessive nitrogen fertilization.
Harvest when starch index is above 5, firmness is between 15 and 17 pounds, and soluble solids content is near 15% (Cline and Gardner, 2005).
Use delayed cooling of 10C (50F) for 5-7 days prior to long-term storage.
Soft scald and soggy breakdown are commonly observed in Ontario-grown Honeycrisp, so store fruit at 3-4 C. Limited success has been found using 2.5% oxygen and less than 2% carbon dioxide at 3 - 4 C.
SmartFresh has little effect on firmness, but reduces ethylene production and the development of greasiness. Honeycrisp treated with SmartFresh also usually have higher acidity and soluble solids content.
- Moran, R, J DeEll, and D Murr. 2010. Effects of preconditioning and fruit maturity on the occurrence of soft scald and soggy breakdown in 'Honeycrisp' apples. HortScience 45:1719-1722.
- DeEll, J. 2010. Smartfresh (1-MCP) and storage of Honeycrisp apples. Compact Tree Fruit 43:20-23.
- DeEll, JR and B Ehsani-Moghaddam. 2010. Preharvest 1-Methylcyclopropene treatment reduces soft scald in ‘Honeycrisp’ apples during storage. HortScience 45:414-417.
- Moran, RE, JR DeEll, and W Halteman. 2009. Effects of preharvest precipitation, air temperature, and humidity on the occurrence of soft scald in ‘Honeycrisp’ apples. HortScience 44:1645-1647.
- Cline, J. Commercial Production of Honeycrisp Apples in Ontario. Ministry of Agriculture, Food and Rural Affairs. Factsheet ISSN 1198-712X. http://www.omafra.gov.on.ca/english/crops/facts/05-047.htm
- DeEll, J. 2005. Postharvest quality of 'Honeycrisp' apples. In: Proceedings from the 21st Annual Tree Fruit Postharvest Conference, in conjunction with the 101st Annual Washington State Horticultural Association Meeting, pp. 1662-163. http://postharvest.tfrec.wsu.edu/PC2005C.pdf
Jennifer R. DeEll, Ph.D.
Fresh Market Quality Program Lead
Agriculture Development Branch
Ontario Ministry of Agriculture, Food and Rural Affairs
1283 Blueline Rd. at Hwy #3, Box 587
Simcoe, ON N3Y 4N5