Crop Load Management
Mario Miranda Sazo, Cultural Practices
Lake Ontario Fruit Program
Crop load management is the single most important yet difficult management strategy that determines the annual profitability of apple orchards. The number of fruit that remain on a tree directly affects yield, fruit size and the quality of fruit that are harvested, which largely determine crop value. If thinning is inadequate and too many fruits remain on the tree, fruit size will be small, fruit quality will be poor and flower bud initiation for the following yearââ¬â¢s crop may be either reduced or eliminated. Consequently, poor or inadequate thinning will reduce profitability in the current year and result in inadequate return bloom in the following year. Over thinning also carries economic perils since yield and crop value the year of application will be reduced and fruit size will be excessively large with reduced fruit quality due to reduced flesh firmness, reduced color and a much-reduced postharvest life. Thus, management of crop load is a balancing act between reducing crop load (yield) sufficiently to achieve optimum fruit size and adequate return bloom without reducing yield excessively.
Apples
Apricots
Asian Pears
Blueberries
Cherries
Currants
Gooseberries
Nectarines
Peaches
Pears
Plums
Raspberries / Blackberries
Strawberries
Unusual Fruit
Upcoming Events
2026 Tree Fruit & Small Fruit Twilight Meetings
April 30, 2026 : Tree Fruit & Small Fruit Twilight Meeting 1
Webster, NY
The Twilight Meetings are a series of monthly meetings, where we examine seasonal changes in tree fruit and berry crop phenology, discuss and demonstrate scouting and monitoring for insects and diseases, and provide integrated pest management solutions to maximize the health and productivity of berry and tree fruit plantings.
Please arrive at 6pm for pizza and soda. This year Twilight meetings will begin and end 30minutes earlier than last year!
May 28, 2026 : Tree Fruit & Small Fruit Twilight Meeting 2
Oswego, NY
The Twilight Meetings are a series of monthly meetings, where we examine seasonal changes in tree fruit and berry crop phenology, discuss and demonstrate scouting and monitoring for insects and diseases, and provide integrated pest management solutions to maximize the health and productivity of berry and tree fruit plantings.
Please arrive at 6pm for pizza and soda. This year Twilight meetings will begin and end 30minutes earlier than last year!
June 25, 2026 : Tree Fruit & Small Fruit Twilight Meeting 3
Medina, NY
The Twilight Meetings are a series of monthly meetings, where we examine seasonal changes in tree fruit and berry crop phenology, discuss and demonstrate scouting and monitoring for insects and diseases, and provide integrated pest management solutions to maximize the health and productivity of berry and tree fruit plantings.
Please arrive at 6pm for pizza and soda. This year Twilight meetings will begin and end 30minutes earlier than last year!
2026 Virtual Orchard Meetup Series
February 27, 2026 : Session 1 - The Impacts of Weather on Pome Fruit Quality and Storability: Lessons Learned
The Impacts of Weather on Pome Fruit Quality and Storability: Lessons from 2025 - The first meetup will be conducted live on Friday, February 27, 2026, at 10:30pm (PST)/1:30pm (EST). The webinar will last 90 minutes. The format will include brief presentations by two SPARC scientists, followed by a packer/grower panel of industry leaders across North America. The meetup will conclude with an open discussion in a very inclusive virtual format. Viewers are invited to share solutions, ask questions, and interact with scientists and panelists. The program is free of charge.
June 11, 2026 : Session 2
Details to follow.
June 18, 2026
Details to follow.
June 25, 2026 : Session 4
Details to follow.
Cornell Fruit Field Day
July 30, 2026
Geneva, NY
Join Cornell researchers in Geneva for Fruit Field Day, returning after 10 years, to tour research plots, learn from experts—including Dr. Terence Robinson with 40+ years in tree fruit research—and explore the latest orchard technologies and practices.