Produce Facts is a series of fact sheets published by the UC Postharvest Technology Research and Information Center summarizing the latest recommendations for maintaining postharvest quality of horticultural perishables.
The Postharvest Information Network is a resource for postharvest information on apples, pears, cherries, stone fruits and postharvest practices. They have a wealth of information, articles and links.
The University of Florida's Postharvest mission is to support Florida's diverse Postharvest horticulture industries through research, extension and teaching. Their goal is to generate and disseminate information so that perishable horticultural commodities are delivered to consumers fresh, safe, nutritious and in the form (e.g. ripe or fresh-cut) consumers desire.