Tips for produce storage

potatoes with eyes4This is the time of year we begin to get calls from folks that worked hard all summer raising vegetables. After harvest and a few months of storage, some crops begin to deteriorate. Potatoes grow eyes, onions sprout, and acorn squash turn orange.

If these problems are happening in your home, we have great information from Richard Jauron at the Hortline.

Sprouting potatoes can be caused by storing at temperatures above 50°F. Potatoes prefer storage in cooler temperatures; but not in the refrigerator. Storage in the refrigerator can begin to turn the potato starch into sugar. Also, storing potatoes near fruit can cause sprouting as potatoes are affected by the ethylene gas produced by ripe fruit.

Sprouting or rotting onions can also be caused by storage at temperatures above 50°F. If the bulbs are kept in a damp area or stored with poor air circulation they are prone to rotting. The main determining factor in storage life of onions is the variety or cultivar of onion that you plant. For best storage life, choose varieties such as Dopra, Stuttgarter, and Red Zeppelin. If these onions are harvested when the tops begin to fall over and are cured in a warm, dry well ventilated location they should keep well.

Yellowing of acorn squash is also due to improper storage conditions. They should be stored between 50°F and 55°F. Storage above these temperatures can also cause the flesh to become stringy.

Liz Meimann

I received both my undergraduate and graduate degrees in Food Science at Iowa State University. I love to quilt, sew, cook, and bake. I spent many years gardening, canning, and preserving food for my family when my children were at home.

More Posts - Website

Leave a Reply

Your email address will not be published. Required fields are marked *

AnswerLine

Connect with us!

AnswerLine's Facebook page AnswerLine's Pinterest page
Email: answer@iastate.edu
Phone: (Monday-Friday, 9 am-noon; 1-4 pm)
1-800-262-3804 (in Iowa)
1-800-854-1678 (in Minnesota)

Archives

Categories