Extension Volunteers Trial NC State Disease-Resistant Tomato Varieties

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Tomato harvest

Local EMG program coordinator Krys Ochota shows off the first harvest from the test plot at the N.C. Cooperative Extension, Brunswick County Center.

Tomatoes are one of our most popular vegetables and the pride of many gardeners’ summer vegetable patch. As many of us have discovered, pests and diseases can make growing a bountiful tomato crop in North Carolina challenging. To help identify tomato varieties that are less problem-prone, NC State Extension Master Gardener℠ volunteers are trialing three new disease-resistant varieties developed by NC State plant breeders. 

The tomato varieties under evaluation were bred and selected by NC State Fresh Market Tomato Breeding Program team members Dilip Panthee, Reza Shekasteband, and Randolph Gardener. They are: 

  • ‘Mountain Regina’ – A variety with an indeterminate growth habit that bears large, red fruit.
  • ‘Mountain Heritage’ – Another indeterminate variety that produces large, pink fruit similar in shape to those borne by ‘Cherokee Purple.’
  • ‘NC1012’ – A determinate variety with large red fruit.

Also included in the trial is ‘Cherokee Purple,’ an heirloom variety with indeterminate growth and large, purple fruit. As with many heirloom varieties, ‘Cherokee Purple’ has little disease resistance and is grown mainly for its superior flavor. The performance and taste of the new disease-resistant varieties will be compared to this long-time favorite.

The trial, which evaluates varieties based on yield, harvest window, pest and disease tolerance, taste, and appearance, was designed by Matt Jones, N.C. Cooperative Extension horticulture agent in Chatham County, and Inga Meadows, NC State Extension Specialist for vegetable and herbaceous ornamental plant pathology. The ultimate goal is to determine which varieties are the tastiest, most productive, and best suited for growing in home and community gardens. 

Master gardener volunteers inspect tomato plants for insect and disease issues.

Master Gardener volunteer interns Ronnie Abbott and Jen Williams monitor tomato plants for disease symptoms at the Brunswick County Center (left). Rob Bergmueller, Master Gardener volunteer in Chatham County, inspects a developing fruit (right).

A successful pilot held this summer evaluated the trial protocols and procedures. The pilot engaged Extension Master Gardener volunteers in Chatham and Brunswick County, who grew the varieties in test plots at their local Extension center or in their own yards.

Thanks to funding provided by NC State Extension administration through the Horticulture Working Groups, the trial will expand next year to include more sites and involve volunteers in additional counties. Following the 2024 growing season, Extension experts will analyze the data and determine which varieties were considered the tastiest and best performers. Stay tuned for recommendations!

Extension Master Gardener volunteers work with Extension professionals across North Carolina to grow knowledge and promote sustainable gardening practices by

  • participating in citizen science and research projects,
  • providing research-based information,
  • and offering educational programming and community outreach.

Other research projects they have participated in include a basil variety trial and an ongoing project investigating how to improve pollinator habitat in residential landscapes.

Learn more about how you can support or be part of the NC State Extension Master Gardener program!

Learn. Grow, Share tagline

Written By

Regina Kaiser, N.C. Cooperative ExtensionRegina KaiserProgram Assistant, Extension Master Gardener Program Email Regina Horticultural Science
NC State Extension, NC State University

Contributing Author

Charlotte Glen, N.C. Cooperative ExtensionCharlotte Glen, Ed.D.NC State Extension Master Gardener℠ Program Manager Call Charlotte Email Charlotte Horticultural Science
NC State Extension, NC State University
Updated on Sep 29, 2023
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