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Colorado State University (CSU) is recognized as one of the premier research institutions and routinely ranks in the top of all American Universities in research expenditures.

CSS Farms is a diversified producer of vegetable crops as well as row crops and small grains with operations across the United States.

The Colorado City greenhouse produces several million minitubers each year. A state-of-the-art greenhouse, tissue culture laboratory, and five climate control cold storages allow us to fill custom orders of any size for field planting any time of the year.

Daniel J. Corey Farms grow 880 acres of high-quality, high-yielding seed potatoes. This is in addition to Seed Pro acres. Seed Pro Inc. is located in Maine state of the USA.

Diagnosticos Vegetales specialized in providing diagnostic services for plant diseases and sanitary management of potato crops, as well as in the production of seed potato minitubers.

Diagnosticos Vegetales S.A. is a leading independent provider of services and products focused on plant biotechnology for the breeding of seed potatoes and other crops.

Pure Potato is a Limited Generation Seed Farm producing disease free seed potato stock since 1987. This process starts under a microscope in the lab.

G & G Farms is a family operation with a long-standing commitment to quality, service, and integrity.

Martinez Farms raises certified seed potatoes in the San Luis Valley at an elevation of 7,683 (2342 m.) above sea level, in the southern part of the state of Colorado in the United States.

Michael Family Farms is a 4th generation family potato business, located in the Ohio Central Valley. Starting in the 1950s, Michael and Sons grew only round White varieties and sold them seasonally.

The mission of the Montana State University (MSU) Seed Potato Certification Program is to certify Montana grown seed potatoes and conduct research to improve potato quality and testing methods.

The Oregon State University (OSU) and its extension service devote a significant amount of effort to potato research, in areas such as variety development, Crop Management, Weed Control, Disease Control and Insect Control.

Parkinson Foundation Seed Farm was created out of a demand for clean potato seed.

The Potato Variety Management Institute (PVMI) was established in 2005 by the the state potato commissions of Washington, Oregon, and Idaho to handle the licensing and royalty collection on Tri-State potato varieties.

Rustikas.Uy is a company in Uruguay specialized in the aeroponic production of mini-tubers of virus-resistant potato varieties. The company operates a laboratory for the production of virus-free potato seedlings.

Semillas S.Z., a company with Chilean and Dutch capitals, has more than 40 years of experience in the production of high-quality, certified seed potatoes. They work exclusively in Chile with the genetics and varieties of HZPC

Summit Plant Laboratories, Inc. is a large-scale, wholesale specialty micropropagation (clean-stocks) and seed health testing business.

SunRain Potato Varieties is supplier of seed potatoes, able to offer over a hundred different varieties