Disease Tolerances

Beginning with the 2008 crop year, certified seed potatoes in Colorado will have only generations in the field listed. There are no more seed classes. This should allow buyers and sellers a better opportunity to evaluate seed lots and provide an easier approach to determining field generations. Listed below are the given disease tolerances into which Colorado certified seed will fit.

Percentages Allowed by Generation - Final Inspection

Item

Generation


G1 G2 G3 - G6
Potato Leafroll Virus 0 0.05 0.4
Spindle Tuber Viroid 0 0 0.1
Mosaic Viruses 0 0.1 2.0
Other Virus 0 0.05 0.5
Total Virus Allowed

2.4
       
Heywire 0.1 0.5 1.0
Giant Hill
0 0.5 0.5
Variety Mix 0 0.07 0.25
       
Bacterial Ring Rot 0 0 0
       
Blackleg 0 0.1 4.0
THE RULES AND REGULATIONS FOR COLORADO CERTIFIED SEED POTATOES,  AS INCORPORATED HEREIN, HAVE BEEN PROMULGATED BY THE BOARD OF GOVERNORS OF THE CSU SYSTEM PURSUANT TO LEGISLATION ENACTED BY THE COLORADO GENERAL ASSEMBLY, AS INCORPORATED IN SESSION LAWS, 1929, CHAPTER 59, PAGE 188, AND SESSION LAWS, 1933, CHAPTER 25, PAGE 173. SINCE THE USE, CROP, YIELDS, OR QUALITY OF CERTIFIED SEED POTATOES IS BEYOND THE CONTROL OF THE PRODUCER, THE SELLER, THE INSPECTOR, THE COLORADO POTATO GROWERS’ ASSN., INC. OR THE BOARD OF GOVERNORS OF THE CSU SYSTEM, NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, WHICH EXTENDS BEYOND THE DESCRIPTION ON TAG OR BULK CERTIFICATE IS MADE CONCERNING THE PERFORMANCE OR QUALITY OF THESE SEED POTATOES. BY ACCEPTANCE OF THESE SEED POTATOES, BUYER EXPRESSLY AGREES THAT ITS EXCLUSIVE REMEDY FOR BREACH OF ANY WARRANTY SHALL BE LIMITED IN ALL EVENTS TO A RETURN OF THE PURCHASE PRICE OF THE SEED. 
“By law and purpose, the Colorado State University Cooperative Extension Service is dedicated to serve all people on an equal and nondiscriminatory basis.”