Evaluation location: Colorado, United States
The 1998 Rhizoctonia epidemic started strong and progressed quickly, becoming severe by mid August. We had to irrigate the beets up and had a period of cold temperature with just a little rain in the week after planting. Therefore, stands were poor, and, in some instances, we lost plotsto lack of germination and crusting. Differences in DI's among entries in all tests were highly significant (P < 0.0001). Mean DI's across all tests for highly resistant FC705-1, resistant FC703,and highly susceptible FC901 controls were 4.4, 3.4, and 5.7, respectively. The highest and lowest DI's for contributor lines were 7.0 and 3.5, respectively. Data was taken on a 0-7 scale and adjusted to the 0-9 scale by multipling by 1.2857.