Michigan Cercospora Nursery 2022 - Beet Sugar Development Foundation

MIBST School 2025 Dates: Beet End 6/3-6/13/2025 * Sugar End 7/15-7/25/2025 * Ag School 6/23-6/27/2025 * Engineer School - TBD

Michigan Cercospora Nursery 2022

April29	The cercospora nursery was planted on 4/29.
May19	We've had some timely rain and the beets are emerging.
June6	The beets were thinned and are doing well.
June24	The beets are growing well and maturing. It rained 0.4" on 6/20 and has been warm and sunny since then.
July7	Most of the field is doing well. There is a small section that seems to be in a sand knoll and is a little behind. It's been a little dry lately, and some rain would be helpful.
July13	The nursery was inoculated.
July28	Disease is developing, and we are starting to see some spots on the beets.
August12	The Cercospora nursery was rated for the first time this year. Ratings were between 1 and 4.
August19	We did the second rating of the nursery this week. The disease had increased. The ratings ranged from 1 to a single plot that head reached a rating of 6 (0-10 scale where 0 = no spots and 10 = complete defoliation). The majority of plots ranged between 3 and 4, with highly resistant materials still rating primarily as 1s. We will send some pictures next week.
August25	We rated the cercospora nursery. Ratings were between 1 and 7 with most between 3 and 5. The weather seems to be cooling off a little, and we expect the peak of the disease to happen in the next week or so.
September1	We rated the cercospora nursery. Ratings were between 1 and 8 and most ratings were between 5 and 6.
September8	We rated the cercospora nursery. Ratings were between 2 and 8, and most were at 6.
September15	Ratings for the cercospora nursery were between 2 and 8. Most ratings were around 6. We are starting to see a lot of regrowth, so this will be our last rating.