Michigan Cercospora Nursery

Nursery Trials

Michigan Cercospora Nursery

May10Nursery planted
May15All spreader rows were planted
May23Good emergence
June1Scheduled to be thinned early next week, micro rate herbicides were applied to the conventional beets on May 31 and glyphosate was applied to glyphosate resistant beets June 1.https://www.bsdf-assbt.org/wp-content/uploads/2017/02/Cercos6.1.jpg
June9Sprayed micro rate herbicides on conventional beets June 5. Beets are being thinned today.
June16S-Metolachlor was applied on June 13. Microrate herbicides were applied to conventional beets on June 14.
June23Glyphosate was applied to glyphosate resistant beets on June 21st. The irrigator was set up and prepared.
July6Inoculated on July 5
July13Irrigated 0.1” on 7/6 and 7/7, rain totaling 0.21” on 7/10, and scheduled to be irrigated 0.1” on 7/13.https://www.bsdf-assbt.org/wp-content/uploads/2017/07/Cercos7.13.jpg
July20Irrigated 0.1” on July 17
July20We have started to find Cercospora leaf spot in the nursery. It is not yet severe enough to start rating, but is developing
July27Cercospora leaf spot is really starting to show up in the nursery. This week we had some plots that were up to a “2” rating, so we will be starting the official rating next week. If anyone wants to visit the nursery, I would suggest early August should be a good time to see the disease progress.
August18At the second rating of the East Lansing Cercospora leaf spot nursery, commercial entries ranged from a rating of a low of 2 (isolated spots common on leaves) to 5. The evening temperatures have cooled off, so disease progression has slowed.