Most growers are in the midst of fruitworm and fungicide spraying. The week is looking to be either windy or pretty hot, so grab whatever spray window you can get. Altacor for fruitworm is a good choice and you should allow at least 7 days between applications, 10-14 is better....
Cranberry IPM Message
Bloom is finally moving towards mostly set! Altacor should be on your bog to manage cranberry fruitworm now! The second spray of Altacor must wait 7 days (label restriction) but it is better to space them 10-14 days apart...
It is time to being planning for your first Altacor application targeting Cranberry Fruitworm eggs. Even most large-fruited varieties have still not reached 50% out of bloom, but berries bigger than pinheads are easy...
If you are trying to control Fairy Ring, Ferbam can be applied at 9 lb/100 gal water through July 31. Do not apply after July 31. You can only do one application of Ferbam. This goes out as a soil drench at a rate of 1 gal/sq ft.
Sparganothis fruitworm moths and Cranberry fruitworm moths are flying. There are pictures on the IPM Message on the Cranberry Station web site. Picture #1 below shows a cranberry fruitworm moth resting on a pod waiting patiently for a cranberry to lay its egg on.
As you are getting ready for your first fungicide spray, please note that fungicide applications should have good coverage and take place before fruit rot fungi infect plant tissues.
Weevil has finally peaked out and Actara treatments are working well. Some Avaunt success has also been reported. Sparganothis and Black-headed fireworm should be wrapping up, but just like with the vine development, size is all over the place. ...
It is time to be thinking about fertilizer applications. The rate used will vary by cultivar, previous summer tissue tests and historic bog response.
Perhaps all the recent rain events and frost management have caused you to notice consistent waterlogged areas on the bog. Before applying any chemicals, improve drainage.
Aside from today (which looks to be wet and warm), the 5-day forecast is still looking cool (in the 50s for highs).
