The use of carfentrazone (Shark) has recently become popular for suppression of primocanes in raspberry. It is a good option for growers because it is substantially less expensive than the standard hand pruning and also a lot safer and more effective than gramoxone (Paraquat).
The Annual UC Strawberry (Pomology) Field Day will be held Tuesday, May 5 at the UC Watsonville Strawberry Research Facility on Dairy Rd.
Please following the link below for the agenda and more information regarding this meeting:
Please be aware that the Monterey Bay Academy Field Day will take place this coming June 19. Click the link below to access the agenda:
Don't miss this one!
Lately there has been some concern about leafrollers in raspberries, so it is important first for growers to know how to identify what a leafroller looks like in order to make correct pest management decisions.
Leafrollers are generally true to their name, meaning they will roll leaves up to form a shelter with a whitish webbing. They will also form shelters between several leaves, growing points of plants, developing flowers and fruit. This is a sure way to distinguish leafroller larvae from other larval pests in the caneberry field.
The leafroller larvae themselves in raspberries are green in color and will move about vigorously (if healthy) when disturbed. This compares to other larval pests found in caneberries which are either sluggish to respond or a distinct method of movement, such as the looper described below.
It is important to note that it is almost impossible to distinguish leafroller species from one another in the field. Generally, identification of leafrollers needs to be done under a microscope or through DNA analysis, and indeed this has been the case lately with light brown apple moth.