Today’s themes: The difference between tree phenology and insect/disease biology — on scab and arthropods
- Overall message of today’s call: We can’t base our pest predictions on the stage of tree growth alone; we have to take the weather into account.
- (04:45) Apple scab: We’re probably further along in ascospore than we’d assume from degree day model. We may have already had a couple of cycles. If you see any lesions, be sure to keep coverage interval close.
- (13:00) Black rot: Either already started or close to starting.
- (16:10) On Serenade: Effectiveness, conflicts with lime sulfur.
- (18:25) On lime sulfur application and pollinators
- (19:45) On EBDC and eradicants against scab
- (21:35) Fire blight: Risk has probably passed, unless you get hail or wind damage
- (24:00) Insects: Some of the insects are further along than the trees are, because of the strange weather.
- (26:05) Thrips: eastern flower thrips vs. western flower thrips, and their threat to apples and small fruit
- (29:25) Rosy apple aphids: Time to scout for them, as they should be easy to spot by the curled leaves.
- (31:30) White apple leaf hoppers
- (32:55) Question: What kind of threshold do we have for white apple leaf hoppers and rosy apple aphids?
- (37:45) Lepidoptera: Spotted tentiform leafminer, Red-banded leaf roller, Oblique-banded leaf roller, Green fruit worm
- (39:50) Question: How do you differentiate Oblique-banded, Red-banded, and Green fruit worm?
- (45:10) Plum curculio: Unlikely that it’s made it deep into the orchard, and would recommend a perimeter spray.
- (51:10) Question: How useful are Plum curculio traps?
- Dial: (760) 569-7699, then enter this access code: 272044.
- Dial: 641-715-3800, then enter this access code: 28864 (this number has not changed).
Download the May 24 recording here:
Get the MP3 version.
AN IMPORTANT UPDATE: This week was the first week we used the new conference call service. Thanks to everyone who participated in the calls for making the transition smooth and easy!
On free Skype calling: Remember that with this new service, you can use Skype to call in to the live call for free. It looked like we had one, or at most two, people taking advantage of the free Skype-to-Skype feature today. Please see the previous announcement emails for information about how to set this up.
A couple other people had some problems with the setup, however. They added the FreeConferenceCallHD.7605697676 contact but the contact remained offline or unavailable. If you add the contact and it says it’s offline, just go ahead and try to call it anyway by right clicking on the contact and clicking “Call.”
If you like to try setting up Skype before next week’s call, please feel free to test out your setup by dialing the conference call service at any time during the week. Also, if you run into any problems getting it to work or have any questions about Skype, please contact me at or 541-207-6535 (my cell) so we can figure it out together.
Call playback: Please note that the playback phone number has changed as of May 24, 2011. As of right now, it is not possible to play back an old recording for free using a Skype-to-Skype connection. To hear the most recent call, please dial the following regular phone number:
Call archives:
*REMINDER: If you join the live calls, please mute your line by pressing *6 to avoid unwanted feedback. If you want to ask a question or make a comment, you can unmute your line by pressing *6 again. Thanks!
Next call will be on Tuesday, May 31 at 8am Central Time! Please remember that we have begun using the new call-in number (that is 760-569-7676, access code 272044). If you have any apple-related questions, send them to John at (or, if you can’t email, call at 608-604-0234) by Monday.
