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eJournal on production and pest management practices for strawberries and vegetables
strawberry fields forever
Comments:
by Mark Bolda
on May 4, 2017 at 8:13 AM
Hey boss, can you fill us in a bit more on the pherocon deal for this fly? I haven't tried it, but if it is more efficacious on trapping than yeast sugar water or apple cider vinegar, I'd be very interested in knowing that.
by Surendra K. Dara
on May 4, 2017 at 8:30 AM
Hi Mark,  
 
I haven't tested the recent one, but an earlier version worked well. Apple cider vinegar and yeast-sugar solution also work, but there are several reports with conflicting results on which one is more attractive. Type of the trap could also contribute to this variation.  
 
Thank you,  
Surendra
by Mark Bolda
on May 4, 2017 at 8:39 AM
Ok thanks Surendra. Not to get deeper into the weeds than need be, but we found in work with Hamby, Sheehan and Zalom that the apple cider vinegar worked better than yeast sugar water in the winter, while the converse was true in the summer.  
Definitely agree that trap type is going to contribute to the variation, so we'd have to control for that in a study.  
If you do happen into those pherocon deals, maybe send some up to me for a side by side with our traditional trapping media.  
Thanks for putting this out - I read your blogs pretty closely.  
Mark
Reply by Surendra K. Dara
on May 24, 2017 at 11:12 AM
Hi Mark,  
 
I just read about a new lure formulation for SWD. You might be interested to see.  
https://entomologytoday.org/2017/05/24/new-formula-doubles-performance-of-spotted-wing-drosophila-lure/
by Surendra K. Dara
on May 4, 2017 at 4:29 PM
Yes, Mark! It all depends on the crops, attractant mixes, traps and so on. That is why I did not make specific recommendations, but provided available options.  
 
Thank you for asking these questions as it will add clarity.  
 
Surendra
by Mark Bolda
on May 25, 2017 at 2:35 PM
Thanks Surendra for the lead on the lure. Good article, but I'd like to see their reformulated trap solution tested against what we are currently using. Since they realized better results over their previous solution by raising the amount (among other things) of acetic acid that has me wondering if it would be able to best our "apple cider vinegar" solution, which after all is really, really high in acetic acid.  
Let me know if you get some of these trap solutions, I'd like to try them out.  
Thanks for the lead.
Reply by Surendra K. Dara
on June 20, 2017 at 12:55 PM
Mark,  
 
Wanted to share a new article about SWD baits and their efficacy. Please check https://entomologytoday.org/2017/06/20/designing-effective-baits-for-spotted-wing-drosophila-is-no-easy-task/
by Mark Bolda
on June 22, 2017 at 11:44 AM
Thanks Surendra, this is a good article. The only comment I would have is that wine is actually a tricky ingredient to work with because of the rather puritanical regulations concerning its transport in the USA - ie "open container laws". Since mixing generally takes place back at the ranch, one would be careful on where this is carried, not to mention could not have minors work with it.  
 
This reminds me of when we had an employee handling large amounts of "port wine" for live trapping of LBAM. He was using cases and cases of the stuff, and would dutifully deposit all the bottles in the recycling bin at the county yard. Well, that caused a bit of a stir, since people were thinking that all this stuff was being consumed every day by our guy out there by the shed. We ended up having some explaining to do.  
 
Ethyl alcohol as an ingredient seems to always have ancillary issues with it!  
 
At any rate, it's good to know that there is a better trap to be had for SWD. Thanks for thinking of me.
 
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