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UCANR electronic extension journal previously published as "Strawberries and Vegetables"
strawberry fields forever
by Mark Bolda
on December 17, 2021 at 8:14 AM
Great article as always Surendra. Super thorough on the pest and than the tactics to bring it to heel.  
On point with tactics, you mention mating disruption so I am wondering what is the density of the DBM in a field? Totally not a veg guy here, so just wondering roundabouts where this number would be.  
by Surendra K. Dara
on December 17, 2021 at 9:03 AM
Thanks for the feedback, Mark! Such input from peers is very important to improve what we do.  
Regarding your question, I can give you what I observed in my last year's study in Brussels sprouts. On an average, we had about 200 moths/acre in our traps where the population did not cause a significant damage. You can imagine how high the numbers can be if there are significant yield losses.
by Mark Bolda
on December 18, 2021 at 9:31 AM
So let's say a big infestation of DBM would be 10x of what you have there in your traps, which as we both know is not all of them, but it gives us a good baseline. 10X adults = 2000 moths per acre/43560 ft sq per acre gives us 0.04 moth per sq foot or roundabouts 22 sq feet per moth. Definitely not very packed together out there, andit looks like your mating disruption call is spot on with this sort of density.
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