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Date: | Wed, 24 Oct 2018 13:53:06 -0400 |
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>1. Apply OA vapor, noting the type of applicator used, and where
inserted in the hive.
2. One minute after application is complete, open the hive (wearing a
respirator and gloves), and pull combs from the center of the cluster.
3. Visually compare how "white" the bees are in the center of the
cluster, compared to those at the bottom or on the outside perimeter.
4. Report your findings to Bee-L.
1. Pro-Vap 110 at shielded entrance of double deep with solid bottom. Standard burn. Wait for temp to recover to 235 after roll and insertion, 45 seconds+/-. No visible vapor escape from hive.
2-3. Did so. Colony very populous and not in tight cluster, estimate 14-16 frames of bees. Working from #2 frame toward center brood at 4 & 5 (saw queen). Saw some visibly dusted bees on all frames but can not say they were more clustered in center and certainly not uniformly so. Did not go into bottom box but did see a number of dusted bees come out onto landing after removing shield.
Notes: Ambient temp at hive 39F, 8:45 PDT, No active flight before test. I chose my "troublesome" colony as discussed in post of 10/22. Recall counts; 8/21 21, 9/28 38 (after 3 OAV, & applied 4th) 10/8 56. Yard with this colony moved home on 10/10 (hopefully away from influx source if there is one) and this colony got 2 formic mite wipes of 25ml ea. twice. 10/24 (immediately after today's vap test) 18. This colony is NOT representative but I wanted to check it anyway. All others tested are near or below 1%. I'll do another test of a tight cluster in near future on a more representative colony and report.
Paul Hosticka
Dayton WA
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