{"id":2000,"date":"2022-02-25T17:21:19","date_gmt":"2022-02-25T22:21:19","guid":{"rendered":"https:\/\/site.extension.uga.edu\/pecan\/?p=2000"},"modified":"2022-03-04T15:40:53","modified_gmt":"2022-03-04T20:40:53","slug":"ambrosia-beetle-update","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/pecan\/2022\/02\/ambrosia-beetle-update\/","title":{"rendered":"Ambrosia Beetle Update"},"content":{"rendered":"\n

I’ve talked to growers from Fort Valley, Hancock County to South Georgia who have identified Ambrosia beetles being very active this wee. Once we have consistent warm days, the adults start flying. If you have had problems with this pest before OR if you have newly planted trees, it is likely a good idea to begin spraying the trunks of young (1-3 yr old) trees with a pyrethroid like Bifenthrin.<\/strong> Due to the number of beetles captured inside trunk protectors, make sure to remove the protectors before spraying OR spray down into the tube<\/strong>, being sure to coat the trunk as best you can.<\/p>\n\n\n\n

Control<\/h1>\n\n\n\n

The last two years, former entomologist Dr. Angel Acebes organized research on ambrosia beetle control. Initially, we were looking at painting the trunks of trees compared to spraying a pyrethroid. I managed one of the locations in 2020, and that year we found the best control was both 1) spraying pyrethroid right after painting the trunk with white latex paint and\/or 2) spraying pyrethroid onto the trunk once a week. This experiment was conducted again in 2021 where spraying pyrethroid was better than everything else.<\/p>\n\n\n\n

\n
\"\"<\/a>
Table 1<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

Table 1: The control logs, Entomopathogenic fungi, trunk protectors and painted only logs were statistically all the same. Spraying pyrethroid every week was better than the paint with the pyrethroid together.<\/em><\/p>\n\n\n\n

Considerations and Plan for Management<\/h1>\n\n\n\n