Extension Report David Ostermann

摘要

A total of 237 operations and about 7000 hives were inspected in the spring and fall this year. AFB was found in 44 operations. Last year (2005), 255 operations were inspected, and AFB was found in 26 of those operations. It i speculated that more AFB-positive operations were found this year due to the early spring and advanced brood rearing. Fig. 1 shows the spring percentage of hives inspected and found with AFB over the past 20 years. Analys of the samples processed in the lab didn't show any unusually high pest levels, on average, although some sample certainly indicated damaging levels (eg. varroa, in particular). Last year, nosema disease was found at higher leve than normal.