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Fruits
Volume 57 Number 5 Date 05/10/2012 CODLING MOTH - Low to moderate numbers of moths are appearing in pheromone traps. Reports of activity were received from 17 of 29 orchards in the past week, with a high count of 14 moths per trap near Deerfield in Dane County. The spring biofix was set on May 2 or 3 at several sites in southern and central Wisconsin. It should be noted that the viability of codling moth eggs declines rapidly when female moths cannot fly and oviposit due to unfavorable weather conditions. Most egg masses become unviable after 5-6 days. Orchard locations that registered 5 or more moths on May 2-3 but have experienced cold, windy nights in the subsequent 5-6 days may need to disregard the preliminary biofix and plan controls based on the next sustained moth capture. SPOTTED TENTIFORM LEAFMINER - The second of three flights this season is expected to begin in the next 1-2 weeks in the southern and central counties, once 539-750 degree days (base 50°F) are surpassed. By contrast, counts in Bayfield and Marinette counties continue to escalate as the first flight gains momentum. --Krista Hamilton, DATCP Entomologist 
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