Abstract
Pear thrips, Taeniothrips inconsequens, adults overwinter in the soil and emerge in spring when soil temperatures reach ≈5–7°C. Earlier emergence can be induced at 10–25°C. When forest soils are sampled in December and held at 25°C, >98% of the thrips adults emerged within 25 d. The numbers of thrips obtained by induced emergence were similar to those collected in emergence traps in the spring. The number of thrips that emerge in spring is correlated with the resultant damage to sugar maple, Acer saccharum Marsh. This induced emergence method can be used by growers to monitor thrips populations, forecast damage and make decisions regarding their future forest management practices.
Published Version
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