Abstract
AbstractIn 1972, limb jarring, tanglefoot trunk barrier, emergence trap, and insecticide spray knockdown methods of sampling for adult pecan weevil, Curculio caryae (Horn), were compared. The latter two methods were most efficient in detecting onset of adult emergence, seasonal fluctuations in emergence, and population differences among sample dates and among trees. In 1973, further comparisons of the latter two methods gave results similar to 1972 results. The required sample size was influenced by population density. The number of pecan trees to be sampled for a 20% standard deviation of the mean was small enough to be practical for grower use for most sample dates in 1973 and at dates near peak emergence in 1972.
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