Tree stage:
3/28/98 – green tip
4/1/98 – half inch green
4/14/98 – tight cluster
4/21/98 – loose cluster
4/29/98 – early bloom
5/4/98 – nearly petal fall

European apple sawfly trap captures

Average number of adult European apple sawfly adults caught on white sticky traps in each monitored block. Averages are cummulative.
**Threshold = 9/trap of no prebloom insecticide; 5/ trap if applied prebloom insecticide**