SWD update for June 26, 2015
SWD is being trapped now , especially in early areas in southwestern Ontario. Growers with raspberries ripening in southwestern Ontario should spray for SWD before harvest begins. Best options at this time include Delegate, Entrust, Success, Malathion. Of these, all will control small caterpillars and loopers, but only malathion will control rose chafer.
Strawberries are also at risk of SWD infestation in these areas, however, the need to spray is less certain. In strawberries continue to watch for damage excessively soft or leaky fruit. Growers with large blocks of late season varieties, or producing blocks of day neutral varieties could spray an insecticide, especially if there is an abundance of harvested fruit on early varieties nearby.
So far we continue to catch SWD flies only here and there. We have not caught them in the same trap twice, and have seldom trapped them at…
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