Onion Maggot Control - Ontario
2021-2-13u2002·u2002The onion maggot is the most damaging insect pest of onions throughout the northern areas where onions are grown. If not controlled, it can prevent the production of a marketable crop. In Ontario, the onion maggot has become difficult to control. Resistance has developed to many of the insecticides used as granular furrow treatments at seeding for control of early season damage.
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