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Anna, Teacher, writer, biologist
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Not sure if you have a expert on this...been growing sweet

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Not sure if you have a expert on this...been growing sweet corn for sale last few years and i have been going later into the year with different patches ,but the later crop will have a worm in the tip almost every ear! What could i do to keep this from happenning, spray with some type of unrestricted product? and what would that be? Also if you know that can you tell me the timing of the spray? thanks tim

It sounds like your corn is being infested corn earworm. It is the larva of a moth that lays its eggs on the silk. The larva hatch and then work their way down to the tip of the ear. They can be controlled somewhat by squirting mineral oil into each ear right after the silks start to dry. Use about 1/2 of a medicine dropper in each ear.

You can also spray with Dipel - available in garden supply stores. It is unrestricted in most states. Sevin is also effective, but follow directions on how close to harvest it can be used. If you use a spray, be sure to spray in the silks.

If you have more questions, let me know by clicking on REPLY. Good luck controlling the worms.

Customer: replied 6 years ago.
for best control would it be prior to silk or just after, we have a few acres to do
It would be best to do it just after. All of the control methods are most effective just as the silk starts to dry. None of them will give you 100% elimination of the worms, but should take care of most of them.

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