Revisting the Colorado potato beetle

Tonight (25 May 2011) Kelly and I went out to check on the potatoes and the potato beetles. We found some of the potato plants were being decimated while the infield horse nettle was untouched by the beetles. At the time of the previous blog post damage was not apparent, but now that the larvae are present it is.

The later instar larva are the most damaging.

The damage is a severe defoliation, coupled with insect feces coating the plant.

The egg masses we found promise that the beetle population is still increasing. 

The great pioneer entomologist, Charles Valentine Riley , coined the name Colorado beetle and wrote this  awesome book  about the beetle and its control. As these are a test plot, we used an old control method – squishing. Next week we will probably squish again with two to three more squishings before we harvest.



Categories: General, Insects

Tags: ,

1 reply

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