Something is chewing through the roots of my squash plants, just below the surface. The only bugs I've seen are ants and pill bugs. Could one of these be the culprit? What can I do to stop this before all of my plants are gone? Thanks so much.
Sevin dust will kill them. Any garden supply will carry it. Even Walmart has it. The dust is best and easier to apply than the liquid. Be sure to get it on the backs of the leaves and on the ground. Sounds like squash borer to me too. They are really bad on squash.
To prevent heavy infestation, rotate crops and use lightweight row covers until flowering. Cultivate soil in autumn to bring overwintering stage to the surface. Remove all crop residues at the end of the growing season, dust the base of the plant regularly with rotenone, inject Bt into the stems, or handpick the caterpillars by cutting open the stem and killing the caterpillar. You may can save your plant doing this if you catch it in time. Also, if you can, find varieties resistant to borers. good luck.
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