Discuss Anne Southern's answer to: What bugs make slimy nests

The worst offenders are Potato Beetle larvae and Grape Phyloxera.  Both make slimy holes around the roots of the plants they infest and destroy.

Potato Beetles move very quickly once they pupate and larvate so the best move is to broadcast spray your whole field with (believe it or not) onion juice with just a bit of calcuim phosphate as a synergist.  Mix 30 lbs onion juice and 12 lbs of calcium phosphate in 55 gallons of water, set your booms at 12' and that will cover half an acre of affected land.  Phyloxera means you have to inject a triple concentrate 3' deep in the soil wherever you see the bugs but use the same chemical.

If you have aphids, use ladybird beetles to zero in on the pests.