The same insects keep "bugging" us. The corn rootworm may be a greater problem this year (especially when corn follows corn) because of somewhat larger numbers of beetles laying eggs in corn fields last fall. The alfalfa weevil is spreading; chemical treatment may be necessary on first cuttings of alfalfa in some areas of easten Iowa. And the authors advance a new biochemical hypothesis about the corn plant ( at least some varieties ) and its resistance tolerance to corn borer larvae.