New Bayer miticide/insecticide Oberon registered

Oberon 2 SC miticide/insecticide from Bayer CropScience has been federally registered by EPA. The new pest control product is registered as a foliar insecticide on cotton, corn, strawberries, potatoes and vegetable crops to control mites, whiteflies and psyllids.

“Bayer CropScience is proud to bring another new and much-needed chemical class to the marketplace,” said Jon Mixson, Oberon product manager for Bayer CropScience.

“The active ingredient of Oberon, spiromesifen, is the first member of a new class of chemistry called tetronic acids,” said Mixson. “The product also provides a brand new, unique mode of action — a lipid biosynthesis inhibitor — making our product an attractive option to help growers, pest control advisers and crop consultants manage insects and insect resistance.”

It is active against all mite development stages, including eggs, although juvenile stages often are more susceptible than adults. It's also highly effective against whitefly and psyllid nymphs and has a significant effect on the pupal stages of those pests.

It has been field-tested since the late 1990s in university trials.

Peter Ellsworth, Extension entomologist at the University of Arizona in Maricopa, tested Oberon in Western cotton for several years and said it provides needed flexibility in the marketplace. “It's great to have access to new chemistry without cross-resistance,” he said. “We're really being smart about insecticide choices and inputs. What we see in Oberon, we hope, is yet another highly selective whitefly control agent.”

Effective as either a preventive or threshold treatment, Oberon offers flexible rates and application timing, said Mixson. “For best results, whiteflies or mites should be treated at the beginning of population buildup and before leaf damage and discoloration.”

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