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Manitoba Agriculture, Manitoba Crop Alliance, and FMC Canada have approved the use of Carbine insecticide for lygus bug control in confection sunflowers.
The need for an emergency use registration was identified as a result of the re-evaluation of lambda-cyhalothrin use in Canada.
Lygus bugs have become a serious economic threat to human consumption market confection sunflowers.
Lygus nymph and adult.
The insect feeds on the developing seeds causing a brown spot and physical scar on the seed and leaves a bitter taste.
The industry standard allows for a maximum of 0.5 per cent kernel brown spot, which results in an economic threshold of about one lygus bug per nine heads.
If lygus bug adult numbers reach that economic threshold prior to or at the beginning of the bloom stage producers should look at implementing control measures.
Please note that confectionary sunflower farmers interested in using Carbine on their sunflowers are recommended to contact their ag retailer as soon as possible to allow for timely delivery in case there is no local stock available.
More information on the emergency use registration of Carbine can be found here.