A product which attracted a lot of interest last season was the helio-this moth attractant, Magnet. By targeting the mobile moth stage of Helicoverpa, Magnet has the potential to affect pest numbers beyond a treated field. This is because Magnet treated fields act as a "sink" for moths, since the number of moths entering a field will be greater than the number leaving due to mortality caused by Magnet. The result is a decline in moth numbers and hence egg laying in the surrounding area, with the effect greatest nearer the treated field. This area wide impact will increase over time with multiple Magnet applications in the same field and/or a greater number of Magnet treated fields in the area.
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