Isonet T (MAPP 17929) is a controlled release dispenser for the mating disruption of the tomato leaf mining moth, Tuta absoluta
Isonet T (MAPP 17929) is a controlled release dispenser for the mating disruption of the tomato leaf mining moth, Tuta absoluta, the caterpillars of which can cause serious damage to a tomato crop. The product has been used successfully by UK tomato growers for control of this pest in the last two seasons.
Isonet T is composed of two parallel polymer tubes, one of which contains an aluminium wire to enable its positioning in the greenhouse, and the other filled with the specific T. absoluta sex pheromone (see picture below). For best results Isonet T should be applied at the start of the tomato crop, or even a few days in advance of planting (e.g. in December or January for long season crops). The dispensers should be hung vertically from the crop wire, clips or strings (see crop picture below) at an application rate of 800-1000/ha.
After installation of Isonet T the glasshouse becomes saturated with the pheromone of T. absoluta, with the result that male moths are unable to find females for mating, and hence reproduction of the pest effectively does not occur. As such this generally provides excellent control of Tuta, lasting for much of the season.
Tomato growers, on whose sites Tuta has been observed previously, are therefore strongly recommended to order Isonet T for application at the start of the crop.