(E,Z)-3,13-Octadecadien-1-yl acetate

This substance belongs to the category of synthetic sex pheromones used as semiochemicals for environmentally friendly crop protection.

The mechanism of action relies on the mating disruption technique. By releasing the pheromone into the environment, it creates a "false" olfactory landscape.

The high concentration of the synthetic scent masks the natural signals emitted by females, preventing males from finding mates.

This disruption significantly reduces the reproductive success of the pest population, leading to a natural decline in the next generation.

Using this substance helps to minimize the reliance on traditional broad-spectrum insecticides, preserving beneficial insect populations.

The compound is primarily used to control specific Lepidopteran pests, particularly those within the Gelechiidae family.

Its most common agricultural application is the management of the Tomato Leafminer (Tuta absoluta), a destructive pest for solanaceous crops.

It is effective in both open-field production and protected cultivation (greenhouses) where pressure from leafmining insects is high.

The pheromone acts exclusively on adult males, breaking the pest's reproductive cycle at the adult stage.

Since it is highly species-specific, it provides targeted control without affecting non-target organisms or local pollinators.

Application rates vary based on the delivery system, which may include passive dispensers or active automated pheromone release devices.

For population monitoring, standard practice is to deploy 1-2 pheromone traps per hectare to track seasonal pest activity levels.

For mating disruption, the density of dispensers ranges between 300 and 600 units per hectare, depending on the anticipated pest pressure.

Dispensers must be installed prior to the emergence of the first adult generation, based on monitoring data or historical trap reports.

The longevity of the pheromone supply depends on temperature and UV exposure, typically lasting throughout the primary flight season.

This substance is not an insecticide and will not kill existing eggs, larvae, or pupae, limiting its use as a "knockdown" solution.

Success requires consistent coverage; gaps in dispenser placement can create "refuge" areas where mating may still occur.

Storage must be handled with care, keeping containers sealed and in cold storage to prevent the degradation of the volatile compounds.

Handling should involve basic safety precautions, such as avoiding prolonged skin contact and ensuring proper ventilation during installation.

Extreme weather events, such as high winds or heatwaves, can shorten the lifespan of the dispensers or dissipate the pheromone plume prematurely.