BASF launches natural enemy attractant in the United Kingdom

BASF announced in the United Kingdom the launch of Apthena, a biological product aimed at the integrated management of aphids. The formulation contains (E)-β-farnesene, known by the acronym EBF. The compound acts as an alarm signal for aphids and attracts natural enemies, including ladybugs, lacewings, and parasitoids. Field trials recorded an 18% increase in the number of pea plants with beneficial insects. In sugar beet, the presence of aphids fell from an average of 2% to 0,5%.

The product does not directly control the pest. Its function involves manipulating insect behavior through chemical ecology. BASF positions the technology in the lower stages of the Integrated Pest Management pyramid. The goal is to strengthen ecosystem services and slow the growth of aphid populations. This strategy can postpone the need for chemical intervention.

Aphids release (E)-β-farnesene after attacks or disturbances. The signal causes nearby individuals to disperse. Predators and parasitoids also detect the substance. These organisms use the compound as a kairomone to locate prey or hosts.

Continuous release

Apthena's formulation maintains the continuous release of the active ingredient for a period of 20 to 30 days. The process uses microcapsules produced with natural and inert ingredients. According to the company, the formulation does not contain microplastics. The encapsulation aims to reduce the limitations of (E)-β-farnesene, a volatile compound subject to rapid degradation.

Standardized tests in Y-shaped tubes evaluated the response of ladybugs to the product. The insects showed a preference for airflow with Apthena and followed the pheromone gradient more frequently compared to the control. Field evaluations in peas and sugar beets reinforced the effect on the occurrence of beneficial organisms and on the aphid population.

The company's technical document recommends use before the expected arrival of aphids, with the support of monitoring and forecasting systems. Another possibility involves tank mixing with insecticides compatible with Integrated Pest Management programs. The product can also be included in the program in situations where pest pressure is insufficient to justify an insecticide application.