Spotted Wing Drosophila, a well-known pest that infests ripe, ready-to-eat fruit, poses a significant threat to farmers because it is very difficult to control with standard pesticides. A new approach to tackling this pest involves manipulating the behavior of these insects by disguising healthy fruit as if it were infected with an unappealing pathogen.
By studying the specific odors emitted by infected fruit, researchers have identified the chemicals that repel the flies when applied to healthy fruit and are developing a slow-release device to disperse these fruity odors in the field, ensuring that they do not come into direct contact with the fruit. This method provides a new tool to help farmers protect their crops without relying exclusively on insecticides.
‘The cherries of the southern hemisphere are us,’ says Claudio Vial, general manager of the cherry exporter Ranco Cherries, who provides information on the increase in Chilean cherry production (+37%), to reach around 130 million tonnes in 2027.
Ovule vitality is the key factor for cherry fruit set. High temperatures during flowering reduce the PEP and compromise fertilization. Targeted strategies like biostimulants and ethylene control can make a crucial difference in warm or high-risk growing areas.
Trunkguard, the biological inoculant developed by INIA, targets wood-decay fungi in cherry, apple, blueberry and European hazelnut while activating natural plant defenses. Greenhouse trials had promising results, particularly in cherry plants under controlled conditions.
A Tasmanian field trial is examining how rain covers affect orchard microclimate, light and cherry quality, helping growers manage hotter, drier summers, extreme rainfall and fruit cracking while protecting yields, premium production and the fruit’s commercial value now.