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.
Chilean agronomist Jorge Astudillo Galvez visited the farms of 15 producers in Mendoza to analyse production conditions and give technical advice, with the aim of providing a diagnosis on how to improve local production to reach new markets.
“The way technology detects defects, precisely identifies colors, and sorts sizes is far superior to what mechanical sorters and humans could achieve. Considering the large volumes we handle and the high standards we need to meet today, using optical sorting is simply a must.”
The study on Gisela 5 rootstock examines how salinity affects cherry growth, chlorophyll, ion balance and antioxidant defenses, highlighting sodium buildup, biomass loss and the rootstock’s limited tolerance to salt stress under in vitro conditions, after four weeks.
France expects more than 30,000 tonnes of cherries this year, around one third above average. Growers are urging consumers to buy more, while hand picking, short shelf life, pest pressure and rising orchard costs keep retail prices between €5 and €8 per kilo in June.