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.
According to a survey conducted by Dondini et al (2019) and recently updated (Lugli, 2023), more than 50 breeding programmes aimed at creating new cherry varieties and rootstocks are active worldwide. Creating a new variety has become an all-round entrepreneurial activity.
“Shipments in California (2024) peaked on May 17, compared to June 12 in 2023. That’s a good thing,” said B.J. Thurlby, president of the Northwest Cherry Growers, in his assessment of the 2024 season.
Cherry production is shaped in autumn: irrigation, stored reserves and dormancy affect bud fertility and winter-chill response. Orchard data help estimate crop loads and plan winter pruning, guiding timely decisions on fruit size and next season’s yield in each orchard.
A Ukrainian study tests hydrocooling in three sweet cherry cultivars and one sour cherry cultivar: water at 1°C with organic acids, cooled to 2°C near the pit. It preserved positive indicators and cut negative impact by up to 49.73%, with effects varying by cultivar.