In California, Drosophila suzukii, known as SWD, is developing increasing resistance to insecticides. This insect has become a problem for cherry, sugar cane and strawberry growers since its arrival in 2008, spreading to other states in the USA, Mexico and Europe.
SWD females, thanks to their serrated ovipositor, can even lay their eggs in hard-skinned fruits, damaging them. This leads to increased susceptibility to insects and diseases, as pointed out by the University of Minnesota Extension.
Entomologist Jhalindra Rijal conducted studies on SWD in cherries and revealed that resistance problems developed rapidly. Management practices based on spinosin, pyrethroids and malathion contributed to this resistance due to the limited use of active ingredients.
The inability to vary active ingredients has led to increasing resistance among SWD populations, not only in California but also in other regions of the US, such as Georgia and Michigan, which have experienced similar problems. Scientific studies have shown a significant decrease in the susceptibility of SWD adults to various insecticides, resulting in lower than expected mortality. Spinosad resistance has been widespread on the Central Coast.
Fonte: Farm Progress
Foto: Italian Berry
02 Jan 2024
Researchers at Michigan State University (USA) provide a comprehensive analysis of the flower development of sour cherries. Numerous transcriptional studies have shown that the regulation of flower initiation in rosaceous species is significantly influenced by hormonal balance.
19 Nov 2024
The monograph is the result of collaboration between the Edmund Mach Foundation and the Laimburg Experimentation Centre. The topics covered range from qualitative to agronomic aspects, orienting the information according to the needs and problems encountered in the area.
05 Feb 2026
A research study from the University of Chile investigates how controlled atmosphere storage improves the shelf life of ‘Bing’ and ‘Lapins’ sweet cherries. Results show significant postharvest quality improvements under cold storage and market simulation conditions.
05 Feb 2026
With precision farming, it's now possible to prevent fruit cracking by optimizing irrigation, monitoring and data collection. Sensors, drones and AI support European growers in improving yield and fruit quality in cherries, grapes, citrus and pomegranates.
