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
07 Aug 2026
A study evaluates 92 entomopathogenic nematode strains against Drosophila suzukii. Steinernema carpocapsae NC116 shows high efficacy against larvae, while sublethal effects on adults open new opportunities for integrated pest management in cherry production.
07 May 2026
In Turkey, research from Firat University shows how computer vision, deep learning and machine learning can classify cherry ripening stages with accuracy above 95%, helping improve harvest timing, fruit quality and production chain management in orchards.
07 Sep 2026
Chancay Port cuts transit to China to 21-23 days, creating new prospects for Peruvian cherries. Peru is focusing on low-chill varieties, Andean growing areas and postharvest technologies to build a competitive position in the expanding global fresh cherry market.
07 Sep 2026
Chilean frozen cherry exports grew 95% in volume between 2024 and 2025. According to Gonzalo Bachelet of Chilealimentos, the sector offers new opportunities to add value to fruit not sold fresh, diversify markets and support investment in the expanding frozen cherry sector.
