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
19 Feb 2025
The recent breakdown of the Maersk Saltoro ship, carrying 1,363 containers (around 5 million crates) of Chilean cherries to China, highlighted the vulnerability of the fruit industry. The delay of its arrival was particularly critical for the distribution of fruit in China.
13 Mar 2026
Chilean cherries remain a key winter fruit in Guangzhou supermarkets. Demand is supported by household purchases, gifting traditions and retail promotions. Despite a more cautious Chinese market and a complex season, consumer trust continues to support sales.
23 Sep 2026
A study conducted in Kashmir, India, defines an extended BBCH scale for five sweet cherry cultivars. The 50 phenological stages described support more precise orchard management, from flowering and ripening to crop protection and climate monitoring across seasons now.
23 Sep 2026
In Aargau, Switzerland, an agri-photovoltaic system covers more than one hectare of cherry trees, combining power generation, rain protection and shading. Research is assessing its effects on yield, water management, soil conditions, disease pressure and fruit quality.
