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
23 Aug 2024
A study by Italian and Romanian universities evaluated the impact of cultivar and fruit position within the tree canopy during pre-ripening or full ripening on the quality parameters of organically grown cherries.
11 Jul 2023
The nutritive value of fruits is directly related to their quality, which can be compromised by numerous adversities both in the field and postharvest. Various fungi and bacteria can cause disease on cherry trees.
03 Aug 2026
Chile’s cherry industry is entering a new phase focused on value. Scientific research, measurable quality, new varieties and advanced logistics will be essential to boost demand, reduce dependence on China and protect Chile’s leadership in competitive global markets.
03 Aug 2026
The Bing cherry, a symbol of Oregon and Washington State, was named after Ah Bing, a 19th-century Chinese orchard worker in Oregon, USA. A new picture book tells his story through agriculture, immigration, discrimination and an American folk legend rooted in history.
