The NIAB's recent investigations into Drosophila spotted-wing (SWD) - the invasive fly that has revolutionised the fruit industry - are explained by Dr Michelle Fountain. This small fly has a unique behaviour, preferring to lay its eggs in unripe fruit, leading to considerable crop losses, up to 90%.
The initial invasion of SWD in the UK triggered an educational effort among fruit growers, but early control attempts relied mainly on insecticides, disrupting established biological methods. New research by the NIAB, however, offers innovative perspectives. SWD was found not to be competitive with other species that lay their eggs in softer fruit, opening the way for potential future controls.
In Europe, the introduction of commercial parasitoids is one solution, but in the UK, NIAB has focused research on analysing the contribution of native parasitoids, which are often restricted in crops due to pesticide use. One interesting approach involves trapping SWD in surrounding areas during autumn and winter, taking advantage of the fly's period of activity.
The collaboration with BigSis demonstrates a promising approach, using X-rays to sterilise flies. Projects with Russell IPM and Microbiotech are developing strategies that combine reduced doses of insecticides with attractive baits, significantly reducing pesticide use and environmental impact.
Despite the challenges, research and innovation are shaping the future of SWD control in the UK fruit industry. Diversification of control strategies, including automation, is becoming crucial to address changes in pest conditions and populations.
Read the full article: Hortidaily
Image: Hortidaily
06 Oct 2025
Issue 155 of Redagrícola explores the future of Chilean cherries with expert interviews, crop management strategies, postharvest techniques, and a strong focus on quality—key factors to stay competitive in global markets and face the upcoming challenges of the industry.
18 Sep 2025
Cherry cultivation has become one of the most profitable farming activities thanks to new high-performing varieties, dwarfing rootstocks, passive protection systems, and modern pruning methods. This guide provides useful tips for managing a cherry orchard successfully.
07 May 2026
The 2026 cherry season in the Pacific Northwest starts with forecasts between 19.5 and 21.5 million boxes. Lower output than the 2025 record, an early harvest and closer coordination with California define a key phase for the USA cherry market trends.
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.
