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 Jun 2024
The aim of this renewal is to adapt the visual identity of the PDO to an increasingly digital world. The Regulatory Council renews the corporate image by launching a new logo, representing both cherries and PDO picotas.
22 May 2024
As the main supplier in the southern hemisphere. today Chile has planted about 73 thousand hectares. The growth is projected to mean that in the coming years about 5,000 hectares could be planted per year, considering a near horizon of 100 thousand hectares planted before 2030.
22 Apr 2026
International Plant Selection launches the ZIC club to exclusively manage Zaiger Genetics cherry varieties in Europe. France, Spain and Murcia are involved, as climate change accelerates the need for new cherry cultivars that are more resilient, productive and adaptable.
22 Apr 2026
Chile strengthens its dominance in cherry exports to China, but the 2025–2026 season shows a price drop of over 30%. Spain’s entry into the Asian market introduces new competition, as demand remains strong but the product’s positioning continues to evolve.
