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
09 Dec 2024
Claire Scofield studies the effects of environmental conditions under rain covers on calcium uptake in cherries. The aim is to further our understanding of xylem dynamics and the impact of rain covers on these processes.
18 Mar 2024
The global cherry market has a leading player: Chile. The keys to success? Varietal innovation, farming systems, post-harvest technologies. This worldwide case history was narrated by the new video-lesson of the Macfrut Academy.
11 Mar 2025
Three new varieties of Jerte PDO cherries will be put on the market this year. The PDO Cereza del Jerte was able to modify its specification to cope with the increase in the number of products falling under its label.
11 Mar 2025
Cherries and quality, also in relation to the increasingly challenging climatic conditions for cherry growing: these topics were developed among others during the latest 'Stone Fruit Day' organised by Washington State University (WSU).
