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
30 May 2024
‘Thanks to the protection, the cherries are safe, the number of treatments is 75% less than in the open field,’ says Moreno Morisi, ‘the quality is excellent and the production is without residues. And I have the guarantee of harvesting as much as budgeted’.
11 Sep 2024
The demand for Chilean cherries is high from the Chinese market, which receives over 91% of Chile’s cherry export volume. Post estimates that cherry production in marketing year (MY) 2024/25 will reach 500,000 metric tons (MT), an increase of 6.8% compared to MY2023/24.
03 Apr 2026
A study examines the impact of soil salinity on sweet cherry by comparing MaxMa 14 and Gisela 6 rootstocks. Differences in growth, biomass, and salt stress tolerance provide practical guidance for improving orchard resilience and long-term productivity.
03 Apr 2026
Dark sweet cherries improve gut microbiota, reduce inflammation, and support memory and focus. Scientific studies highlight benefits for metabolism and cognitive health, especially in higher-risk individuals and widespread metabolic conditions, with growing scientific validation.
