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
12 Jul 2024
Although not yet detected in Australia, it is known to spread rapidly and has been identified as the third priority plant pest nationwide. Early detection and reporting is critical to manage and prevent its spread.
25 Nov 2025
At the sixth ExpoCerezos in Curicó, ANA Chile® reported on the 2024/25 cherry season, showing a 51% export increase, early ripening varieties like Sweet Aryana®, and key challenges in pollination, logistics and emerging markets in Asia and Europe.
26 Aug 2026
In Chile, biostimulants based on Macrocystis pyrifera, alone or combined with Pseudomonas koreensis, improve the ‘Colt’ cherry rootstock response to drought and water stress by supporting photosynthetic efficiency, stomatal control, root growth and plant resilience.
26 Aug 2026
In the United States, vacuum microwave drying is emerging as a fast and efficient solution to extend the shelf life of cherries and berries, preserving their quality, color, shape, and nutrients while reducing processing times compared with conventional drying methods.
