The presence of the El Niño phenomenon generated favourable climatic conditions for the development of Drosophila suzukii, a fly that threatens cherry orchards this season. The higher relative humidity resulting from a cooler and wetter spring, especially in central and southern regions, could favour an increase in the populations of this pest from the veraison phase, when the fruit is more susceptible to attack.
Despite the good climatic conditions for the spread of Drosophila suzukii, experts point out that growers have gained more knowledge about the pest in previous years, which enables them to control it more effectively and minimise risks. Although conditions are favourable, the experts believe that the worst is over and that it is now up to growers to keep the situation under control.
Despite the apparent improvement in weather conditions, experts emphasise the importance of monitoring and controlling the presence of Drosophila suzukii in orchards. Mass traps strategically placed in the orchard and surrounding areas, especially where fly host species are present, are recommended.
Surveillance and application of insecticides are essential, especially from the colour break, when cherry trees are most susceptible to this pest.
1) Ciclo di vita da uovo a adulto tra 8-18 giorni. 2) Tre le 10-15 generazioni l'anno. 3) Longevità tra 21-66 giorni. 4) Una femmina può deporre tra 400-600 uova. 5) Può deporre fino a 3 uova per frutto.
The experts also emphasise the need for adequate rotation of the active ingredients of the insecticides used, as Drosophila suzukii can develop resistance to the products. They also emphasise the importance of continuing research and development of biological tools such as repellents, chilli and garlic extracts, as well as fungal and bacterial products, to complement control strategies.
In conclusion, despite growers' experience, the presence of El Niño and current climatic conditions require constant vigilance and preventive measures to protect cherry orchards from the threat of Drosophila suzukii.
Source: Cerezos Chile
Images: Cerezos Chile
14 May 2026
The Cereza del Jerte PDO is focusing on quality, traceability and new varieties to strengthen exports and its presence in global markets. After nearly 2,000 certified tonnes last season, the 2026 fruit promises excellent flavour, more visibility and higher certified volumes.
03 Nov 2025
Tru-Cape's 2025 cherry season kicks off early in Ceres under near-perfect conditions. Yields expected to rise 5–7%, with fruit exceeding 25° Brix. Export markets show strong interest. New varieties, expanding shipments, and a focus on sustainability define this season.
04 Aug 2026
A study conducted in Skardu, Pakistan, shows that postharvest dipping of sweet cherries in 1% calcium chloride helps preserve firmness, color, aroma, and microbiological quality, reducing waste and extending shelf life through distribution and retail, with better quality.
04 Aug 2026
In Chile, a three-year study conducted in Curicó shows that low-density plastic covers increase cherry size, protect orchards from frost and hail, and improve fruit quality, profitability and the international competitiveness of growers across Maule and Asian markets.
