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
07 Sep 2023
Several conclusions can be drawn: of great importance is the efficiency of orchard management, the impact of which on total emissions is still significant. In the distribution phase, low-impact transport systems, such as those by sea, should undoubtedly be favoured.
19 May 2026
A study carried out in Konya, Turkey, analyzes energy efficiency, greenhouse gas emissions and input use in sour cherry production, highlighting strong productivity but high reliance on electricity, chemical fertilizers and non-renewable sources across the production cycle today.
17 Sep 2026
The new protocol opens China to South African cherries from the 2026/27 season. With 819 hectares planted, rising exports and a 2-3 week window before Chilean peak volumes, South Africa is targeting zero-tariff access, new investment and a stronger presence across Asia.
17 Sep 2026
In 2026, cherry production in the Yakima Valley and the U.S. Northwest is heading toward 17 million boxes. Lower volumes, firmer prices and solid demand support growers, while Rainier cherries face losses from spring frost, wind and rain. The market remains resilient.
