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
18 May 2026
Vignola PGI cherries begin the 2026 season with estimates of up to 50,000 quintals. Premium quality, rain protection systems and a new marketing campaign strengthen the brand’s positioning across mass retailers, specialist shops and Italian consumers until early July in Italy.
06 Nov 2025
The 2025-26 Chilean cherry season kicks off with an air shipment to New York. Crunchy, sweet, high-quality fruit sets the tone. Forever Fresh targets the US market to reduce reliance on China and strengthen winter exports with premium, carefully selected varieties.
11 Nov 2026
South Africa’s cherry harvest season began two to three weeks early, but production in Ceres could fall by over 50%. Heat and cold during flowering affected fruit set. Early cherries reach 30 mm, while Tru-Cape aims to increase exports from 15% to nearly 20% of its crop.
11 Nov 2026
Nel 2026 l’Estremadura approva 19,59 milioni di euro di aiuti per cereali, ciliegie e apicoltura: fino a 50 euro per ettaro irriguo, 1.500 euro per ettaro di ciliegio e 18 euro per alveare. Le pratiche saranno avviate d’ufficio e i pagamenti sono previsti entro fine anno.
