Periodico olivo 3 Luglio 2026

Subscribe to the Aipo YouTube channel to stay up-to-date - Magazine No. 27 of July 3, 2026 Phenological phase: first olive growth. Summer 2026 is confirming a particularly challenging climate for olive trees. The heat began well early, as early as the second ten days of May, and remained intense and continuous throughout June, with temperatures consistently exceeding 33–35°C and unusually warm nights that prevented the plant from recovering energy. Global radiation remained high and constant, with values ​​between 24 and 29 MJ/m²/day, accentuating evaporative demand and increasing physiological pressure on the leaves. Despite this, the olive trees are generally in good vegetative condition, but in several plots, yellowing and leaf drop are more pronounced than in 2025. Some of this leaf drop is physiological; the olive tree naturally renews its foliage between late spring and early summer, eliminating older leaves, older than two years, without this being a pathological sign. In 2026, however, leaf senescence was accentuated by early and prolonged heatwaves. Northern Italy Climate Report - June 2026 2026 is proving to be one of the most challenging years for olive growing in Northern Italy. The climate data recorded in Illasi between late May and June show a picture that, in terms of thermal characteristics, solar radiation, relative humidity, and evaporation, can be considered representative of most northern olive-growing areas. The first element that emerges from the data is the precociousness of the heat, with highs between 34 and 37°C already being recorded as early as June 20th, values ​​that in 2020–2024 only appeared in the second half of July. Nighttime lows, often above 22–24°C, have drastically reduced the plant's ability to recover energy through nocturnal respiration. Global radiation has maintained high and constant values, between 26 and 29 MJ/m² for many consecutive days. These values ​​are higher than the historical average for June, which for the last thirty years has ranged between 22 and 25 MJ/m². The most exposed leaves, especially mature and senescent ones, rapidly experience oxidative stress and are eliminated from the plant to reduce the evaporative surface and preserve younger tissue. Relative humidity has shown marked fluctuations, with lows around 30–35% and highs above 90%. This alternation amplifies water stress and creates favorable conditions for certain fungal diseases, such as lead leaf spot, which exploit weakened tissue. At the same time, high humidity at night, combined with high temperatures, further reduces the leaf's ability to dissipate heat accumulated during the day. The baseline evapotranspiration (ET0 Hargreaves) reached values ​​between 5.0 and 6.0 mm/day, significantly higher than the historical average for June, which ranged between 3.5 and 4.5 mm. This means that evaporative demand from the atmosphere was much higher than normal, resulting in a cumulative water deficit that put pressure on the root system. Plant health situation Olive moth (Prays oleae): carpophagous generation now nearing its end. The larvae have completed most of their feeding activity on young drupes, and the percentage of affected fruit varies depending on the variety, altitude, and microclimate. Olive fruit fly (Bactrocera oleae): catches are low due to high temperatures that limit adult activity. For those intending to adopt rock dust-based deterrent methods, the current period is the optimal time to intervene. Kaolin, bentonite, zeolite, talc, and agricultural lime form a protective coating on the drupe that reduces attractiveness and physically hinders egg laying. Effectiveness depends on uniform distribution of the product across the entire canopy and on weather conditions, which must ensure adhesion and persistence of the material. Mass trapping can still be initiated or reinforced using food or pheromone traps. Devices such as BioMagnet™, Eco Trap®, Dakofaka®, Flypack, and Dacus Trap continue to provide valuable support in environments where fly pressure tends to increase with the arrival of the first cool weather. Brown marmorated stink bug (Halyomorpha halys): present, albeit in limited numbers due to high temperatures. In the absence of previous treatments, treatment with Deltamethrin, authorized for a single seasonal application, can be used. This treatment can also help control the olive fly. Tel. 045 8678260 @aipoverona Subscribe to the Aipo YouTube channel to stay updated -