Periodico olivo 26 Giugno 2026

Subscribe to the Aipo YouTube channel to stay up-to-date - Magazine No. 26 of June 26, 2026 - Phenological stage: first olive swelling The olives begin to grow and swell significantly, reaching an average size of 14 to 18 mm. Plant health situation Olive moth (Prays Oleae): In treated olive orchards, monitoring has shown a marked reduction in adult populations. Those who have not yet implemented treatments may consider using Spinetoram (e.g., Corteva's Delegate™ WDG). In organic farming, Bacillus thuringiensis (e.g., Ascenza Doctrin or Corteva's Delfin®), natural pyrethrum (e.g., Channel Green Pyrethrum), or Azadirachtin (e.g., Sipcam's Oikos®) are recommended. Deltamethrin (e.g., Decis Evo or Deltrin), which is not included in the integrated production regulations, can also be used. Olive fruit fly (Bactrocera oleae): This is the ideal time to set up mass-trapping traps, especially for table varieties that are already showing bites. At this stage, olives release attractive substances that encourage attack. Brown marmorated stink bug (Halyomorpha halys): Presence of adults, eggs, and nymphs. It is recommended to treat with Deltamethrin (e.g., Decis Evo), which offers a dual effect: stink bug control and support for treatment against the moth. Pepper mealybug (Saissetia oleae): Over 95% of eggs have hatched. Those who have not yet treated can treat with mineral oil (e.g., Oliocin Plus by Bayer) or soft soaps (e.g., FLiPPER by LDT). Peacock spot (Spilocaea oleagina): Where confirmed, treatment with copper oxychloride or hydroxide (e.g., Airone Più by Gowan Italia) or Pyraclostrobin (e.g., Cabrio Olivo by BASF) is recommended. Management of Grassy Land It is recommended to keep the grass cover no higher than 25 cm, cutting with equipment that shreds or chops the grass and then leaving it in place. Management of Non-Grassed Land The frequency of treatments should be adjusted based on the weather and the level of weed development, to ensure effective control without depleting the soil structure. Tillage should be superficial, involving only the topsoil layers, to avoid compromising the olive tree's root system. Fertilization Late June – early July: the window that determines olive tree production Between late June and early July, the olive tree goes through a crucial physiological phase. This is the moment when, while the olive grower focuses on heat management, protection, and irrigation, the first floral induction for the following season occurs within the tree. It is a process that is invisible but crucial: the olive tree begins to "decide" how many buds will become flowers the following year. Neither flowers nor inflorescences form yet; only the biochemical signal that directs some buds toward their reproductive destiny is activated. This mechanism consolidates when the plant manages to accumulate a high level of carbohydrates derived from photosynthesis compared to the amount of nitrogen present, determining an optimal Carbon/Nitrogen (C/N) ratio. This is an extremely delicate phase, because it requires the plant to perceive a condition of perfect balance, sufficient energy, sufficient nutrition, and sufficient continuity of growth. During these weeks, the plant completes its physiological post-fruit drop and transitions from cell division to cell distension, a phase in which the drupe grows primarily through tissue expansion, a mechanism that requires metabolic continuity, nutrient availability, and minimal water balance. Regular growth during this window not only supports ongoing production but also helps maintain efficient photosynthetic activity. The physiology of the olive tree doesn't stop with the heat; it slows down, adapts, and shifts priorities, but remains active. The rhizosphere, the area explored by the roots, continues to function, albeit with different mechanisms than in spring; the canopy maintains reduced but not zero photosynthesis; the plant reorganizes its metabolism to protect the growing fruit and, at the same time, prepare for future flowering. It's a balance: if the plant experiences water or nutritional stress, the initial floral induction may be weak or even nonexistent; if, on the other hand, it maintains constant growth, even minimal, the floral signal consolidates. For this reason, when autumn fertilization or fertilization at the beginning of vegetative growth has been limited, summer still represents a useful time to rebalance the olive tree's nutritional status. Tel. 045 8678260 @aipoverona Subscribe to the Aipo YouTube channel to stay updated -