Periodico olivo 5 Giugno 2026

Subscribe to the Aipo YouTube channel to stay updated - Magazine No. 23 of June 5, 2026 - Phenological phase: between full bloom, petal fall, and fruit set. Fertilization After flowering and fruit set, the plant enters a phase in which it needs support both in immediate production and in the development of fruit cell growth. At this point, foliar fertilization is not an afterthought, but rather an intervention that directly affects the metabolism, improving tissue vitality and the drupe's ability to properly initiate the initial mesocarp growth. Boron is essential for pollen fertility and fruit set stability; algae extracts and plant-based tonics modulate the stress response and maintain active energy processes precisely when the plant tends to slow down. Phosphorus plays a crucial role in this phase, supporting cell division, the formation of the first pulp walls, and the energy metabolism necessary for the fruit's initial growth. A post-flowering foliar application of phosphorus and micronutrients optimizes mesocarp cell formation and supports the current year's production phase, while also improving the plant's ability to build future production. Plant Protection Olive moth (Prays oleae): Increased number of adult olives captured, though limited, with few ovipositions on the olive calyx. No active substance treatment is currently required. On organic olive farms, a treatment with Bacillus thuringiensis (e.g., Bacillus Chemia) is possible. The product should be applied preferably in the evening. Adding a wetting agent can be helpful for better distribution and persistence. Olive moth (Palpita unionalis): Presence of erosion of new shoots. If necessary, treatment can be performed post-flowering/fruit set with mineral oil or Bacillus thuringiensis var. kurstaki Brown stink bug (Halyomorpha halys): The presence of this bug is steadily increasing, especially on the edges of olive groves; no control measures are necessary. Peppercorn scale (Saissetia oleae): Presence of first-generation nymphs; the intervention threshold of 5-10 live nymphs per leaf has not yet been reached. Euphilippia olivina: Presence of first-generation nymphs on the undersides of leaves and shoots, producing honeydew. No specific control measures are necessary. Weevil (Othiorrynchus cribricollis): The presence of this beetle has been noted in several olive groves, causing crescent-shaped gnawing on the edges of leaves. If necessary, apply adhesive tape or resin glue around the trunks to prevent them from climbing up and accessing leaves and shoots. Fungal Pests: High humidity has increased the risk of infection by certain pathogenic fungi, such as peacock spot (Spilocaea oleaginea), olive leaf spot (Mycocentrospora cladosporioides), and olive leaf spot (Gloesporium olivarium). If necessary, treat with one of the following products: dodine, potassium phosphonate, pyraclostrobin, Bacillus subtilis (strain QST 713), or potassium bicarbonate. ----- Post-flowering: The New Frontier in Olive Tree Fertilization The post-flowering phase is no longer, as was once said, a time dedicated to "supporting fruit set." Fruit set, in fact, occurs in the days immediately following fertilization, when the plant decides which fruitlets to keep and which to drop. Once this window has passed, yield is no longer determined by the number of olives, but rather by their ability to grow properly in the first few weeks, when the mesocarp cells are forming and the stone begins its hardening process. This is where foliar nutrition takes on a crucial physiological role, as it directly affects the processes that regulate cell division, energy metabolism, and the stability of developing tissues. The initial swelling of the fruit is a phase of extremely high metabolic intensity. The drupe does not yet accumulate oil: it is building cells. Each cell that forms during these weeks represents a potential space for lipid accumulation in the following months. This is why phosphorus becomes a key element: it drives cell division, participates in the synthesis of nucleic acids, supports energy metabolism, and contributes to the formation of the first cell walls. Tel. 045 8678260 @aipoverona Subscribe to the Aipo YouTube channel to stay updated -