Olive Periodical April 11, 2025 скачать в хорошем качестве

Olive Periodical April 11, 2025

Subscribe to the Aipo YouTube channel to stay up to date Phenological phase: vegetative recovery, with slow growth of the apical and lateral shoots of the olive trees. Although the olive groves are in a good general vegetative state, the growth activity of the plants is slower than last season, attributable to lower temperatures in March and the first half of April. This slowdown is significant in view of the crucial phases of flowering and fruit setting. Agronomic actions To promote vegetative recovery and support the plant in the critical phases, it is essential to complete, where not already done, the fertilization of the soil with nitrogen products. These are essential to support the plant during the delicate phases of flowering, fruit setting and ripening. It is also advisable to integrate the treatment with foliar fertilizations, particularly useful for compensating for any deficiencies of microelements, such as boron, manganese and zinc, to make up for temporary deficiencies of macroelements, such as nitrogen, phosphorus and potassium, to provide nutrients quickly and effectively, thanks to their rapid assimilation and translocation, with particular reference to nitrogen, phosphorus-potassium and organic fertilizers associated with microelements. Phytosanitary defense Olive fly (Bactrocera oleae): recent monitoring indicates the presence of adults on the traps. For those who use long-lasting traps, 180 days, it is advisable to implement their positioning. Olive moth (Prays oleae): this week the monitoring of the first "anthophagous" generation with attractive traps begins. Midget (Dasyneura oleae): from the control of visible galls on the leaves, limited infestations emerged, with the presence of some parasitizations by natural antagonist insects, mainly Hymenoptera. The females of these Hymenoptera actively search for leaves with galls containing the Midget larvae, in which they lay their egg. The egg develops by feeding on the Midget larva, leading to its death. Brown stink bug (Halymorpha halys): the adults have left the wintering sites and are moving towards the trees. At the moment, no control actions are necessary. Fungal parasites The dry seasonal trend this year has limited the risk of infections by fungal parasites, however, at the end of pruning, a disinfectant treatment with copper products or Dodine is recommended to protect the wounds and prevent future infections. Olive leaf scab (Speudomonas savastanoi): in the case of plants damaged by Olive leaf scab, it may be useful to distribute resistance-inducing fertilizers containing microelements such as zinc and copper. Natural corroborants, including oily propolis, wood distillate or algae-based compounds, can also limit the formation of new infections and promote plant recovery. Olive leaf scab: biology, impact and control strategies in olive groves The olive leaf scab, or olive leaf moth, Palpita unionalis, is defined as an "emerging lepidopteran" due to the significant increase in its impact on olive growing in recent years. This change is attributable to a combination of environmental and agronomic factors. Climate change, such as milder winters and warmer summers, has favored the proliferation of the lepidopteran, expanding its range in previously less affected regions. Furthermore, the progressive disappearance of some organophosphate insecticides has limited direct chemical control, opening spaces for a greater presence of this pest. It is important to note that the emergence of Margaronia is not uniform in all olive-growing areas, but varies according to local factors such as climate, agronomic practices and the presence of beneficial entomofauna. For example, regions with higher temperatures and agricultural management less attentive to biological diversity show more significant infestations, while areas with a greater presence of natural enemies, such as Braconids and Tachinids, record a more limited impact. Tachinids are dipterans, small flies, that deposit eggs on the body surface of the larva or adult insect of Margaronia. When the eggs hatch, the newly born larvae penetrate the body of the host to feed on its tissues from the inside, acting as endoparasitoids. Braconids, on the other hand, are hymenopterans, similar to wasps, they lay their eggs directly inside the larvae of other insects, such as those of the Margaronia. Once the eggs hatch, the Braconid larvae begin to develop inside the host, feeding on its tissues, and often leading to its death. Complete review at www.aipoverona.it - ​​SERVICES Tel. 045 8678260 @aipoverona Subscribe to the Aipo YouTube channel to stay up to date