Olive tree diseases

Diseases of the olive tree

If you want to minimize the danger of adversity and diseases for the olive tree, it is necessary and basic to favor the ventilation and insolation of the vegetation. This is possible thanks to an adequate pruning, which allows to resize the branching of the plant, favoring the recirculation of air and is also useful for removing the parts that already present diseases. Subsequently, it is essential to destroy the removed parts with fire, thus ensuring the removal of any parasites. To complete the care of the plant, it is useful to periodically spray it with propolis, which acts as a natural disinfectant, moreover every eight years it is advisable to brush the olive tree with Bordeaux mixture. Humidity and other climatic adversities, such as wind, hail,

Cryptogamic diseases

This term indicates diseases due to the presence of fungi on the plant’s vegetation. Among this we can find, for example, the caries, which mainly affects the trunk and large branches. It makes the affected wood soaked, very spongy and of a yellowish color, it will be necessary at the end of winter to scrape the diseased part until it reaches the healthy layer below. Another disease is the so-called fumaggine, it creates a gray-black encrustation on the surface of the plant and is particularly favored by fairly high temperatures. For this reason it is much more developed in the regions of Southern Italy. The hot climate also favors the development of leprosy, it manifests itself with large and rounded spots with the presence of chalky and brown pustules.

Peacock eye and plumbing

A very particular disease of the olive tree is certainly the peacock eye or smallpox, which manifests itself with concentric circles of dark yellow color, which recall the eye present on the peacock’s feather. The pathogen also affects twigs and fruits and is able to stay alive on diseased leaves, whether they are on the ground or still on the plant. It develops where the soil is clayey, with a fairly humid climate and which remains so for a prolonged period. With treatments based on copper and Bordeaux mixture it is possible to cure it, however it is able to cause significant problems especially in young plants, this is because it causes an important fall of leaves. The plumbing looks like a lead-colored moussa,

Olive tree diseases: Phytophages

The term phytophagous indicates all the animal parasites that can infest the plant. These organisms feed on the contents of individual cells, eroding portions of the olive tree tissue. One of these is the black cochineal, a parasite similar to the peppercorn that produces direct damage on branches and leaves, causing plant decay and poor fruiting. It grows mainly in poorly cared for olive groves, where, for example, adequate pruning has not been carried out for a long time. Another parasite is the fleotribo, a beetle that digs real tunnels inside the wood. Once spring has arrived, it leaves the plant, however, causing the branch to dry out. The leaves and olives fall off and do not produce a good product. To defend the plant it is necessary to increase its defenses,

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