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Horse chestnut, diseases and treatments to be allocated to the plant. Effective treatments against defoliation and other information on horse chestnut cultivation.
L'horse chestnut, botanical nameAesculus hippocastanum, is a tree famous for its beneficial properties, for its beautiful foliage and for its flowers and ornamental fruits. Its fruits are round and greenish capsules, equipped with quills and very similar to chestnuts, so much so that they are nicknamedmatte chestnuts! Unlike classic chestnuts, the fruits of horse chestnut are toxic and therefore inedible.
L'horse chestnuthas been making a lot of talk in recent years due to several diseases that afflict this species. The tangible symptom of the diseases ofhorse chestnutand thedefoliationanticipated.
Horse chestnut, diseases
Horse chestnut trees, which should thrive vigorously, begin shedding their leaves as early as July. This problem is affecting many examples ofhorse chestnutsand the causes can be many. The three most common diseases and causes that damage horse chestnut are:
Disease caused by the fungus Guignardia aesculi
The guignardia aesculi fungus causes a disease known asanthracnose which occurs in late spring. The fungus survives in dry leaves, left on the branches or on the ground, so it is necessary to mechanically remove and eliminate the affected and now severed parts of the plant. Guignardia occurs in late spring but when temperatures are still cool and the climate is rainy.
Infestations of Cameraria ohridella
Cameraria ohridella is a moth that, in the larval stage, devours the leaves of the horse chestnut. In the last two decades it has gained fame as the most harmful parasite for horse chestnut, so much so that it is known ashorse chestnut roomira.
Horse chestnut diseases caused by environmental conditions
Climate change as well as the increase in pollution are factors that cause damage tohorse chestnutand other sensitive plants. In particular, the horse chestnut is affected by the lack of rain and the greater impermeability of the soil.
Horse chestnut, care
Thecaremost effective they are kind"natural". As the leaves and dry parts of the plant fall, mechanical removal is required: collect dry leaves and twigs and possibly burn them! Carry out a constant and complete harvest with relative destruction of all the fallen foliage at the foot of the horse chestnut tree. The Guignardia aesculi fungus, which causes the anthracnose ofhorse chestnut, takes refuge and survive in the fallen leaves on the ground and then in the ground. Even the forms of wintering of the insecthorse chestnut roomirathey find refuge in fallen leaves.
In autumn, when thehorse chestnutwill have lost all the leaves, carry out a complete treatment with Bordeaux mixture to be sprayed on all parts of the plant in order to prevent further fungal propagation. Also in autumn, lightly work the soil by moving the entire surface to make it more permeable to water.
Horse chestnut, endotherapyagainst the chamber of commerce
L'endotherapyit is a treatment that is carried out on specimens of particular value. Onhorse chestnut, L'endotherapyit becomes necessary to eliminate theCameraria ohridella, this parasitic insect that causes severe damage to trees.
L'endotherapyis a treatment that consists in injecting into the trunks of diseased trees, a synthetic chemical insecticide specific to the larva to be eliminated (in the case ofhorse chestnut, therefore, specific against the larvae ofchambermaid).
The chemical substance injected into the trunk enters the circulation through the distribution vessels of the same plant and reaches the crown and leaves. Among the advantages there is a persistence of the effect, a targeted and therefore harmful effect only against the larvae of the parasitic moth (chambermaid) and less dispersion of the substance into the environment. Among the disadvantages we see that theendotherapy against the chamber of commerceit must only be performed by expert personnel and therefore labor costs. The best time to perform theendotherapy on horse chestnutcoincide with the end of flowering.
L'endotherapyit turned out to be the only effective treatment: other pesticides distributed on the foliage are not recommended because the horse chestnut has a very developed crown and it is impossible to reach the upper and lower page of each leaf and each branch of the tree.