How to fight gray mold: natural and non-natural remedies to eliminate and prevent botrytis, a disease known as gray mold. Symptoms, causes and treatments.
The plants in our garden unquestionably give a touch of joy and refinement but if they are not cared for properly, they can be prone to diseases. In the worst cases, plant diseases can irreparably compromise plant health.
Among the most common diseases that can indiscriminately attack ornamental plants, fruit plants and horticultural plants, we find the moldgray or botrytis, caused by the fungus "botrytis cinerea".
Botrytis cinerea mushroom, gray mold and noble mold
The mushroom Botrytis cinereait attacks flowers and plants, in particular fruit plants such as vines, strawberries or apple trees, but also more infesting ornamental plants such as petunias, geraniums, hydrangeas, peonies and succulents.
Theregray moldoccurs in correspondence with the ripening of the fruit. In some cases, however, the same fungus can also be talked aboutnoble rot.
In viticulture, when the climate is hot and dry, the fungusbotrytis cinereait cannot find the perfect conditions to proliferate. In practice, infestations are limited by low humidity in the air and the fungus proliferates only in the morning, when there is dew.
Under these conditions, the fungus limits its development and therefore due to its activities increases the sugar content of the grapes without damaging the harvest. This combination of events makes it possible to produce a fortified and sweet wine. In this case, we are talking aboutnoble rotbecause the mushroom doeswither the berriesincreasing the sugar content but without ruining the harvest.
With grapes affected bynoble rotapassito wine(usually white) with an aromatic and particularly sweet flavor.
Unfortunately in most cases there is no talk ofnoble rotbut of oneplant diseaseswhich causes serious damage.
There gray moldin fact, it represents a rather serious problem that is difficult to manage.
Even when plants undergo preventive treatment, the disease can still occur. In addition, if the disease is not treated in a timely manner, there could be serious damage to the crop.
After this necessary premise, let's see how fight gray mold following some useful indications.
Gray mold, symptoms
There gray mold it involves a weakening of leaves and flowers, with the presence of a greyish down, while a whitish mold forms on the fruits.
In severe cases the disease can reach the roots leading to the death of the affected specimens. It is mainly plants and flowers that are already weakened in the presence of a high level of humidity.
There cause of the appearance of the gray mold it is attributable to excessive irrigation of the substrate in spring or autumn or to poor air circulation. There gray moldit is even more frequent for plants grown in greenhouses: plants that are hospitalized in the greenhouse during the winter, where there is a lot of humidity and poor air circulation, could more easily be affected bygray mold.
In the case of hydrangeas and grapevines, thegray moldit can explode due to poor pruning. For the vine, in fact, green pruning is necessary, while the hydrangea must be pruned to allow the filtration of light and especially of the air.
In the case ofgray mold on strawberries, the problem could be induced by the contact between the fruit and the ground. The fungus, in fact, can remain alive in the soil and proliferate when it comes into contact with the fruit and the weather conditions allow it.
Gray mold, prevention
For prevent the appearance of gray mold on plants it is good to follow some periodic precautions:
- monitor plant health
- irrigate without excess preferably in the morning
- keep the plants at a certain distance in order to promote air circulation
- ventilate greenhouses and roofs
- immediately eliminate dry leaves and other withered parts of our ornamental plants
Gray mold, remedies
In case of attack it is good to intervene promptly by eliminating all the moldy parts and spraying the plants with some Bordeaux mixture: the treatment should be repeated approximately every 10 days until the problem is completely resolved.
Bordeaux mixture is a widely used remedy also in biological agriculture for this reason it can be found in any agricultural consortium. Those who prefer to buy and sell online can buy a 1 kg bag of Bordeaux mixture (wettable powder) at the price of 10.90 euros with free shipping. For all information, please refer to product sheets: Bordeaux mixture.
Who seeksremediesmore specific can experience theantibotritis. There are several products against botrytis available on the market. For some it is necessary to have a license (they are pesticides in all respects), while inThis Pageyou can find the antibotritis more widespread on the market and easier to access.