The cherry tree is a widespread plant in Italy. With tasty fruits that develop in a relatively short period of time, it has an attractive appearance and, for this very reason, not infrequently graces parks and gardens with its shades of pink.
However, the beauty of the cherry tree should not overshadow the importance of taking proper care of this delicate and fragile plant. It follows that in order to have the juicy, red and tasty fruits we all aspire to, it is good to put a great deal of attention on its health conditions well before flowering, choosing first of all a soil suitable for the cherry tree, the best climate to carry out interventions, and constant action against pests that could promote the onset of cherry tree diseases, even serious ones.
All that being said, in the next few lines we will try to summarize what the main diseases of the cherry tree are, what precautions to follow if you want to plant a cherry tree, and how to improve the production of its fruit.
What are the main diseases of cherry tree
Let’s start right away with the negative news: unfortunately, the cherry tree can be affected by numerous diseases that can seriously threaten its survival.
However, there is no need to despair. In fact, as we shall see, there is much we can do to treat these diseases and, more importantly, prevent them.
Recognizing and combating cherry tree monilia
Most infections that develop on the cherry tree are caused by fungi. It is precisely for this reason that a good farmer should try to prevent and treat cherry tree diseases starting from the very analysis of early signs of fungal infection and, especially, the prevention of spores that can expand the disease.
In this area, one of the most well-known, recognizable and widespread diseases in Italy is cherry tree monilia, which, moreover, also occurs on other tasty-fruiting plants, which we have recently discussed, such as peach trees.
Provoked by two different agents(Monilia laxa and Monilia frutigena), it is favored by the presence of particularly moist soil, poor pruning that prevents proper aeration, and low attention to disinfection. Also for these reasons, the most dangerous time for the development of this disease is spring, when temperatures begin to rise and irrigation can be more abundant: factors that cause dangerous accumulations of liquid and stagnation to form, which in turn are ideal conditions for the fungus to proliferate.
To realize that the disease that has affected our cherry tree is indeed monilia, it is essential to pay attention to its signs. In particular, the leaves, flowers and fruit tend to suddenly become darker, as if covered by a
gray mold
thick and compact, which tends to rot them from the outside inward, eventually leading to their fall.
Instead, the branches appear dry, with the presence of a few cracks, a clear indication of the disease: in these cracks the spores are able to proliferate and, moreover, encourage the nesting of other problems, such as bacterial ones.
For these reasons, too, it is a good idea to put the proper focus back on changing weather conditions. If the spring season is very rainy and temperatures are higher than average, it is a good idea to act early and apply natural sulfur solutions to the cherry tree to promote action against fungi.
It is also advisable to prune dry parts or those on which abnormal signs are noticed, to stop the process and prevent spores from colonizing healthy parts.
How to fight cherry tree coryneus
Another disease that can affect the cherry tree is cherry blight, commonly referred to as balling-a name that is certainly not accidental, indicating that the disease manifests itself with small spots that tend to affect every part of the plant, starting with the leaves.
Because of this development, cherry blight is often referred to as the most frequent leaf disease of the cherry tree, although – unfortunately – it is wrong to think that the contagion stops only at this part of the plant: in fact, the pathology can spread not only to the entire surface of the leaves, but also affect the fruits, which perish and fall from the plant. As far as can be guessed, cherries that are affected by coryneus, and that show the typical encrustations of the disease – become incommestible.
Given that this is a widespread cherry tree disease, it is easy to find specific solutions on the market that are useful in eradicating it. Although the formulations may differ, they all contain disinfectant agents that should be sprayed on the entire surface and, with particular care, on that of the pruning cut, which is the place where cherry blight infections develop most rapidly.
The pitfalls of bacterial cancer
In this unenviable list, bacterial canker constitutes one of the most insidious enemies for cherry trees. Unlike other diseases caused by fungi, this disease is caused by bacteria that mainly attack stone fruit, gradually compromising the health of the entire tree.
The degenerative process begins at the ends of the branches and proceeds rapidly to the trunk and root system. The warning signs are mainly the presence of irregular dark spots on the foliage, surrounded by light halos, and necrotic areas affecting the wood of branches and trunk.
The different causes of rot in the cherry tree
A particularly long-standing problem for farmers, then, is rot in the cherry tree, which can result from two main causes. The first is related to overwatering: when the soil is already naturally moist and receives too much irrigation, stagnation is created that compromises the root system, extending the damage toward the aerial part. The second cause is fungal in nature. In this case, treatment involves the use of sulfur products and other compounds with antiseptic and antibacterial properties.
Prevention requires careful attention to soil management, calibrated irrigation according to weather conditions, and targeted pruning to remove damaged or dry parts.
Fog, or leaf dryness
Haze is a summer disease that is all too often misunderstood: many mistakenly attribute it to drought, when in fact it is caused by the fungus Gnomonia erythrostoma. Obviously, correct recognition of the disease is critical for timely intervention.
Characteristic symptoms include yellowish patches with reddish edges that gradually darken as necrosis progresses. Affected leaves dry up and fall off, thus leaving the plant partially bare and unable to feed on solar energy.
Effective treatment involves the application of products containing sulfur or copper to block the spread of spores, accompanied by removal of compromised parts to prevent further infection.
The attack of rust
Cherry blight initially presents symptoms similar to haze, manifesting as brownish spots on the upper page of leaves. The areas affected by the spots gradually expand and darken until the leaf tissue dies.
The infection then subsequently spreads to the branches, preventing shoot development and compromising fruiting. The characteristic whitish pustules that accompany this condition can be counteracted with copper-based sprays, enhanced by the addition of sulfur for stronger action.
The black aphid, a not-so-discreet enemy
We conclude this list with the black aphid infestation is easily recognized by the presence of small dark insects visible to the naked eye. The pests pierce the shoots to feed, simultaneously depositing numerous eggs that give rise to new generations.
Massive attack can quickly lead to tree death, producing small, misshapen and inedible fruit. Intervention must be immediate, using specific insecticides or resorting to professional pest control treatments. The risk is also high for surrounding plants, making constant monitoring of the entire crop necessary.
How to prevent and treat cherry tree diseases
As we anticipated in the opening of this in-depth study, it is certainly not impossible to prevent and treat the main diseases of cherry trees.
Let’s start with choosing the variety best suited to your soil. Indeed, not all types of cherry trees are adapted to the same environments: some varieties show greater resistance, while others require specific climate and soil conditions. For those who have chosen organic cultivation, old varieties on free rootstock certainly offer considerable advantages, allowing the exclusive use of natural treatments. Those who have experience and prefer traditional methods can instead try their hand at more delicate and modern species.
Another recommendation is pruning, an activity that requires special attention not only to technique but also to health aspects. In fact, every cut can become a pathway for infection if not done correctly.
Remember that the main objective of pruning is to ensure adequate aeration of the canopy by removing dry and intertwined branches that promote moisture accumulation. Disinfection of tools is essential, especially in the presence of bacterial cancer, as pathogenic microorganisms can survive on metal surfaces. After any removal of diseased parts, it is essential to remove infected plant material immediately to prevent the dispersal of spores into the surrounding environment.
Again, we emphasize how proper fertilization not only promotes plant development but also provides a natural barrier against many diseases. Annual application of pelleted manure under the canopy provides the necessary nutrients while maintaining soil balance. However, it is essential to avoid excesses: a disproportionate supply of nutrients can be counterproductive, promoting rot phenomena.
Finally, for those who prefer to avoid synthetic chemicals, there are several effective natural alternatives. Plant macerates strengthen the plant’s natural defenses, while specific treatments create a protective barrier on the most vulnerable surfaces. Bordeaux mixture, applied during the dormant period, takes advantage of copper’s properties to fight bacterial and fungal infections. Calcium polysulfide represents another biological solution valued for its disinfectant action that does not alter plant structure, preventing both internal rot and desiccation of aerial parts.
Plantvoice, new technologies to prevent cherry tree diseases
In addition to this, today fortunately, the agricultural sector can rely on advanced technological solutions to effectively prevent cherry diseases, including bacterial canker and other common diseases: innovative tools that anticipate phytosanitary problems and optimize orchard productivity.
Among the most promising solutions we obviously find our ecosystem
Plantvoice
, an innovative technology that enables continuous monitoring of plant sap, providing farmers with accurate indications for optimal use of water, fertilizers and plant protection products, thus ensuring better health of fruit trees.
Plantvoice technology is distinguished by its discretion and reliability. The system integrates a minimally invasive biocompatible sensor that is placed in the trunk of the tree, allowing constant monitoring of salt concentration and sap movement.
The device transmits the collected information to a software platform with artificial intelligence, which processes the data through sophisticated algorithms in a cloud environment. In this way, the process not only identifies early signs of water shortage before they reach critical levels, but also recognizes early onset of fungal, bacterial and other harmful microorganism infections, significantly decreasing the danger of epidemic spread. In addition, Plantvoice evaluates the effectiveness of applied treatments, optimizing orchard health management.
The operation of this cherry tree disease control technology is easy to understand. Indeed, the basic steps of our process include:
- reading the QR code via smartphone to access the data on the Plantvoice app;
- the positioning of the detector in the reference tree, followed by app activation and configuration of your system;
- consultation of the control panel to view and administer their crops;
- using the app to supervise the orchard or receive alerts regarding health conditions and plant needs;
- transmission by the sensor of an instantaneous sap analysis to the application, enabling monitoring of plant welfare and informed tree care decisions.
For more information and to request a free demo, you can click here!
