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There peach bubble it's a disease that could affect yours peach tree, and which you should get rid of as soon as possible so as not to definitively affect it state of health of the plant.
But how can you do? We wanted to identify a few below proven, biological techniques is natural, which we want to share with you, in the hope that they will be useful to you!
What is the peach bubble
What is commonly called peach bubble is a fungal disease that affects peaches and nectarines, and which is also often referred to as a leaf curl (or, to use the scientific name for this pathology, Taphrina deformans).
In essence, this is one of the most common disease problems in courtyard orchards, capable of affecting not only the harvest, but also and above all the goodness and health of the entire tree.
Read also: Peach diseases: what they are and how to avoid them
What are the symptoms of peach bubble
But what are the peach bubble symptoms? What are the signs that should make you realize that maybe your tree is about to be affected by the peach bubble?
Let's say that, with some superficial and understanding considerations, the main symptoms appear in spring, and are generally represented by the appearance of reddish areas on the developing leaves. These areas become thick and wrinkle, causing the leaves to curl and distort. When it arrives in a state of greater gravity, the curling of the leaves can substantially reduce fruit production.
Pathogenic fungi overwinter like spores (conidia) under the bark, around the buds and in other protected areas. At the beginning of the growing season, during the cool and humid spring weather, the spores infect the new leaves that emerge from the buds. Later, the fungus produces a large number of new spores that are sprayed or blown from tree to tree.
The peach bubble is more common when the temperatures they are on average high but, unfortunately, it can also occur a relatively low temperatures. And, indeed, cool weather is thought to extend the infection period because the new leaves grow slowly. Humid weather is however one of the major risk factors for contracting infection.
How to remedy the peach bubble
But how can the peach bubble be remedied, and thus try to restore a new well-being to your tree?
In general, the peach bubble can be controlled by applying sulfur-based fungicides o copper, labeled for use on peaches and nectarines. Spray the entire tree after 90% of the leaves have fallen in autumn and again in early spring, just before the buds open. For best results, trees should be sprayed to the point of runoff or until they begin to drip.
For best results, it would also be necessary to cover both the top and bottom of the leaves with a thin, even layer of the fungicide. Depending on the density of foliage and the characteristics of your tree, applications will be necessary every 7-10 days.
Among other tips to avoid major problems with your peach tree, we also remember to keep the soil under the trees raked and clean, especially during the winter months.
Destroying the infected plant parts will avoid limiting the risk of the infection spreading.
And if the problems of the disease are serious, a full-bodied pruning, the application of specific care products, for example high content of sulfur, and regular watering (avoiding wetting the leaves, if possible), should give the right support.
Biological aspects of the peach bubble
Some details of the life cycle of the fungus which generates the peach bubble remain unclear. It overwinters inside the buds in a saprophytic state, similar to that of yeasts (it feeds very little and with non-living material). When the buds break, the fungus is then able to penetrate the leaf tissue, causing a massive distortion known as hypertrophy (swelling and distortion) without killing the leaf tissue. It then produces a spore bloom on the infected leaves. These settle in cracks in the bark and buds, forming the wintering yeast state that persists until the following spring.
The tree can produce a second stream of leaves to replace fallen and infected leaves, but these will not be reinfected by the fungus. Humid conditions are still necessary for spring infections to occur.
Once the tree is infected with the peach bubble, in reality there is not much that can be done to get rid of the disease in the same season in which it appeared. But it is very important to maintain the vigor of the tree throughout the part of active growth.
Therefore, it is better to dilute the fruits to reduce the resource demand of the trees. For peaches and nectarines, the fruits must therefore be more spaced than usual. Remove diseased or cracked fruits and place them in the trash, not the compost pile.
Nitrogen fertilizer by mid-June, using a good balanced fruit tree fertilizer. Keep the plant regularly watered to reduce water stress.
Clean the fallen leaves or fruit around the base of the tree to reduce spread to other trees. Do not put them in the compost heap, because the spores can remain inactive for some time.
We hope these tips will be helpful to you in improving the health of your peach tree. For more information, we naturally recommend that you seek advice from a good gardener.