Rust on roses
Rust on roses: rust in a nutshell
Rust on roses photo
Rust on roses is a very dangerous and destructive disease that is rather difficult to treat. Rose rust is a fungal disease, and you can never be one hundred percent sure that it has passed. The likelihood of this disease must be monitored from the moment the plant is purchased.
Rust on roses: how the disease manifests itself
Everyone can find out this disease, even not experienced gardeners. Unfortunately, almost all garden and plant lovers encounter it. If you suddenly saw yellow-orange spots on your plant, not large, as if from a sprinkling, then you can be sure that rust on the buds of roses has come to you.
Infected shoots begin to crack, which will certainly lead to the death of the culture. Spots can form not only on shoots, but also on foliage and inflorescences. But it always takes its way from the shoots. It is important not to miss the initial infection period. Usually, this disease begins to show its activity on the tenth of the first month of the summer period. Towards the end of August, the spots change their color to a deep brown hue. This color means that the disease has firmly settled on your plant and next year will again take up its destructive work. Its spread is quite fast.
There are two ways of distribution:
- By air routes;
- With the help of insect pests.
Also, excellent conditions for the reproduction of this disease are:
- Excessively high air humidity;
- Rainy summer season;
- Low content of nitrogenous elements in the soil. Not only the affected plant will suffer from this disease, but also the growing crops nearby.
Rust on roses: why and why is it so dangerous
The disease is in the form of rust, carried by fungi from the genus Phragmidium disciflorum. It is they who serve as the main causative agent of the fungus. If during the time you do not notice the disease, or do not remember about the treatment, then it will destroy the initial plant and spread to the entire garden. That is why you need to start fighting it right away.
How does the disease develop and can be treated
When the spore of the fungus enters the outer part of the culture, it begins to actively penetrate into the tissues of the plant itself and spread exponentially, thereby forming a mycelium. It is almost impossible to cure with contact means. We need drugs that can penetrate deep into the culture and suppress the development of the fungus on the vine.
Rust on roses: signs of disease
Initial signs can be seen as the summer season approaches. Summer spores are fluffy, reddish-colored formations found on the stems and lower parts of the foliage.
Closer in the autumn period, winter disputes can also be observed. They manifest themselves in large spots, black in color. The plant begins to shed foliage, the stems deform and become crooked. The circulation of nutritious juice stops, and naturally it stops flowing to the buds and already opened flowers. Everything gradually begins to perish. All this is evidence that rust has appeared on the leaves of the rose. It is very important to take action right away and not wait.
Rust on roses: steps to take first
As soon as you notice this disease, you need to immediately destroy the infected shoots. No need to regret, you need to cut, as you can lower. This is very important and the plant will thank you. The foliage that has fallen must be collected. The topmost earthen layer must be carefully removed. You cannot transfer it to the compost heap, it contains spores of the fungus, and when you use compost as fertilizer, there is a great risk of the disease reoccurring. The land just needs to be removed from your site. You can collect foliage and earth in a bag and burn it all.
What else needs to be done:
- Before the beginning of spring, absolutely all the stems, as well as the soil space around the plant, must be sprayed with a fungicidal solution that contains copper, with a concentration of one percent;
- With the arrival of the autumn period, you need to carry out another spraying. You can use a solution of ferrous sulfate with a concentration of three percent;
- During the summer period, you need to carry out two spraying procedures. The first before flowering, and the second time after. In this case, you can use a solution from Bordeaux liquid.
If you hesitate, be lazy and hope that everything will pass by itself, or you will regret cutting off the shoots, then you risk losing your bush, and subsequently the whole garden. All rescue activities must be carried out in a timely manner.
Rust on roses: how to treat? Traditional methods
A large percentage of garden lovers are against the use of chemicals in their summer cottage. They adhere to agriculture based on organic matter, biological preparations and recipes that the people came up with.
Yes, there are folk methods, but unfortunately, they are effective only for prevention, it is impossible to cure a plant with their help. As a treatment. Only fungicidal chemicals help. Of course, organic products have their advantages. They cannot have a detrimental effect on a person, as well as develop an allergic reaction.
Organic preparations will help to strengthen the immune system of the culture. Which is naturally very important, because then, the plant will be more resistant to various diseases and insect pests. Rust will not attack a healthy and robust plant. In addition, if you skillfully combine drugs on different bases (chemical and organic), then they can easily help to overcome the disease at an early stage of its development.
So, how to spray roses from rust? There are several highly productive and effective folk recipes.
Rust stains on roses: treatment based on nettle infusion
Everything in order:
- You need to collect a whole ten-liter bucket - nettles. You need to stuff right to the very edge;
- So that later it is not difficult to filter and filter, nettles can be immediately placed in a gauze bag, or in old nylon tights;
- Pour in clean, warm water;
- Put in a sunny and warm place so that the mixture can brew. For this process, you will have to allocate ten to fifteen days;
- To provide the necessary air circulation, the solution must be periodically stirred and monitored for the fermentation process;
- The readiness of the solution can be recognized by the presence of bubbles on its surface. If they are not there, then the mixture-solution is completely ready for use. Use it can be two ways:
- For root watering: one liter of solution for nine liters of clean water;
- For the spraying process: One liter of solution for nineteen liters of clean water.
Second recipe based on wormwood solution
How to cook:
- You need to take a suitable container made of wood, for example: a barrel;
- Prepare old, unnecessary, nylon tights. Place four hundred grams of wormwood in them;
- Put a nylon bag with grass in a barrel, pour the whole thing with warm, clean water;
- Find a warm, sunny place, put a container there. For about ten to fourteen days, the solution will ferment;
- After two weeks, the infusion will be ready to use.
A solution from such an infusion can be used for spraying bushes. One liter of the tincture must be mixed with nine liters of clean water. And you can start spraying.
And if, for example, you let the mixture infuse not ten to fourteen days, but only three days, then the tool can be used without even diluting it. The concentration will not be harmful to plants. But when used there, it will be less effective and will dry out faster. He also copes well with insect pests in the form of aphids and caterpillars, because they are the main carriers of fungal infections and spores.
Rust on roses: treatment with tea drink and vodka
How to cook:
- You need to take one liter of clean water;
- Add two teaspoons of tea to it. Before adding, be sure to brew the tea with boiling water;
- Then pour in three teaspoons of vodka. For greater effectiveness, a growth-promoting drug called epin can be added. Then mix everything well. Then you can start the process of spraying the bushes.
Some gardeners argue that you can simply sprinkle the plants with pure vodka, which will also have a positive effect.
The fourth recipe based on baby or laundry soap
How to cook:
- You need to prepare a clean bucket with a volume of ten liters;
- Two pieces of baby or household soap, you need to grate with a fine grater;
- Then the resulting mass, stir in hot, clean water;
- Let the solution cool;
- Infuse the solution for twenty four hours. As soon as the day has passed, you can start the spraying process. Such an infusion is able to protect the plant from damage to certain diseases and insect pests. It can also be applied alternately with nettle or wormwood infusion.
Rust on roses: control measures with fungicides
If a fungal infection nevertheless struck your plant, then you can see its course only by the appearance of the plant. But unfortunately, we see only the top, all the destructive power lurks inside the flower. Folk remedies on organic matter will no longer help here. After all, such methods are good only for preventive purposes, or slow down its development a little, and also help in protecting neighboring plants. Chemical fungicides should be purchased to kill fungal spores. The name of these funds is carried out from Latin, as killing a fungus.
Briefly about fungicides
Fungicidal drugs are those agents that can act both locally and systemically. Preparations that work locally, have an effect only on the upper parts of the plant.And drugs that work systemically will penetrate into the very depths of the plant. To destroy the fungus and its spores, you will have to use those drugs that act systemically. But you can not take all fungicides, some may not work. There is a list of the most effective and efficient fungicides in the fight against rust on crops.
The first remedy is the falcon
This is the most popular remedy for fungal growth. It can fight both individual types of fungus and mixed infections. For example, it copes well with paired diseases in the form of rust and septoria. After all, it contains three substances that are different in action and effect. It is they who will hinder the development of resistance in fungal spores to this agent. But it also has a minus, it is produced in a container that is not very convenient in terms of volume, in as many as five liters. You can purchase a smaller volume, but you will have to try to do this. You can start using it at any stage of the disease.
It can be used both on inflorescences and on formed buds.
For preventive purposes, you need to dilute five milliliters of the drug in ten liters of clean water. For such purposes, you need to carry out only two treatments with a difference of twenty-five to thirty days.
For medicinal purposes, you need to dilute ten milliliters of the drug in ten liters of pure water. In this case, all affected foliage and stems must be destroyed. And shed the space around the plant with a solution, and also spray the culture itself. After ten to fourteen days, you need to re-process.
The second remedy is strobe
Strobi is a chemical from the strobilurin group. Since fungal spores often begin to develop resistance to it, after using it, the plant must also be treated with a drug from another chemical group, for example, topsin from the carbamyte group.
When using, you need to carefully follow the instructions. It is necessary to process every ten days, three times, with each use, the concentration must be reduced by two percent. For use, mix four grams of the product with ten liters of water.
The third remedy is Bordeaux liquid
This preparation contains copper in high concentration, so it is necessary to make a solution of one percent. You need to mix ten grams of the drug with ten liters of clean water. You need to use only twice with an interval of ten to fifteen days.
The fourth remedy is topaz
It is a chemical from the triazole group. The main active ingredient in the composition is penconazole. It is released in liquid form. It can be purchased in bottles or ampoules. To get rid of rust, you need to mix four milliliters of the drug with ten liters of water. Initially, you need to mix it with less water, and only then bring it to ten liters. You need to use it right away. You cannot store it, because it will lose its properties.
Rust on roses: what actions can be taken to prevent the appearance
Of course, there is no way to provide one hundred percent protection. But any infection will cling to a weakened plant, and not to a healthy and strong one. The main task is - high immunity of the plant. And for the plant to be healthy, it needs to be provided with comfortable living conditions.
Rust on roses: regular crop inspection
Throughout the growing season, the plant must be examined very carefully. Particular attention should be paid to the shoots and the back of the foliage. Initially, rust can be recognized by loose piles of orange hue. If the spots are already brown and black, then this means that the fungus has already completely settled and the initial development has been missed.
Also, when examining, you need to look closely at the presence of pests.
It is very important that there are no colonies on the plant:
- Spider mite;
- Leaf rollers;
All of them are dangerous carriers of fungal infections. They can also contribute to the infection of other plants in the neighborhood. Although a rose has thorns, it is still not poisonous, which is why insect pests come to the feast from its foliage. But you can spoil their meal and make their food unsuitable for consumption, with the help of an infusion of wormwood or nettle.
Timely watering and feeding of plants against rust on a rose bush
The rose just needs proper watering and suitable feeding. But here you need to know all the tricks. If there is not enough water, that feeding cannot be completely absorbed by the plant and will not give the desired effect. After all, watering and feeding are closely related to each other.
Before applying top dressing, watering is a mandatory procedure. At the initial growing season, the rose is in dire need of regular watering and feeding. It is at this time that the most active growth and development of stems and leaves takes place, buds set in, and flowering also begins. And already in the second half of the summer period, the plant's need for moisture gradually begins to decrease. And before preparing for the winter period, the frequency and volume of watering will need to be increased.
Water for irrigation must meet certain criteria, it must be: 1) Settled; 2) Rain; 3) Warmed in the sun. Watering is not necessary very often, but quite abundantly. Each bush requires a minimum of a bucket of water. The larger the culture, the more liquid it needs to excrete. At the end of summer, you can limit yourself to half a bucket of water. And in preparation for the winter period, you need to pour out about three buckets.
How to fertilize and feed
In just one season, the rose needs three obligatory dressings. And before the winter period, you need to properly feed with Kalimangesia, and also carry out the mulching procedure with organic compost.
You need to start feeding in the middle of the spring. Just before a period of active growth and development of stems and foliage. For this case, universal complex mineral fertilizers for flowering crops with a predominance of nitrogenous and phosphorite elements are perfect.
It is carried out at the time of bud formation. At this point, the proportion of nitrogenous elements must be reduced. And to focus on fertilizers with potassium and phosphate substances.
It is applied when the plant finishes its first flowering. In this case, nitrogenous elements are not needed. Required - phosphorite and potassium elements.
Fungicides for rose rust
If the plants are healthy and strong, then these remedies do not need to be used too often. They have a detrimental effect on the soil, pollinating insects and the environment in general.
In the summer season, you can use biofingucind preparations against rust on roses, for example:
They must be used strictly in accordance with the attached instructions. But it is important to remember that phytosporin will not have an effect at too low temperatures; you can resort to using it only in the summer.
Also for preventive purposes, it is recommended to use a copper-containing fungicide. Such processing must be carried out once a season. The best time to use is the twentieth of the last month of summer, just before rain and frost. Indeed, it is during this period that the conditions become as comfortable as possible for various diseases. You can also carry out the treatment with Bordeaux solution, the concentration should be one percent.
Disinfection of working tools
When you start pruning your crops in season, keep your tool clean and sharp. Therefore, it needs to be disinfected.After all, various spores, viruses and infections conceived remain on the thread of the tool used. And if, after pruning the affected bush, you start pruning a healthy one, it can also be infected, because all spores and infections will be transferred to it.
There are no strict requirements for instrument disinfection. Every gardener uses what he likes and the most affordable.
- Potassium permanganate, it must be mixed until the solution darkens;
- Iron vitriol, the solution with it must contain a concentration of ten percent;
- With the help of kerosene;
- Any household chemicals that contain bleach;
- Any drugs and substances that contain alcohol, for example, it can be vodka;
- Rust control on roses can also be done with pharmaco. It is an iodide complex that can be diluted with water. It has a surfactant.
Timely autumn pruning, destruction of dry foliage and digging of soil
With the arrival of the autumn period, the bush must be prepared for future wintering. Indeed, in no case should it be allowed that old, fallen leaves become a covering material for various insect pests and various infections.
After you are done with the fall pruning, all the cut parts of the plant should be collected and burned just in case. And dig up the ground cover around the bush. Such a procedure will help in getting rid of the rose sawfly. And also the false caterpillar will not withstand digging, because it will be on the surface and will simply die from the cold.
Rust on roses: a selection of varieties that are highly resistant to rust
Breeders have already managed to breed rose varieties that are distinguished by their high resistance to rust, as well as to many fungal infections.
But it should be remembered that a rose that will be resistant to diseases will also lose a little in its decorative effect. Its flowers will be less double, the color will be less intense, and the smell will be less intense. But even when buying such a variety, one cannot be one hundred percent sure that it will not be affected by any diseases. And preventive measures will still have to be carried out.
But if you nevertheless decided to take a risk and acquire a rose resistant to fungal infection, then you should pay attention to the presence of these letters in the name "ADR" - it stands for "Anerkannte Deutsche Rose", which translates as a recognized German rose. This is a sign of quality, because such roses go through special and tough selection stages. They are perfect for cultivation in the middle sex.
For example, you can pay attention to these varieties:
- Hybrid tea roses;
- Floribunda roses;
- Roses with stripes;
- Climbing roses.
In fact, rust on rose leaves is not the only threat. But you can cope with it at the initial stage, if you find it in time. If the development has already gone deeper, then you will have to resort to chemicals. It is very important to carry out prevention and provide the plant with comfortable living conditions.