Spring currant treatment for diseases and pests
Currant is perhaps the most popular berry shrub in Russian gardens. High productivity, coupled with the unpretentiousness of care make currant bushes welcome guests in all suburban areas.
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But, at the same time, currants are very often sick and affected by pests. Therefore, you need to regularly process it. In this article, we will talk about the most effective methods of spring spraying currant bushes.
Why is it important to process currants in spring
In winter, all parts of currant bushes (and branches, and buds and roots, and not even fallen leaves) become a refuge for pests. Also, spores of pathogenic fungi winter in the bark and fallen leaves.
So most often the berry shrub suffers from tinnitus, aphids, leafworms, buds and other types of ticks, scale insects, fireworms, sawflies, moths, goldfish, glass-boxes, anthracnose, powdery rose, spotting, various types of rust, terry, etc.
Accordingly, not only currants wake up in the spring, but also parasites, which immediately begin to feed on plant parts and multiply.
Therefore, from the very beginning of the annual vegetation, it is very important to prevent this process and deliver a preventive blow to parasites.
How to choose the right time for spring processing of currants
There are several stages when it is possible to process currants “according to the leaf”.
The first - until the bush awakens. During this period of time scalding is carried out with boiling water, as well as treatment with “heavy” fungicidal and insecticidal agents against fungi and insects hiding for the winter.
Second - "green cone." This is the period when leaflets are just breaking through from the kidneys. Caterpillars, moths, various ticks are destroyed. At the same stage, re-infection is prevented.
Third “The pink bud.” This stage begins just before flowering. During this period, the Bordeaux mixture and other copper-based preparations are treated.
Fourth - after flowering (in some regions this stage is already in summer processing). At this stage, the treatment takes place when the currant is infected with new parasites and diseases.
The time for spraying is selected depending on the purpose of the treatment.
What processing methods are there
You can process the culture with folk remedies (infusions and solutions) and purchased chemicals (insecticides and fungicides).
It is also very important to decide which parts of the plant to spray: buds, branches, roots. To destroy fungal spores, soil treatment is used at all.
For preventive purposes, comprehensive measures are applied, that is, they carry out a complete treatment of each bush, and also spill the soil with a solution of fungicide or potassium permanganate.
Depending on the drug used, the shrub can be sprayed, dusted, coated. It also includes preventive pruning.
The most popular method to treat the plant is spraying, since most of the preparations are a liquid solution.
The greatest effectiveness in the fight against diseases and parasites is shown by chemicals: fungicides and insecticides. Let's consider them in more detail.
How to apply fungicides
Fungicides help in the fight against fungi, bacteria and viruses.
There are a great many fungicidal preparations: Topaz, Fitosporin, Hom, Skor, Abiga-Peak, Rayek, Oksikhom, Prognosis, Tilt, etc.
The most effective remedy is Fitosporin. Its advantage is that with all its gentle effects on the bush, it allows you to get rid of most of the diseases.
Also Fitosporin favorably affects the plant itself. It can be used even during fruit formation. Standards for the preparation of the solution and flow rate of the working fluid are indicated on the packaging.
If the disease is started, then it is necessary to apply more stringent and effective drugs. But they must be used strictly before or after flowering and can not be used if the fruits began to be tied to the bushes.
Currant treatment with insecticides
Insecticides help in the fight against pests. There are intestinal-contact (the most popular means in this category: Actellik, Kinmiks, Fufanon, Profilaktin, etc.) and systemic (most often in this category summer residents buy Confidor, Tanrek, Aktara, Biotlin) drugs.
Insecticides can not be used during the appearance of flowers and the first ovaries, so as not to destroy the bees. For greater effectiveness, it is better to alternate intestinal-contact and systemic insecticides. But too often processing cannot be carried out either, since there is a danger of “burning" the bushes.
How to use tank mixtures
Tank mixes are several mixed pesticides. The advantages of this method are obvious. There is a simultaneous blow to several pests or diseases at once.
IMPORTANT! Before preparing a full tank mixture, you need to make a small solution for the test. Doses should be less. The fact is that some drugs can react.
The following combinations are allowed:
- Lepidocide + Guapsin;
- Guapsin + Actofit;
- Actofit + Bitoxibacillin;
- Aktara + Atk.
IMPORTANT! Previously, before mixing the preparations, study all the information presented on a packet with pesticides. The fact is that some pesticides cannot be mixed.
Processing tank mixtures should be carried out in dry, calm weather. It is not recommended to use more than 3 drugs. The treatment must be carried out using the smallest spray gun so that the solution does not drain to the ground.
How to properly handle
When spraying (or any other method), a number of rules must be observed:
- Observe safety precautions. Use personal protective equipment;
- Dilute the drug in accordance with the instructions;
- Use the drug only within the acceptable time frame for the work;
- Do not use expired chemicals, as well as solutions prepared several days ago;
- Spray in dry and calm weather. It is better when it is cloudy outside, but there is no rain. If the weather is hot, work early in the morning or late in the evening;
- Use warm, settled water;
- Do not use insecticides during flowering;
- Alternate means for greater effect.
How to treat folk remedies
Some summer residents fundamentally do not accept chemical processing, preferring folk recipes. The advantages of such tools are obvious: the absence of harmful substances and the relative cheapness of the components. The main disadvantage is one, but quite significant - this is the low efficiency of treatments with folk remedies.
In early spring, you can irrigate currant bushes with very hot water (almost boiling water). This is a fairly effective method that will destroy pests wintering in currant buds. For details on how to scalding, read our article "When and how to pour currants over boiling water, spring processing."
Garlic infusion for currants
Tincture of garlic does not destroy pests, but only scares them away. It's all about the pungent smell, as well as volatile, which are contained in garlic.
Crush about 0.5 kg of garlic and cover with very hot water. Mix the solution thoroughly and strain. Processing is carried out with cooled water.
Infusion of celandine
Celandine contains a number of acids that are toxic to small insects.
Preparing the solution is very simple. It is necessary to chop several bushes and pour warm water. Insist for half an hour, after which the solution is decanted and treatment is carried out.
IMPORTANT! Processing with celandine should be carried out with gloves.
Ammonia is a fairly effective tool if you need to scare away pests from the bush. Also, ammonia acts as a nitrogen fertilizer.
The proportions for the preparation of the solution are 25 ml of ammonia in 5 liters of water. If an anthill is seen near the currant, then it needs to be destroyed, since the ants breed aphids. You need to use ammonia concentrate: 500 ml per 5 liters of water.
Pay attention to the rules of working with the drug:
- The solution must be developed immediately, as the ammonia is eroded;
- Sanitation should be done in the early morning or late evening;
- Use a nozzle with large openings, as ammonia is a very volatile compound. If you spray too much, the effect will decrease.
What to treat in the spring from a tick
The tick is the main currant enemy. The insect not only causes significant damage to the culture through its actions, but also is a carrier of many different diseases.
Therefore, getting rid of the tick is very important.
The simplest and, at the same time, effective method of combating ticks is scalding the bush with boiling water. But the problem is that you need to water the plants with very hot water until the currants awaken. If the spring happened early, or you have an emergency at work, and you cannot go to the cottage, then skipping time for such processing is very easy.
In this case, you can use chemicals. Most often, colloidal sulfur, Spark, Tiovit Jet, Fufanon, Apollo and Karbofos are used to combat ticks.
If you are not a proponent of chemistry, then you can use recipes for folk remedies. From a tick with varying degrees of effectiveness, an infusion of garlic, a decoction of tobacco and onion husks, urea help.
Copper sulfate is one of the most effective agents against pathogenic fungal microorganisms, but also this drug allows you to fight pests. An additional advantage of using copper sulfate is that the preparation contains compounds useful to the plant.
Spray sulfate solution through the smallest sieve.
IMPORTANT! Spraying with this agent should be carried out before the bush awakens or in late autumn, when the currant falls into hibernation.
In which cases it is impossible to process currants
It is strictly forbidden to treat currant bushes with insecticides and for the most part fungicides during flowering and the formation of the first ovaries.
Firstly, the harsh aroma from the active ingredients can scare away the bees. Secondly, most insecticides also kill beneficial insects.
Also, you can not spray plants during fruiting. In this case, the likelihood of deposition of chemical compounds in the fruit. A person can be poisoned.
An exception is the use of gentle folk preparations.
ON A NOTE. Treatment with boiling water can not be carried out with swollen buds, since it is likely to cause damage to the bush.
Diseases and pests, and their control, table
In the table below we presented data on the main pests and diseases of currant, their manifestations, as well as methods of combating them.
Table. Diseases and pests of currant and methods of dealing with them
|Disease / pest||Signs and Symptoms||Methods of prevention and control|
|Anthracnose||Brown spots. Foliage falling||Removing infected leaves. Handling 3% Bordeaux and Hom|
|Rust||Reddish pads on the back of the sheet||Removing infected leaves. Processing Topaz. Sanitary pruning|
|Ascochitosis||Gray spots in black speck||Spraying Acrobat or Ridomil|
|Powdery mildew||White mold on fruits and leaves||Spraying Topaz and Fundazole|
|Terry||Small terry leaves. Lack of fruit||Burning infected bushes. Preventive treatment by Fufanon or Actellik.|
|Mosaic||Yellowish mosaic spots||Burning infected bushes. Preventive treatment with Fufanon.|
|White spotting||Fine white speck with a black and brown border||Spraying Home, Abiga Peak|
|Kidney tick||Increased kidney size||Scalding with boiling water. Spraying Karbofos|
|Gall aphid||Reddish swellings on the leaves||Trimming infected branches. Spraying Fitoverm|
|Fire||Spider web||Destruction of diseased branches. Lepidocide Treatment|
|Spider mite||Yellowish dots on the leaves. Cobweb on the back of a sheet plate||Fitoverm Processing|
|Shield||Live "growths" on the bark of shoots||Nitrofen Treatment|
Frequently Asked Questions
Do I need to process the currant if it didn’t hurt me?
Preventive spraying with gentle fungicides and insecticides will definitely not harm even healthy bushes.
When to process currants?
Processing is carried out in several stages. You need to start from the very early spring. If the bushes are not running, then 1-2 treatments will be enough.
Which is better, purchased funds or folk?
More effective, of course, are chemicals. If you use them wisely, then there will be no harm to the plants.
What are the most effective drugs?
It all depends on the degree of the disease and the type of pest or disease. But in general, Fitosporin (among fungicides) and Actara (among insecticides) show the greatest effectiveness.
Can I use drugs left over from last year?
Yes, if they did not expire, and they were not exposed to low temperatures.
How to treat currants from improvised products for a quick effect?
Perhaps the solution of ammonia is the best choice. The drug will not only significantly reduce the parasite population, but also saturate the leaves of currant with nitrogen.
Currants must be processed in the spring. Preventive spraying will protect shrubs from most diseases and pests. There are many ways to carry out the procedure, and you just need to choose the right one. In this case, we must not forget about observing the concentration of the active drug and the processing time so as not to harm the plant.