Black cancer in trees - measures and methods of struggle
Black tree cancer - how to fight?
At us from black cancer the beloved apple tree was lost. At first, the branches ached, I cut them and burned them, and then the disease passed to the trunk. Now I'm afraid for other trees. Is there any remedy against black cancer?
Lidiya Semenova, Moscow
See also: Treatment and spraying of the garden from pests and diseases
Help copper and iodine
Valery Zakotin, Candidate of Agricultural Sciences. P.:
Wounds are cleaned to healthy tissues, disinfected with copper preparations (copper sulfate, Azafos, Topsin M, Fundazol, Skor, etc.) and painted over with oil paint or garden varnish (Fig. 2 and 3). Amateur gardeners disinfect wounds with a 5% solution of iodine or creosine.
The best time to treat is early spring or late fall. In spring, trees are treated with copper sulphate or copper chloride.
Black cancer is not a sentence
Sergey Pashayev, summer resident with 20-year experience:
It has long been known that by injecting a solution of salt or simply sea water inside a drying tree, it can be revived. Infected with black cancer tree with its help, too, can be revived. This is like setting the patient a dropper.
For this, we need a conventional drill with a wood drill. We do two or three holes at different heights to the middle of the trunk, to the very core. We insert into the hole a rubber tube (for the same medical system or cocktail). Above the trunk, we hang a vessel (you can use an ordinary plastic bottle) with sea water.
It is sold in pharmacies. We connect the rubber tube with a plastic bottle. Salt water tree will absorb slowly, like a patient who has been given a dropper.
There is a hope that fresh shoots will go. And your tree will blossom again, and will fertilize.
You can try another way. Try to clean the trunk or branch and lubricate with a solution of copper sulfate.
Reference by topic: Recipes for the preparation of solutions for spraying the garden from diseases and pests
TWO CANCER TYPES
This disease develops in neglected plantations with poor care.
Development of the disease is facilitated by:
- mechanical damage,
- long non-healing sections after trimming in the absence or weak processing of plantings with fungicides.
Trees, especially the apple tree, are affected by two types of cancer - black cancer (Anton fire) and ordinary (or European) cancer. The disease occurs mainly on the trunk and branches (Fig. 1).
When black cancer affects the branches, reddish-brown drooping round spots are formed first. Then the bark turns black, as if charred, which is why the name Antonov was called fire. Then it begins to crumble and crumbles into a powder.
Affected by common cancer areas of the cortex, unlike the black cancer, do not crumble, but mochalas and form an influx along the edge of the wound. Young tissues of such influxes are destroyed under the influence of frosts, saprophytic fungi. And the wound will not overgrow, and from year to year only increase in size.
Magic tablets do not happen
The recipe from antiquity says: “... for 12 pounds of iron sulfate is taken a glass of sulfuric acid and 8 buckets of water. Vitriol is poured into a clay vessel with sulfuric acid, diluted with water. Then gradually add the specified amount of hot water to the solution. With the help of a brush, the trunks and branches of diseased plants are lubricated in autumn (winter). ”
If the black cancer appeared on the tree, it will spread further. This tree is already disabled. And is it worth it to support for many years? But it is important to correctly diagnose that it is cancer, not another disease. Sometimes, a tree is cut, and on the stem there was a common lichen.
Each has its own concept of black cancer, it would be more correct to talk about necrosis. If the bark around the stem became two-thirds dead and began to exfoliate, then the tree is not a tenant. It, of course, will live, but it cannot bear fruit normally. To do something is just to suffer.
I had an experience: I once struggled a long time with a tinder fungus on plums. Periodically, he cut out, cleaned the chisel, treated the wounds with fungicides, the formed hollow was covered with cement and stones. In the end, I had a sink without internal wood, she did not have a trunk, she kept almost on one bark. Despite all my efforts, it still had to be cut. There is no magic pill.
And do not be afraid to part with the trees. Now almost all varieties of fruit are fast enough, they begin to bear fruit for the fourth year.
- a pound is 410 g
- bucket - 12,29 liters.
Try to become a garden doctor. Black tree cancer is not a sentence. And the saw and the ax ... This is an emergency.
See also: When to spray trees and the table of terms of garden works
How to prevent disease?
Arriving at the cottage, the first thing to do is to examine all the plants with a magnifying glass.
If there is a small crack on the stem or branch, black cancer will come to this place in three to four years. The presence of necrosis is verified with the help of a garden knife, which you need to split off a bit of bark. If it easily exfoliates, then the cortex is dead.
Spread the crack to see how much necrosis has spread.
Dead wood should be cut to a healthy tissue, cleaned and treated with fungicide against fungi.
After that, cover with the garden sauce. The main thing is to properly care for the trees: crop, feed, water, so that the plant was strong, because the weakened are affected.
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- Pruning trees for beginners
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2 Review (s)
In our garden, in recent years, almost all the apple trees have disappeared. It is very similar to apple-tree cancer, but I have not yet found effective ways of fighting. I wanted to ask if there are effective methods of struggle and prevention? Is there any hope that we will eat more of our apples? And for what reason do apple leaves turn yellow in May?
■ Mosses and lichens are often found on fruit trees. By themselves, they do not harm L - they live quietly on their bark. However, in those places where they grow, favorable conditions are created for the development of rot. After rain, a lot of moisture accumulates under lichens - in such an environment many bacteria feel great. Cleaning the bark is best done in spring in calm weather. I lay a film under a tree, put on a rough construction gauntlet and run my hand along the branches. After this treatment, most of the growths disappear. Everything that remains on the bark (larger lichens) can be removed with a trowel or brush. But don’t be zealous - the bark cannot be damaged. I drop the lichens from the film into a fire and burn.