JP2003081710A - Removing agent for lichen and method for removing lichen of tree - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove a lichen such as Parmelia tinctorum parasitic on a tree with a solvent nontoxic to humans and animals by suppressing the growth of the lichen and killing the lichen without affecting the growth of the tree itself. SOLUTION: This removing agent for the lichen comprises using a carboxylic acid or acetic acid having the simplest shape in the carboxylic acids as an active ingredient and a seawater salt added to the acetic acid. The resultant solution is sprayed or scattered on the tree to kill the lichen. That is, the solution can be used for various kinds of materials to be treated (the tree, a stone wall, a concrete wall, etc.), and the removing agent for the lichen is capable of suppressing the growth of the lichen and killing the lichen.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lichen plant removing agent and a method for removing lichen plants from trees.

[0002]

Lichen plants parasitize the surface, peripheral surface, etc. of trees, weakening the trees and finally killing them. Also, when it rains, it adheres to trees, absorbs nutrients from the trees, and by their reproduction, weakens the trees and eventually withers them. As an example of the symptom, it has been found that what originally sprout up to 1 m falls to 10 cm or less due to the infestation of lichen plants. Also, due to the recent global warming, lichen plant parasitism tends to increase rapidly. In addition, this lichen plant has spread to structures such as garden stones and stone walls.

Recently, as a simple method for removing the lichen plant attached to the tree, there is a method of stripping it with a spatula or a wire brush. Alternatively, there is a method of spraying a bactericidal agent (Dacomal, Daisen) or the like.

Further, as a prior art of a removing agent for algae, mold and the like, which is common with the above surface stain removing agent, there is disclosed in Japanese Patent Laid-Open No. 63-20.
There is a coating composition for algae prevention described in No. 2677. In the present invention, 5 to 20 parts by weight of a cationic surfactant as a component, 0.1 to 10 parts by weight of a component, and 0 of an organic acid as a component are used with respect to 100 parts by weight of a solid content of a resin emulsion as a component.
˜7 parts by weight, component plasticizer 0 to 15 parts by weight, component nonionic surfactant and / or amphoteric surfactant 0 to
It is 50 parts by weight, and has a structure for forming a film for controlling algae on the surface.

Further, there is an algae removing agent and a method for removing algae described in JP-A-2-225401. The present invention is characterized in that it comprises an algicidal component and a heat retaining component, and has a structure in which algae are removed by adhering to the surface by application or spraying means.

There are also antifungal agents and coating compositions containing the same described in JP-A-2-233603. This invention comprises 2,3,5,6 tetrachloromethylsulfonyl pyridine and iodobropagyl carbamate as active ingredients, and is applied to the surface by coating or spraying means,
It is characterized by preventing the generation of algae and mold over a long period of time.

[0007]

The conventional method of stripping with a spatula or the like certainly seems effective temporarily, but false roots remain, and therefore the probability of reoccurrence is extremely high. Further, there is a problem that a peeling work is required each time, and a labor based on the peeling work is required. In addition, there are problems in preservation of appearance and shape such that the bark is damaged by this method and the twigs cannot be peeled off. I tried to use the conventional method of spraying general bactericides (Dacomal, Daisen) etc., but the effect was not so good. An object of the present invention is to suppress the growth of lichen plants such as Prunus chinensis parasitic on trees and kill them, but to remove them using a solvent that does not affect the growth of the trees themselves and is harmless to humans and animals.

[0008]

The lichen plant removing agent of the present invention uses, as an active ingredient, carboxylic acid or acetic acid having the simplest form among carboxylic acids, and acetic acid to which seawater salt is added, This solvent is sprayed and sprayed on trees to kill lichen plants. That is, the solvent of the present invention provides a lichen plant removing agent that can be used for various kinds of objects to be treated (trees, stone walls, concrete walls, etc.) and that suppresses the growth of lichen plants and kills them.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. Experimental Method The following experiment was conducted using the lichen plant removing solvent that was invented by the present inventor in order to grasp the growth suppression and death status of lichen plants. The active ingredient of the solvent is carboxylic acid or acetic acid having the simplest form among carboxylic acids, and acetic acid to which seawater salt is added. Table 1 for the experiment
Two kinds of solvent were used

[0010]

[Table 1]

As for the solution components, HK-1 is a 100% acetic acid solution, and HK-2 is a mixed solution containing 1000 g of acetic acid and 1 g of seawater salt in a weight ratio. The solvent may be a salt solution of an organic compound having a carboxyl group instead of acetic acid. Also, in this experiment, lichen plants, especially P. aeruginosa, contained 70 to 8 of the entire bark.
A tree with 0% parasitism, weak tree vigor, and some of the branches had started to die was used. The trees shown in Table 2 were used as experimental trees, and two plums and two cherry trees of approximately the same size were used. Table 3 shows the experimental contents of the solvents in Table 1 and the trees in Table 2.

[0012]

[Table 2]

[0013]

[Table 3]

The lichen plant removing agent using HK-1 (acetic acid solution) or HK-2 (acetic acid solution + seawater salt) was sprayed on the whole tree. About 10 liters of solvent was used for plums and about 8 liters for Oshima cherry, which were thoroughly sprayed on the entire tree. That is, 0.5 liter of solvent was sprayed per 1 m ^{2 of} bark.

The results of the experiment shown in Table 3 will be described in detail. Prior to the experiment, the tree was entirely infested with a gray-green lichen plant (Umechinoki). In Experiment 1 to Experiment 4, 3 to 4 after coating
By the day, every tree begins to turn white-grey. In Experiment 3 and Experiment 4 using HK-2 (acetic acid solution + seawater salt),
Approximately two and a half months after the application of the tree, the white grey-colored Umenogo moss died and began to peel off little by little. HK-1
Similarly, in Experiments 1 and 2 using (acetic acid solution), Pleurotus cornucopiae dies and begins to peel off about 3 months after application. The following spring, it was confirmed that the growth of buds was about 10 cm before the experiment, but was restored to the original length of about 1 m. This clearly revived the tree's vigor. Pleurotus cornucopiae completely peeled off in about half a year after applying the solvent.

Therefore, in any experiment, HK-1 (acetic acid solution) and HK-2 (acetic acid solution + seawater salt) suppress the growth of the lichen plant and kill it, but the growth of the tree itself is not affected, and the lichen plant It turns out that the trees are dying and increasing in tree vigor.
It was also found by experiments that it is also effective against black, grey, brown brown disease, or moss and mushrooms that parasitize trees.

[0017]

EFFECTS OF THE INVENTION The use of the lichen plant removing agent of the present invention suppresses the growth of lichen plants and kills them, but has no effect on the growth of trees themselves, and has the effect of dying lichen plants and increasing vigor. The acetic acid, seawater salt, etc. used are not harmful to humans and animals, and there is no danger when sprayed. Therefore, it can be used in a wide range of places such as gardens and parks, and has an effect that it can also be used for structures such as garden stones and stone walls that have recently reached the range of lichen plants.

Claims (4)

[Claims] 1. A lichen plant removing agent containing carboxylic acid as an active ingredient. 2. A lichen plant removing agent containing acetic acid as an active ingredient. 3. A lichen plant removing agent comprising acetic acid and seawater salt as active ingredients. 4. A method for removing a lichen plant, which comprises killing a lichen plant by spraying or spraying a lichen plant removing agent containing acetic acid or acetic acid and seawater salt as an active ingredient on a tree.