JP2003104813A - Composition for controlling parasite on tree - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means for effectively controlling parasite on trees. SOLUTION: A composition for controlling the pests parasite on the trees which contains S-sec-butyl O-ethyl 2-oxo-1,3-thiazolidin-3-ylphosphonothioate (fosthiazate) as an active ingredient, a method for controlling the pests parasite on the trees in which the fosthiazate is used as the active ingredient, and a method for protecting the trees in which the fosthiazate is used as the active ingredient are provided in the specification, respectively.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to S-sec-butyl.
O-ethyl 2-oxo-1,3-thiazolidin-3-ylphosphonothioate (generic name: fosthiazate; fost
The present invention relates to a tree parasitic pest control composition containing hiazate) as an active ingredient, a method for controlling the pest, and a method for protecting trees.

[0002]

2. Description of the Related Art JP-A-60-136590 discloses that an organophosphorus compound containing fosthiazate is useful as an active ingredient of insecticides, acaricides and nematicides. on the other hand,
JP-A-2-88590 discloses the (−) optical isomer of fosthiazate and its usefulness as a pest control agent. As a plant-parasitic nematode, pinewood nematode is illustrated therein. However, no specific description about its control is found.

[0003]

When pests parasitize a tree, the growth of the tree is hindered or the tree withers due to the effects of feeding damage and toxins produced. In response to this problem, measures have been taken such as injecting a drug into the trunk of the tree or incinerating a part or all of the tree where parasitism was observed to prevent further damage, but it is still effective. No countermeasures can be found. The purpose of the present invention is to
It is to provide a means for effectively controlling pests parasitic on trees.

[0004]

Means for Solving the Problems As a result of intensive studies for solving the above-mentioned problems, the present inventors have found that the intended purpose can be achieved by using a specific active ingredient,
The present invention has been completed.

That is, the present invention provides a composition for controlling tree-parasitic pests containing fosthiazate as an active ingredient (hereinafter simply referred to as composition), and a method for controlling tree-parasitic pests using fosthiazate as an active ingredient (hereinafter simply referred to as "composition"). And a method for protecting trees using fosthiazate as an active ingredient (hereinafter simply referred to as a protecting method).

Although there are optical isomers of fosthiazate, the present invention includes the use of both isomers and a mixture of isomers.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION There are no particular restrictions on the trees to be protected, for example, forest trees such as pine, cedar and cypress; citrus, apple, pear, fig, oyster, peach, grape, chestnut, cherry, Fruit trees such as plums, prunes, loquats, gummy, and plums; tree plantings such as Satsuki, azalea, sasanqua, camellia, sage, cherry, oxseed, and maple, among others, are used to control pests parasitic on forest trees. It is especially effective for controlling pests that are parasitic on pine trees.
The pine trees to be protected include not only those in forests but also those in various places such as parks, gardens, pine forests and golf courses.

Examples of pests to be controlled include nematodes that adversely affect the growth of trees such as pine wood nematodes; beetle beetles such as pine wood beetle, beetle beetles such as pine beetle, and pine beetle. Perforating pests such as weevil such as weevil that enter into trees and feed on them; aphids such as Aedes aegypti aphid, sucking pests such as scale insects and weevil; spider mites such as Spodoptera litura;
Flies such as pine flies and scutellaria; food-damaging pests such as tortoises, rhododendrons, minnows, beetles and wasps, among others, are effective in controlling nematodes and perforating pests. It is particularly effective for controlling pine wood nematodes and pine wood chafers.

Since the composition of the present invention can control both nematodes and perforating pests, it can very efficiently protect trees from damage by pests. For example, in the problem of pine tree wilting in pine trees, the main factor is that pine wood nematodes parasitize the pine tree and cause physiological abnormalities in the pine tree, so pine wilting should be prevented by controlling it. The pine wood nematode coexists with the pine wood chafer, the pine wood nematode, and the pine wood nematode mediates the pine wood nematode. There is no fundamental solution. Therefore, it is possible to eliminate a main factor of tree growth inhibition such as pine wilting (for example, to control pine wood nematodes), and to eliminate a secondary factor (for example, to control the vector pine pine beetle). The possible compositions of the present invention are extremely useful and practical because they are effective over a wide range with low throughput.

The method for treating the composition of the present invention is not particularly limited, and examples thereof include tree injection treatment, sub-canopy soil treatment, foliage treatment, and coating treatment. Examples of the tree body injection treatment include a method of treating the trunk or root system of a tree, and the sub-canopy soil treatment includes, for example, a spray formulation or a liquid formulation itself obtained by appropriately diluting various formulations with a diluent such as water. Examples thereof include a method of treating the soil and a method of digging the solid preparation itself by digging the soil surface or the soil by several cm.
Among the above-mentioned treatment methods, sub-canopy soil treatment is desirable, and among them, sub-crown soil irrigation treatment in which a spray solution or a liquid formulation itself obtained by appropriately diluting various preparations with a diluent such as water is irrigated is more desirable. At the time of treatment, it may be treated with a spraying device or manually. Sub-canopy soil irrigation treatment is a treatment method that has various advantages, but it has not yet been commercially successful in the art. The advantages include, for example, 1) a simple treatment method that does not require special skill and only irrigates the soil with a chemical solution around the tree, 2) there is no restriction on the timing of the treatment of the agent, and 3) the tree 1 The time required for processing per book is shorter than that for tree trunk injection, which is often carried out commercially in the field. 4) It is not necessary to collect bottles after the processing required for tree trunk injection. 5) Since it is not necessary to make holes in trees, which is indispensable for stem injection, it does not impair the appearance or cause decay of trees or resistance due to the entry of fungi or wind and snow from the chemical injection holes. There are such things.

In the composition of the present invention, since the active ingredient fosthiazate permeates and migrates through the tree, the desired effect can be achieved by local treatment. Is particularly useful because fostiazate, which is an active ingredient, permeates from the roots to the trunk and exerts a desired effect by the sub-canopy soil irrigation treatment.

[0012] For example, pests parasitic on the inside of pine trees, more specifically, the inside of stems, inside branches and / or roots, such as pine wood nematodes and pine wood chafers, are treated under the canopy soil. It can be controlled by topical treatment of the composition of the present invention.

Further, the composition of the present invention can exhibit both preventive effect and therapeutic effect. That is, a method for obtaining a desired effect by treating the tree at any time before damage to the tree or before the presence of parasitic pests is confirmed, and Both can be carried out at any time after the existence is confirmed to obtain a desired effect.

The treatment of the composition of the present invention includes the type and size of trees to be protected, the type and generation status of pests to be controlled, weather and soil conditions, treatment time, and formulation form. However, the concentration of fostiazate, which is the active ingredient, in the tree is usually 0.1 to 100.
ppm, desirably 1 to 10 ppm, and the amount of treatment is, for example, chest diameter (diameter of trunk about 1 m from the ground) 1
For a tree of about 0 cm, the amount of fosthiazate per tree is 5 to 400 g, preferably 20 to 100 g. However, the optimum treatment concentration or treatment amount can be individually determined by taking into consideration the above-mentioned various conditions and the like and appropriately performing a preliminary test.

The control method of the present invention is a method for controlling pests by treating a tree to be protected or its periphery with the active ingredient fosthiazate at the treatment concentration or treatment amount described above. As the method, various methods can be adopted as described above, and the treatment time can be selected at any time. The protection method of the present invention is a method of controlling pests in this way and protecting the target trees.

In the present invention, other tree-parasitic pest controlling components can be mixed or used together with fosthiazate, and if desired, other pesticides (insecticides, nematicides, acaricides, soil-killing agents) can be used. Pesticides, fungicides, antiviral agents, attractants, antibiotics, plant hormones, herbicides, plant growth regulators, etc.), fertilizers, soil conditioners, phytotoxic agents, soil penetrants, etc. may be mixed or used in combination. it can. The fosthiazate and the various other components described above may be prepared separately, or may be mixed at the time of treatment, or may be prepared together.

In the present invention, fosthiazate is prepared in various dosage forms according to various preparation methods in the art.
It is useful to formulate into a formulation suitable for under-canopy soil treatment, more preferably under-canopy soil irrigation treatment. Examples of such a formulation type include powders, granules, powder granules, tablets, wettable powders, wettable granules, water-soluble solvents, water-soluble granules, suspensions, emulsions, microemulsions, suspo Emulsion agent,
Examples thereof include emulsions, liquids, gels, coatings and capsules. Among them, granules and liquids are preferable, and liquids are more preferable.

Various adjuvants that can be used in the preparation of the preparation include clay, diatomaceous earth, calcium carbonate, talc, acid clay, bentonite, pyrophyllite, attapulgite, kaolinite, perlite, vermiculite, zeolite, silica sand, silica stone. , Solid carriers such as pumice, white carbon, gypsum, sodium sulfate, sodium carbonate, sodium bicarbonate, ammonium sulfate, sodium chloride, urea, sucrose, glucose, wheat flour, starch; xylene, trimethylbenzene, tetramethylbenzene, cyclohexane, solvent naphtha,
Kerosene, chlorobenzene, dichloromethane, acetone, methyl ethyl ketone, cyclohexanone, ethyl alcohol, isopropyl alcohol, ethylene glycol, propylene glycol, polyethylene glycol,
Polypropylene glycol, propylene glycol methyl ether, dipropylene glycol methyl ether,
Solvents such as propylene glycol butyl ether, dimethylacetamide, dimethylsulfoxide, N-methyl-2-pyrrolidone, water; fatty acid salts, benzoates, alkylsulfosuccinates, dialkylsulfosuccinates, polycarboxylates, alkyl sulfates, Alkyl sulfate, alkylaryl sulfate, alkyl diglycol ether sulfate, alcohol sulfate ester salt, alkyl sulfonate, alkyl aryl sulfonate, aryl sulfonate, lignin sulfonate, alkyl diphenyl ether disulfonate, polystyrene sulfone Acid salt, alkyl phosphate ester salt, alkyl aryl phosphate salt, styryl aryl phosphate salt, polyoxyethylene alkyl ether sulfate ester salt, polyoxyethylene alkyl aryl salt Anionic surfactants such as ether sulfates, polyoxyethylene alkylaryl ether sulfates, polyoxyethylene alkyl ether phosphates, polyoxyethylene alkylaryl phosphates, and naphthalene sulfonate formalin condensate salts Agents: sorbitan fatty acid ester, glycerin fatty acid ester, fatty acid polyglyceride, fatty acid alcohol polyglycol ether, acetylene glycol, acetylene alcohol, oxyalkylene block polymer, polyoxyethylene alkyl ether, polyoxyethylene alkylaryl ether, polyoxyethylene styryl aryl ether , Polyoxyethylene glycol alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorby Nonionic surfactants such as fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxypropylene fatty acid ester; olive oil, kapok oil, castor oil, palm oil, camellia oil, coconut oil, sesame oil , Vegetable oils such as corn oil, rice bran oil, peanut oil, cottonseed oil, soybean oil, rapeseed oil, flaxseed oil, cutting oil, and liquid paraffin, and mineral oils.

Further, a spreading agent, a thickener, an anti-settling agent, an antifreezing agent, a dispersion stabilizer, an antifungal agent, a chemical damage reducing agent, an anti-caking agent, a fluidity improving agent, a defoaming agent, an anti-decomposition agent, etc. Various commonly used auxiliary agents can also be used. The auxiliary agent may be further selected from those known in the art without departing from the object of the present invention. The mixing ratio of fosthiazate and various auxiliary agents is generally 0.01: 99.99.
˜95: 5, preferably 0.1: 99.9 to 90:10. When actually using these preparations, use them as they are,
Alternatively, it can be used by diluting it with a diluent such as water to a predetermined concentration and adding various spreading agents as necessary. In addition, as fosthiazate, a commercially available product may be used.

In the present invention, particularly preferable embodiments will be described below. [1] The composition, the method for controlling or the method for protecting, wherein the tree-parasitic pest is a nematode parasitic on pine. [2] The composition, the method for controlling or the method for protecting, wherein the tree-parasitic pest is a boring pest parasitic on pine. [3] The composition, the control method or the protection method, wherein the tree-parasitic pest is both a pine parasitic nematode and a boring pest. [4] The above-mentioned control method or protection method, wherein nematodes parasitic on pine are controlled by soil treatment under canopy. [5] The above-mentioned control method or protection method for controlling perforating pests parasitic on pine by soil treatment under canopy. [6] The above-mentioned control method or protection method for controlling both nematodes and perforating pests parasitic on pine by soil treatment under canopy. [7] The control method or protection method according to the above [4], [5] or [6], wherein the treatment method is a sub-canopy soil irrigation treatment. [8] The composition, control method or protection method according to the above [1], [3], [4] or [6], wherein the nematode is a pine wood nematode.

[9] The composition, control method or protection method according to the above [2], [3], [5] or [6], wherein the perforating pest is a pine wood chafer. [10] Use phostiazate to control nematodes and / or boring pests parasitic on pine trees. [11] Using phostiazate, pine pine nematodes and / or pine wood chafers are parasitic on pine. [12] Fosthiazate is applied to sub-canopy soil to control nematodes and / or boring pests parasitic on pine or to protect pine. [13] Fosthiazate is applied to sub-canopy soil to control nematodes and / or boring pests that are parasitic inside pine trees. [14] Fosthiazate is applied to sub-canopy soil to control pine wood nematodes and / or pine wood chafers that parasitize pine trees. [15] Treating the soil under canopy with fostiazate to control pine wood nematodes and / or pine wood chafers that parasitize inside pine trees.

[0021]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited thereto. First, a formulation preparation example will be described.

Formulation Example 1 10.5 g of fosthiazate, 4 g of a mixture of polyoxyethylene styryl phenyl ether and dodecylbenzene sulfonate (trade name: Solpol 355; manufactured by Toho Chemical Industry Co., Ltd.) and a high boiling organic solvent (trade name: DBE; DuPont stock) 85.5g (manufactured by the company) are mixed to obtain a liquid agent.

Formulation Example 2 31.6 g of fostiazate, 8 g of polyoxyethylene styrenated phenyl ether (trade name: Neugen EA-137; manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and dipropylene glycol methyl ether (trade name: Dowanol DPM; Dow Chemical) 60.4 g (made by Japan Co., Ltd.) are mixed to obtain a liquid agent.

Formulation Example 3 52.6 g of fostiazate, 20 g of a mixture of polyoxyethylene styryl phenyl ether and dodecylbenzene sulfonate (trade name: Solpol 355H; manufactured by Toho Chemical Industry Co., Ltd.) and tripropylene glycol methyl ether (trade name: Dowanol TPM; 27.4 g of Dow Chemical Japan Co., Ltd. is mixed to obtain a liquid agent.

Preparation Example 4 2.1 g of fosthiazate and 197.9 g of silica stone particles of 20 to 50 mesh (manufactured by Tokai Kogyo Co., Ltd.) are mixed to obtain granules.

Formulation Example 5 20% by weight of polyoxyethylene styrenated phenyl ether (trade name: Neugen EA-1 with respect to fosthiazate)
77; manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) 6.6 g
Is absorbed into 93.4 g of mineral particles (trade name: Kunimine fine particles; manufactured by Kunimine Industry Co., Ltd.) to obtain granules.

Formulation Example 6 10.5 g of fosthiazate is absorbed into 89.5 g of 16-50 mesh granular gypsum (trade name: Agussorb CN; manufactured by OIL DRI) to obtain granules.

Formulation Example 7 Fostiazate 21.1 g, polyoxyethylene styryl phenyl ether (trade name: Solpol T15; manufactured by Toho Chemical Industry Co., Ltd.) 6 g, polyoxyethylene castor oil (trade name: Solpol CA50; manufactured by Toho Chemical Industry Co., Ltd.) ) 4 g and an aromatic solvent (trade name: Solvesso 150; manufactured by Exxon Japan Ltd.) 68.9 g are mixed to obtain an emulsion.

Next, test examples will be described. Test Example 1 9 ml (1250 to 130
1 ml of an aqueous solution containing fostiazate at a predetermined concentration was added to 0 pine wood nematodes, and this was placed in a watch glass, and then allowed to stand for 24 hours while being maintained at 23 ° C. afterwards,
The number of inactive insects (Panthera chinensis that does not move at all or slightly moved) was counted, and the inactive insect rate was calculated by the following formula, and the results shown in Table 1 were obtained. Inactive insect rate (%) = [number of inactive insects / total number of Pinegrass nematodes before treatment with fostiaceate] x 100

[Table 1]

Test Example 2 Pine wilted wood pieces (5 g) on which pine wood nematodes parasitize
Then, 5 ml of an aqueous solution containing fostiazate at a predetermined concentration was sprayed on the pieces, and the pieces were placed in a petri dish lined with filter paper moistened with water, and then left at 22 ° C for 10 days. After that, pinewood nematodes were detected by the Bellman method, and active live insects were counted, and the results shown in Table 2 were obtained. The survival number of the pine wood nematode was the average value of the survival numbers of the three pieces.

[Table 2]

Test Example 3 The soil around the trunk of a young Akamatsu tree (1.3 cm in diameter) planted in a No. 12 plastic pot in a greenhouse was dug about several cm,
The fostiazate granules prepared according to Preparation Example 6 were treated and then backfilled. The throughput of fostiazate is 60
0 mga.i./tree. Two days and 16 days after the treatment, the branches were covered with a 20-mesh nylon insect repellent net, and several pine wood moth adults were released in the branches. After the larvae were released, they were observed over time, the number of dead larvae was investigated, and the mortality rate was determined by the following formula, and the results shown in Table 3 were obtained. Mortality rate (%) = [number of dead insects / number of released insects] x 100

[Table 3]

Test Example 4 A power sprayer in which the prescribed dose of the liquid formulation of fosthiazate prepared according to Formulation Example 2 was adjusted to a pressure of 20 kg / cm ³ under the crown of an adult pine tree (chest diameter 9 to 24 cm). Using a soil irrigation machine (trade name: Pore Nozzle, manufactured by Nagata Manufacturing Co., Ltd.), connect it to 4 or 8 concentric circles (depth 15c).
m) Irrigation treatment (irrigation volume is 2 liters per place), and the fostiazate granules prepared according to Formulation Example 6 described above were concentrically centered on the trunk with a depth of about 15 cm and a width of 20 cm.
It was backfilled after it was scattered in the place where a groove of about cm was dug. Approximately 70 days after treatment, a trunk with a diameter of 6 mm was drilled in the trunk around 1 m above the ground, and 3 pine tree nematodes per pine tree
0000 heads were inoculated. Approximately 6 months after the inoculation, 10 g of wood powder was collected from a mature pine tree using a drill, and the presence or absence of pine wood nematode was detected by the Bellman method. At the same time, the mortality rate of the mature pine tree was calculated. The results are shown in Table 4.

[Table 4] From these test results, it can be seen that pinewood nematode, which is a pest parasitic inside trees, can be controlled by treating the composition of the present invention with soil under canopy.

Claims (10)

[Claims] 1. S-sec-butyl O-ethyl 2-oxo-
A tree parasitic pest control composition containing 1,3-thiazolidin-3-ylphosphonothioate as an active ingredient. 2. S-sec-butyl O-ethyl 2-oxo-
A method for controlling tree-parasitic pests using 1,3-thiazolidin-3-ylphosphonothioate as an active ingredient. 3. The method according to claim 2, which controls nematodes and / or boring pests parasitic on pine trees. 4. A pine wood nematode parasitic on pine and / or
Alternatively, the method according to claim 2, wherein the pine wood chafer is controlled. 5. The method according to claim 2, wherein the active ingredient is applied to sub-canopy soil to control nematodes and / or boring pests parasitic on pine trees. 6. The method according to claim 5, which controls nematodes and / or boring pests parasitic on the inside of pine trees. 7. The method according to claim 2, wherein the subordinate canopy soil is treated with the active ingredient to control pine wood nematodes and / or pine wood chafers. 8. The method according to claim 7, which controls pine wood nematodes and / or pine wood chafers that parasitize inside pine trees. 9. S-sec-butyl O-ethyl 2-oxo-
A method for protecting trees using 1,3-thiazolidin-3-ylphosphonothioate as an active ingredient. 10. The method according to claim 9, wherein the subtree canopy soil is treated with the active ingredient to protect the pine trees.