JPH11222410A - Control of plant withering and activating agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject controlling agent and activating agent which prevent and control effectively Bursaphelenchus xylophilus or borers and can control or activate the withering damage on trees or the like by including a garlic essential oil and/or an allyl sulfide compound. SOLUTION: The objective controlling agent and activating agent are obtained by including (A) a garlic essential oil and/or (B) an allyl sulfide compound of a constructive component of the component A. The component A is obtained by crushing Allium sativum to react with enzymes and then separating and purifying an essential oil by means of steam distillation. The component B is obtained by fractional distillation and purification of the component A or by synthetic processes. As the component B, diallyl monosulfide, diallyl disulfide or the like is illustrated. As plants applied to this controlling agent and activating agent, trees, petal plants and the like in forests, parks, streets, gardens, windbreaks or orchards are illustrated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plant pest comprising garlic essential oil or an allyl sulfide compound as an active ingredient.
The present invention relates to an activator for controlling a tree and a flower plant by controlling or preventing the death of a tree and a flower plant and for weakening the tree and the flower plant.

[0002]

2. Description of the Related Art Forest resources are extremely important not only as timber resources but also in maintaining an ecosystem as a treasure trove of valuable natural creatures, and also important in terms of securing water resources and land conservation. Plays a role. Recently, carbon dioxide (C) has been attracting attention as one of the causes of global warming.
Forest resources also play an important role in assimilation of O ₂ ). However, in recent years, tree withering (falling) phenomena frequently occur, and the causes thereof include air pollution, acid rain, influence of weather damage, pests and the like.

[0003] It is the pine genus that is most severely damaged by tree withering. Pine trees are a major resource occupying 10% of Japan's forest area, and as an evergreen conifer, play extremely important functions and landscapes in gardens, park trees, street trees, windbreak forests and the like.

[0004] The importance of the damage of pine wilt is
It is a fact that the spread of damage is progressing along with the extremely rapid progression of disease that is unparalleled by other tree diseases. On the other hand, the cause of pine wilt disease was investigated by "Study on prevention of pine wilt by scabbard" and "Study on pine wilt control".
Pine beetle (Monocham)
us alternatus) is an infectious disease transmitted through the pathogen, pine wood nematode (Bursaphelenchus xylopilus).

[0005] As vector insects of pathogens, in addition to the pine wood beetle, M. Saltuar
ius), M. niteus and Spondylis burpretoides have been identified in more than 10 species of Paramecidae.

[0006] In other words, in a warm region, pine trees which became sick due to invasion and infection of pine wood nematodes by summer after-feeding (feeding) of pine wood of pine wood beetle exhibit wilt symptoms in summer.
It is accompanied by marked reddish browning of the needles and dies in autumn. It has also been shown that in cold regions, it will die over time.

[0007] As the pathogenesis mechanism of pine wilt disease is elucidated, various methods for controlling damage are also being carried out. The control methods include the method of exterminating the pine wood beetle, the pathogen's spreader, the natural enemy, the method of exterminating insect attractants, and the method of exterminating attractant insects. In the case of dead trees, the pine wood beetle is cut down before infestation, incineration, and chemical fumigation. The law is taking place.

[0008] Methods for the prevention and control of the pine wood nematode, which is a pathogen, include a method of injecting a nematicide into a pine tree trunk, a method of soil treatment, and the like. ing.

[0009] In general, trees that are susceptible to post-eating or perforation damage of pests have a tendency to decay in vitality, but there is no other method except to leave them alone.

[0010]

However, these methods also have various problems, such as organophosphorus drugs such as fenitrothion (MEP agent) and fenthion (MPP agent) and carbamate drugs such as carvalyl agent (NAC) as insecticides. In the air or on the ground, there are concerns about the destruction of nature of biological ecosystems and pollution of the natural environment.

Although the birds, insects, microorganisms and the like have been found in the natural enemies law, they have not been used yet.

The method of exterminating attractants has been carried out by using the attracting activity of α-pinene and ethanol together with an insect trap, but since 80% of the nematodes have already escaped before being trapped, damage is caused. Not very useful for defense.

Although the method of cutting dead trees is effective, it requires incineration, pesticide treatment, or fumigation treatment, which is difficult to implement in terms of labor and cost. Selection trees for other resistant species are still selecting candidate trees.

Therefore, despite various control efforts, the damage is still spreading.

[0015] On the other hand, other tree pests cause damage to oak trees such as oak and oak, and the damage is increasing. It is known that these causes are caused by boreholes that make holes in the trees and invade inside, causing the trees to secrete resin in order to prevent the invasion, resulting in impeded water flow and die. Has not established a control method.

[0016]

SUMMARY OF THE INVENTION The present invention provides garlic essential oil or an allyl sulfide compound which has no adverse effects on plants and the natural environment and is safe for humans and animals. It is intended to provide an agent for preventing and controlling pine wood nematodes and burrowing insects, which is used as an active ingredient of tree borer insects, and for controlling and activating trees, fruit trees and flowering plants. is there.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention contains garlic essential oil or an allyl sulfide compound which is a component of garlic essential oil as an active ingredient of pine-killed nematodes and anti-penetrating insects.
The present invention relates to an agent for controlling dying of trees and the like and for activating the fruits, which are applied to fruit trees and flowering plants.

The allyl sulfide compounds which are constituents of garlic essential oil include diallyl monosulfide, diallyl disulfide, diallyl trisulfide, diallyl tetrasulfide, allylmethyl monosulfide, allylmethyl disulfide, allyl trisulfide and other trace amounts of allyl sulfide compounds. including. By using a component selected from these compounds, the compound can be used as an agent for controlling dying of trees and the like and activating the tree of the present invention.

Solvents when the garlic essential oil or the allyl sulfide compound of the present invention is used include sulfoxides such as dimethyl sulfoxide, alcohols such as methyl alcohol, ketones such as acetone, aliphatic hydrocarbons such as hexane, and the like. It can be selected from amides such as dimethylacetamide, esters such as ethyl acetate, ethers such as dioxane, and water. At this time, a surfactant can be used as required, and the surfactant can be effectively used.

The method of applying the product of the present invention to trees and the like is as follows: 0.01 to 100% of garlic essential oil or allyl sulfide compound is used for bran, rice bran, dried garlic, ginseng as a crude drug,
Admixed with one or two or more supports selected from dried products such as Sengoku, Touki and Rhubarb and calcium carbonate.
It can be adsorbed and applied to the root of a tree or the like as appropriate depending on the situation, such as a spraying method. However, the present invention is not limited to this, and in the case of a liquid agent, a method of injecting into a tree trunk can also be applied.

In the case of a liquid preparation, it is used as an emulsion or a solution.
Fill a plastic container with 100-300 ml, and place 8-7
The application is carried out by injecting into the trunk of a tree with a lid having a cm nozzle cap.

The daily water evaporation of the tree is considered to be 10 l or less. If 5 g of garlic essential oil is injected over 50 days, 100 mg of the essential oil can be injected, and the essential oil concentration in the water of the tree is 100 mg / 10 l. 10 ppm,
The effective concentration can be maintained for about 50 days. The tree is activated by the action of the garlic essential oil component and other extract components.

Garlic essential oil, which is an active ingredient, is obtained by crushing garlic and allowing the enzyme to act sufficiently, and then separating and purifying the essential oil by a steam distillation method in a known manner. Constituents of the essential oil can be obtained by fractionating and refining garlic essential oil by a conventional method, or by a synthetic method.

According to the present invention, the effect is recognized in almost all tree species. In particular, as the trees, pine genus plants such as Japanese black pine, red pine, and Ryukyu pine damaged by pine wood nematodes; Damaged trees such as Mizunara, Kashiwa, Beech, Toy, China, Alder, Itaya, Fir, Harigiri, Ichigashi, Egonoki, Chestnut, Larch, Scotch pine, etc. Dead trees such as cedars, cypresses and maples, fruit trees include peaches, plums, citrus fruits, apples, grapes,
Excellent effect on pears and the like is recognized. It is also effective for flower plants such as flower beds, gardens, and pots.

The effect will be described below with reference to experimental examples.

Experimental Example 1 10 ppm of garlic essential oil was added to a surfactant (Tween 80)
And emulsified in a 0.01% solution of the pine wood nematode.
As a result of observation after incubation at 5 ° C. for 24 hours, the survival rate was 0%. On the other hand, the control group (only 0.01% surfactant (Tween 80) solution was injected similarly to the test group) showed a high survival rate. The mortality of the pine wood nematode was determined to be rigid if it did not move. As described above, it is possible to control the death of pine wood caused by the pine wood nematode.

Experimental Example 2 A mixture of 20% of diallyl monosulfide, 55% of diallyl disulfide and 25% of diallyl trisulfide was prepared by emulsifying it in a 0.02% solution of a surfactant (Tween 80) in 5 ppm. When a reed test was performed by approaching a certain ten mosquito beetle, all cases were repelled 3 hours later. Therefore, it is possible to control the damage of tree borers.

[0028]

EXAMPLES Example 1 10.0% garlic essential oil, garlic flakes (diameter 5
50% of dried garlic (mm or more), 5% of cabbage, 5% of cucumber, 5% of rhubarb, 10% of calcium carbonate and 15% of rice bran were mixed well to obtain a drug for administration into the soil at the base of the tree. .

Example 2 Garlic flakes were thoroughly immersed in garlic essential oil for about 24 hours and pulled up. Then, 40% of the garlic flakes (containing about 15% garlic essential oil), 30% rice bran, 5% senkyu, and 5% toukii , 5% rhubarb and 15% calcium carbonate were mixed to obtain a drug. The purpose is to regulate the outflow of garlic essential oil and maintain its efficacy.

Example 3 5.0% of a mixture of 60% diallyl disulfide, 30% diallyl trisulfide and 10% diallyl tetrasulfide, 40% dimethyl sulfoxide, 2.0% emulsifier (Tween 80) and 48. 0%,
An emulsion was obtained.

Example 4 10.0% of a mixture of 70% diallyl disulfide and 30% diallyl trisulfide, 30% bran, 10% garlic flake, 5.0% toukiki and 15.0% calcium carbonate were admixed. I got

Example 5 Garden Tree Gold Crest Wilma (5 Years Old)
st WILMA) was treated with a control group (no treatment) and a 5 g and 20 g administration group of the spray obtained in Example 2, and the activation was observed for 3 months. As a result, as shown in Table 1, the 20 g section of the product showed good activity.

[0033]

[Table 1]

Example 6 5 g and 15 g of the agent obtained in Example 4 per flower plant, Nadesico strain, were administered around the strain, and compared with the control group (untreated). As a result, as shown in Table 2, this product increased the number of flowers, prolonged the flowering period, and significantly improved flower bud formation.

[0035]

[Table 2]

Example 7 A test plot and a control plot were prepared using black pine with reduced vigor before and after the 15th grade. The drug obtained in Example 1 was administered to the test plot around the roots of 500 g and 1000 g. (No treatment) and observation for 5 months showed that the control section died,
The test plot was healthy and more vigorous.

[0037]

According to the present invention, there is provided an agent comprising garlic essential oil and an aryl sulfide compound, which is excellent in controlling plant death and activating. The target plants are not only trees such as forests, parks, streets, gardens, windbreaks, orchards,
It covers a wide range of plants, such as garden plants and flower plants such as pots.

In particular, it shows an excellent insecticidal and repellent effect against pine wilt and tree borer, and by controlling pine wood nematode, it is effective to prevent pine blight and prevents the occurrence of trees damaged by borer. Gives vitality to trees.

Further, the product of the present invention is completely harmless and safe not only for plants, but also for humans, livestock and the natural environment, and can be used easily.

Claims (3)

[Claims] 1. A plant dying control and activator comprising garlic essential oil and / or an allyl sulfide compound which is a component of the garlic essential oil as an active ingredient. 2. The method according to claim 1, wherein the plant is a tree of a forest, a park, a street, a garden, a windbreak or an orchard. 3. The method according to claim 1, wherein the plant is a flora plant.