JPS5839121B2 - Gaichiyuuboujiyohouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling important pests of plants such as aphids, lice, scabies, and mites.

That is, the present invention provides a diluent containing 0.025% by weight or more of a compound represented by the general formula (wherein R1 and R2 are alkyl groups having 5 or more carbon atoms, and M is sodium, potassium, ammonium, or amine). (Excluding use in combination with the following compound A or B or C)
This invention relates to a pest control method characterized by spraying.

A: Marathon B: Disinfectant C General formula (in the formula, A represents a benzene nucleus or naphthalene nucleus, X represents a hydrogen atom, a metal ion or an ammonium group, R
represents a hydrogen atom, a hydroxyl group, or an alkyl group having 20 or less carbon atoms, and n represents an integer of 1 to 5.

For example, radish aphid, false radish aphid,
Aphids such as green peach aphid, yellow peach aphid, apple boll beetle, cotton aphid, green peach aphid, pear aphid, citrus fruit aphid,
Lice such as the grapevine lice, blackberry lice, and red lice; insects such as the green spider mite, ruby scale lice, and the stone mite; and mites such as the giant spider mite, two-spotted spider mite, rust mite, and citrus spider mite; and the violet mites of various plants. It parasitizes leaves or buds and absorbs sap, weakening the tree's vigor.

Furthermore, aphids are also a major source of virus disease.

Until now, various chemical insecticides have been searched for and used to control these insects, but many of the conventional ones have toxic atomic groups in their chemical structure, making it difficult to target them. The problem is that it is toxic not only to pests, but also to a wide range of biological species, including people, animals, fish, shellfish, and birds.

The present inventor completely changed his perspective and searched a wide range of chemical insecticides without being limited by the chemical structures of conventional chemical insecticides.As a result, he unexpectedly discovered that they do not possess any toxic atomic groups. compound, i.e., general formula, R1-0-C-CH-
The compound represented by CH2-C-0-R20503M O (wherein R1 and R2 are alkyl groups having 5 or more carbon atoms, and M is sodium, potassium, ammonium, or amine) is used to target oils that are pests. It was discovered that the present invention has a selective and strong controlling effect on insects such as lice, lice, mites, etc., and the present invention has now been completed.

The compound represented by the above general formula is already known, but
It has not been reported in any previous literature that they have an excellent control effect against the pests listed above, and particularly when R1 and R2 in the above general formula are alkyl groups having 5 or more carbon atoms, the control effect is remarkable. The present inventor discovered for the first time that it has efficacy.

Examples of the compounds used in the method of the present invention include sodium (potassium, ammonium, amine) di-n-amyl sulfosuccinate, sodium (potassium, ammonium, amine) di-n-heptyl sulfosuccinate, sodium (potassium, ammonium, Examples include di-n-octyl sulfosuccinate (amine), di-2-ethylhexyl sodium (potassium, ammonium, amine) sulfosuccinate, and 2-ethylhexyl-1-methylheptyl sodium (potassium, ammonium, amine) sulfosuccinate.

It is clear from the following experimental examples that the compound represented by the above general formula used in the method of the present invention is effective in controlling the above pests.

That is, a piece of F paper with a diameter of 7 c1 rL moistened with distilled water is placed on the bottom of a Petri dish with a diameter of 9 crr L, and a thin piece of Hatron paper cut to the same size is placed on top of it.

For example, a cabbage leaf with a diameter of about 6 crrL on which about 20 wingless green peach aphids are placed is placed.

Place the bedding tray containing the cabbage leaves infested with green peach aphids on the Mitsubo Rika sprayer in the fixed position of the box.
After closing the lid, a 0.1% water dilution solution 1- of each drug listed in the table below is sucked into the spray tube and sprayed downward from the nozzle.

Turn the cabbage leaves over and spray 1 rnl on the underside as well.

Remove the Petri dish, cover it with a glass lid, and place it directly at 26-28℃.
After 2 hours and 24 hours, the cabbage leaves were placed in a constant temperature room, the glass lid was raised twice, the front and back of the cabbage leaves were observed, the number of dead insects was calculated, and the dead point rate was calculated, and the following results were obtained.

Furthermore, it is clear from the following experimental examples that in the method of the present invention, the effective concentration of the compound represented by the above general formula is 0.025% by weight or more.

That is, for example, using a dilute solution of sodium sulfosuccinate-di**2-ethylhexyl in water for spraying at a concentration shown in the following table, the same procedure as in the above experimental example was performed, and the results are as follows.

(M is sodium, potassium, ammonium, or amine) at a concentration of 0.025% or more by weight without using it together with the compound A or B, and then diluted with oil. Insects of insects of insects, lice, insects, and ticks, or of plants that are or are expected to be parasitized by them.
The spray is applied to areas that are infested with these pests or are thought to be infested.
When preparing a diluent, water may be added directly to the compound to dilute it, but water, alcohol (e.g., methanol, ethanol, impropatol, ethylene glycol, etc.), ketones (e.g., acetone, methyl ethyl ketone, etc.) , ethers (e.g., dioxane, tetranohydrofuran, etc.), aliphatic hydrocarbons, aromatic hydrocarbons, esters (e.g., ethyl acetate, etc.) and then added to a large amount of water. However, it is also convenient to stir and dilute to a predetermined concentration.

When spraying the diluted solution, a manual sprayer such as a hand-held or shoulder-held type may be used, and it is also effective to use a power sprayer or a mist machine for a large area.

The aim of spraying is of course not only the target pests themselves, but also the yellow leaves of plants that are parasitized or thought to be parasitized by them, as well as mites, etc., by spraying near the base of the plants. There is also no harm in irrigating the soil.

Furthermore, other types of insecticides, fungicides, herbicides, plant growth regulators, repellents, and fragrances other than the above-mentioned compounds A, B, or C are added to this spray diluted solution, and various plant nutrients, fertilizers, etc. Blending and dispersing are also included in the method of the present invention.

Examples of this invention will be given below.

Example 1 Sodium sulfosuccinate-di-2-ethylhexyl 5
ft was dissolved in 50 ml of ethyl alcohol, and this was added to 10 J of water and stirred well to prepare a chemical solution.

A potted Chinese cabbage infested with 50 Japanese radish aphids was sprayed with 50 rILl of the above chemical solution using a spray gun so that it covered both the front and back of the leaves, covered with a gauze frame, and one eye was removed to investigate live insects of the Japanese radish aphid. However, no viable insects were observed.

Example 2 11 parts of di-n-heptyl sodium sulfosuccinate were dissolved in 11 parts of water, and 20 parts of the above diluted solution was sprayed with a spray gun onto one green bean seedling infested with 50 Kanzawa spider mites.

As a result of the initial inspection, no living insects were found.

In addition, in the control area where water was sprayed, the number of surviving insects remained the same as before spraying.

Example 3 A 0.1% aqueous solution of 2-ethylhexyl-1-methylheptyl gallium sulfosuccinate was sprayed with a spray gun on 30 mulberry lice infesting mulberry plants in pots.

As a result of the first random inspection, no living insects were found.

In addition, in the target area where water was sprayed, the number of surviving insects was the same as before spraying.

Example 4 A 0.2% aqueous solution of sodium sulfosuccinate-d-2-ethylhexyl was sprayed onto hatched larvae of the scale insect using a spray gun.

As a result of the first random inspection, no living insects were found.

In the control area where water was sprayed, the number of surviving insects was the same as before spraying.

Claims (1)

[Claims] Contains 0.025% by weight or more of a compound represented by the general formula 1 (wherein R1 and R2 are alkyl groups having 5 or more carbon atoms, and M is sodium, potassium, ammonium or amine) Diluent (excluding combination with compound A or B or C below)
A pest control method characterized by spraying. A: Marathon B: Disinfectant C General formula (in the formula, the person represents a benzene nucleus or a naphthalene nucleus, X represents a hydrogen atom, a metal ion or an ammonium group, R
represents a hydrogen atom, a hydroxyl group, or an alkyl group having 20 or less carbon atoms, and n represents an integer of 1 to 5.