JPS5846009A - Insecticide and acaricide - Google Patents

Abstract

PURPOSE:An insectide and acaricide showing specificaly highly synergistic and controlling activity and safety to crops, obtained by using both at least one macrotetrolide antibiotic and O,S-dimethyl-N-acetylphosphoroamidothioate. CONSTITUTION:An insectcide and acaricide obtained by blending at least one macrotetrolide antibiotic shown by the formula (R1-R5 are lower alkyl) is blended with O,S-dimethyl-N-acetylphosphoro-amidothioate in a ratio of about 1:(0.1-10)pts.wt. USE:Having a specific action especially on Panonychus citri McGregor.

Description

[Detailed description of the invention]! Next, ff10te) 09(de(maorot@trol)
It is known from Japanese Patent Publication No. 49-6656 that a mixture of an il.) antibiotic and an organic compound is used as an insecticide and acaricide.

The present invention is based on a specific combination not specifically described in the publication, namely, at least 1% of macrotetrolide antibiotics shown by the chemical structure shown below and O,a-dimethyl-natsu-acetylphospho 1N. Regarding a new insecticide and acaricide containing a mixture with dothioate (generic name "acephate") as an active ingredient, its purpose is to specifically act against various insect pests and mites, especially the citrus spider mite. The object of the present invention is to provide a drug that can control these extremely effectively.

The polymer used in the present invention (%)
R1% R2s ”! and R4 each represent a lower alkyl group).

In recent years, mites have become a problem as well as various pests of cane and fruit trees, and P1 insecticides and acaricides have been actively developed. However, due to various reasons, there are currently very few melonicides and acaricides that are highly practical. The prefectural requirements for new insecticides and acaricides include not only excellent insecticidal and acaricidal effects, but also fast-acting agents from the standpoint of safety and health when using chemicals or ingesting cultivated crops. Therefore, there is a need for a substance that has no residual toxicity and is pseudotoxic to humans and animals. Furthermore, on the one hand, it is necessary to have an appropriate residual effect.

In order to develop an insecticide or acaricide that meets these requirements, the present inventors tested various agents and conducted extensive studies. ! I decided to use a mixture of clotetrolide antibiotics and acephate, an organophosphorus insecticide, IM! The present invention has been based on the discovery of a drug that exhibits a high synergistic control activity specifically against insect pests and mites of fruit tree species in China, China, and the United States, and which can be safely used without causing chemical damage to crops. completed.

The macrotetrophyte antibiotic used in the present invention is
It has already been put into practical use as an acaricide containing a polynactin complex. However, although these antibiotics have fairly high control effects against mites, their duration is short.

The insecticidal power against various insect pests is insufficient compared to the 9-killing effect. Therefore, the ninth acaricide that complements this is opcBa (p-tribenzenesulfonic acid p-
・BP which is a mixture of chloro7ael) or an insecticide
Currently, it is put into practical use as a mixture with MO (methyl carno f-O-sec-butylphenyl).

On the other hand, the active ingredient acephate has excellent control effects against sweat-absorbing pests such as planthoppers and s*pis, as well as chewing pests such as green caterpillars and kona, and yellow-eyed caterpillars and lady beetles. It is useful as an insecticide°. However, a sufficient acaricidal effect cannot be expected when used alone.

The acaricidal and acaricidal agent of the present invention can fully utilize the inherent advantages of Mactetrolide antibiotics and acephate, and also have mutually effective insecticidal and acaricidal effects, which were not expected to have sufficient control effects with each layer agent. However, the effects are synergistic and are far beyond the expectations of those skilled in the art. A comparison between the insecticide and acaricide of the present invention and the technique described in Japanese Patent Publication No. 49-6456 shows the following results. In other words, as is clear from the test examples described below, the drug of the present invention has a superior control effect on spider mites, spider mites, and green leaf aphids, compared to the comparative drugs. The insecticide and acaricide of the present invention contains macrotetrophic antibiotics and acephate. It is not only economical, but also economical, since the dosage can be significantly reduced compared to when each of these is applied individually.

It does not cause any chemical damage to useful crops and can be used safely for humans and livestock.

It is one of the active ingredients of the insecticide and acaricide of the present invention! Clotetra2ide antibiotics are classified as 1, for example by the Swiss Chemical Society (
H@rvetioa Oh@m1oa Acta)
J No. sa @ pp. 1445-1448 (1955), Vol. 4S, No. 129-1! I8 page (1942) and the same 45% No. 620-650 purchase (1962) and the method described in KW Publications No. 46-28100 and No. 49-1842, etc., or Streptomyces naureus ( It is also produced by a method of culturing ymaM-p Nn253). Due to differences in manufacturing methods or purification processes, these antibiotics may have substances with the same chemical formula that are considered to be various stereoisomers with slightly different physical and chemical properties, but no significant differences have been observed in their insecticidal and acaricidal activity. Any substance can be used without distinction in the present invention.

The compounding ratio of the active ingredients of the insecticide and acaricide of the present invention is α1 to 10 parts by weight of acephate per 1 part by weight of the macrotetro2oid antibiotic, but the ratio may be increased or decreased as necessary. You can also do that. Nine, other insecticides,
When used in combination with acaricides, fungicides, plant regulators, etc., it can be effectively used as a labor-saving pest control agent.

The insecticidal Sedae agent of the present invention is a powder with a known formulation.

It can be prepared and used in an appropriate form such as an emulsion, an aqueous solution, an oil solution, or a fine granule. As the carrier, any solid or liquid carrier commonly used for agricultural and horticultural chemicals can be used. For example, liquid carriers include kijirol, cyclohexanone,
Examples include solvents such as methyl ethyl ketone, and solid carriers include kaolin, Merck, bentonite, diatomaceous earth,
Examples include silica and clay. In addition, auxiliary agents used in agricultural and horticultural chemicals, such as emulsifiers, wetting agents, spreading agents, dispersants, etc., can be used as appropriate.

Next, an example of the insecticide and acaricide of the present invention will be given, but the present invention is not limited to the following example.

In addition, in the following examples, all parts indicate parts by weight, and in the examples, compounds (1) to (5) are 1 of the general formula
The following are shown among 1-14.

Compound (') 11mR1-11mR4-oH1 Compound ('') R1-R1mR1-0RB R4'''0
1114 compound (萄n1-RIW-OH-R1-R4-
0211!1 Compound (4) R1=OH3R1-R1
==R4==OfiH5 compound (5) R1-R4-RH
-R4=02HB Example 1 15 parts of emulsion compound (010 parts, 2 Ω parts of acephate, New Calgen 2115-PO (trade name of surfactant manufactured by Takemoto Yushi Kogyo Co., Ltd., the same applies hereinafter) and 55 parts of Xyl were uniformly mixed. to obtain an emulsion.

Example 2 Emulsion Compound (1) to 8 parts of a mixture of compounds (8 parts of acephate, 15 parts of Enycaldine 2115-PO and 47 parts of xyl alcohol) are uniformly mixed to obtain an emulsion.

l! Example 5 Wettable powder compound (5) 10 parts, ace7a) 4ON! , polyvinyl alcohol 21111, 10 parts of sodium sulfur/ninsulfonate, and 58 parts of clay were uniformly mixed and pulverized to obtain an irrigation agent.

Example 4 Wettable powder compound (1) to compound (10 parts of mixture of ω, ace7:”
50 parts of 9-vinyl alcohol, 2 parts of 9-vinyl alcohol, 10 parts of sodium 9-danine sulfonate, and 48 parts of Hikre were uniformly mixed and pulverized to obtain an irrigation agent.

Next, the usefulness of the insecticide and acaricide of the present invention will be explained by giving test examples.

Test Example 1 Test for control effect on green beans planted in pots Female adult two-spotted spider mites, which have been reared for generations in a thermostatic chamber, are inoculated at 20wR each onto the true leaves of green beans planted in pots, where the first leaves have fully developed. . And the pot at 25C
After leaving it in a greenhouse for 24 hours, a test chemical solution diluted to a predetermined concentration was sprayed with a spray gun until the chemical solution dripped from the a and *. 48 hours after treatment KjiU
The mortality rate is calculated by counting the number of live and dead ills, and the carelessness rate -) is calculated using the Abbott correction formula.
It was conducted using a pot system and the flat rate was calculated. The results are shown in Table 1. In Table 1, VIP is 0.0-diethyl o-5-methyl-4
-nidotetraphenyl phosphorothioate.

Test Example 2 Control effect test on spider mites A predetermined dilution of an irrigation agent prepared according to Example 5 was sprayed on potted Satsuma mandarin oranges (tree height approx. 603cm) in which spider mites had grown, each pot 200m long. After that, the number of parasitic citrus spider mites was checked every predetermined number of days to determine the control value. A 6-plant test was conducted using 5 pots per rock, and the average control value was calculated. The results are shown in Table 2.

In Table 2, PAP is 8-[alpha-ethyl]
zyl) o,o-J) methylphosphodithioate.

Test Example Bq Control effect on Moaka aphid A diluted solution of a predetermined concentration of an irrigation agent prepared according to Example 5,
A 6aI-cut piece of Yapetsu slip was soaked in the water, air-dried, and placed in a plastic petri dish with a diameter of 9a. Wingless adults of the green peach beetles were released into the dish in 2011, and the number of dead and alive insects was determined after 48 hours. The 0 test that calculated the turning rate was 111.
It was carried out using a petri dish system, and the average supine insect rate was calculated. Shown below.

In Table S, 0! P represents 0-4-cyano7Z2kO,O-dimethylphosphotetrathioate, and dialinone represents 0,0-diethyl o-2-isopropyl-6-methyl-
Indicates 4-pyrimidinyl phosphorothioate.

Claims (1)

[Claims] (In the formula, R1% ts R1 and R4 each represent a lower alkyl group) A mixture of at least one macrotetrolide antibiotic and O,a-dimethyl-iris-acetylphospho 1N dothioate An insecticide goo characterized by containing it as an ingredient.