Insecticidal composition for combating heliothis armigera and method of destruction of heliothis armigera

 

(57) Abstract:

Usage: in agriculture, as a chemical means of plant protection. The essence of the invention: insecticidal composition for combating Heliothis armigera contains 10-60 wt.% a mixture of S-2-cyano-3-phenoxybenzyl- (S)-2-cyano-3-phenoxybenzyl-(S) -2-(4-chlorophenyl)-3-methylbutyrate and organophosphorus compounds selected from fenitrothion, Malathion, dimethoate, omethoate, profenofos, when the mass ratio of from 1:3 to 1:20, and the rest of the target additives. Way to destroy Heliothis armigera by processing plants specified composition comprising 4,13-of 60.5 mg/m2the active mixture. 2 C. p. F.-ly,4 PL.

The invention relates to insecticidal composition having efficacy in the fight against Heliothis armigera and to use this song the way of dealing with the specified pest.

Extensive research has been conducted aimed at developing composition having high efficiency in combating box worm (Heliothis armigera), damaging plants such as cotton, corn, soybeans, etc. as a result of the research showed that the insecticidal composition containing (S)- -cyano-3-phenoxybenzyl-(S)-2-(4-chloro - phenyl)-3 - methylbutyrate (referred to in dalnir organophosphates as active ingredients, has an extremely high insecticidal activity even against resistant to PYRETHROID compounds Heliothis armigera, which is achieved due to the synergistic action of the active ingredients:

fenitrothion [0,0-dimethyl-0-(4-nitro-m-tolyl)-phosphorothioate] hereinafter referred to as "compound [2a]";

Malathion [S-1, 2-bis(etoxycarbonyl)ethyl-0,0 - dimethylphosphorodithioate] hereinafter referred to as "compound [2b]";

dimethoat [0,0-dimethyl-S-[2-(methylamino)-2-oxoethyl] phosphorodithioate] hereinafter referred to as "compound [2c]";

omethoate [0,0-dimethyl-S-[2-(methylamino)-2-oxoethyl]phosphorothioate] hereinafter referred to as "compound [2d]", which oxonium analogue of dimethoate;

profenofos [0-(4-bromo-2-chlorophenyl)-0-ethyl-S-propylphosphonate] hereinafter referred to as "compound [2e]".

To achieve the highest insecticidal activity against mixing compounds [1] and compound [2a] [2e] in the proposed composition is usually from 1: 1 to 1:20 by weight, preferably from 1:3 to 1:20 by weight. If we take into account also the efficiency in practical use, it is more preferable that the mixing ratio of compound [1] with the compound [2a] [2d] ranged from 1:5 to 1:10, and with the connection [2e] odimo, add to the mixture a surfactant and other accessories, then produce the resulting mixture drugs such as emulsifiable concentrate, ULV-agent, wettable powder, flowable agent, such as a suspension in water or emulsion in water, etc.

These drugs contain the connection [1] and compound [2a] [2e] (active ingredients) in an amount of 1-95 wt. preferably 5-60 wt.

Examples of solid carriers used in preparations include fine powders of kaolin, hard-shelled earth, synthetic hydrated silicon dioxide, bentonite, pyrophyllite, talc, gypsum, ceramic, sericite, quartz, sulfur, activated carbon, calcium carbonate, chemical fertilizers (ammonium sulfate, ammonium phosphate, ammonium nitrate, urea, ammonium chloride, etc.,) etc., Examples of liquid carriers include water, alcohols (methanol, ethanol etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.,), aromatic hydrocarbons (toluene, xylene, alkylbenzene, methylnaphthalene, etc.,), aliphatic hydrocarbons (hexane, cyclohexane, kerosene, light oils, etc.,), esters (ethyl acetate, butyl acetate, diisobutylaluminum and etc.), NITRILES (acetonitrile, isobutyronitrile and so and so p.), halogenated hydrocarbons (dichloromethane, trichloroethane, carbon tetrachloride, etc.,), dimethyl sulfoxide, vegetable oil (soybean oil, cottonseed oil, etc.,) and so on

Examples of surfactants include, for example, esters alkylene acids, salts alkylsulfonic acids, salts alkylarylsulfonates acid, alkylacrylate esters, their polyhexamethylenediamine derivatives, esters of polyethylene glycol, esters of polyalcohol derivatives of a sugar alcohol, etc.

Examples of auxiliary components used in the manufacture of drugs, such as with agents, dispersing agents, etc., include casein, gelatin, polysaccharides (starch powder, gum Arabic, alginic acid, etc.,), lignin derivatives, bentonite, sugars, synthetic water-soluble polymers (polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, cellulose derivatives, etc). Examples of stabilizers include PAP (acidic isopropylacetate), BHT (2,6-di-tert-butyl-4 - METHYLPHENOL), BHA (mixture of 2-tert-butyl-4-methoxyphenol and 3-tert - butyl-4-methoxyphenol), vegetable oils, mineral oils, surfactants, fatty acids and their esters, etc.

is gredients in water, containing 0.5-15 wt. dispersant, about 0.1-10 wt. thickener (e.g., thixotropic compounds) and 0-10 wt. necessary auxiliary components (for example, foaming inhibitor, rust inhibitor, stabilizer, filler, penetrating agent, antifreeze, antibacterial agent, etc.,). You can also prepare a suspension in oil, instead of using water poorly dissolving the active ingredients of the oily substance. Examples of thixotropic compounds include bentonite, mixed silicate of aluminum and magnesium, xantanovu resin, polyacrylic acid, etc.

Obtained above by drug type emulsifiable concentrate, wettable powder or a flowable agent, is usually used after dilution with water to a concentration of active ingredients from 1 to 10000 memorial plaques while ULV-agent is used directly. Drugs can also be used in the form of a premix with another insecticide, acaricide or fungicide if necessary.

The proposed composition is typically used in quantities of from 1 to 200 g, preferably from 10 to 100 g, per 100 m2(calculated on the total content of active ingredients).

When using the proposed compassionately if its application depends on the type of drug, time, place and method of application, the degree of resistance of pests to the insecticidal agents and can be increased or decreased, in spite of the above intervals.

The invention is illustrated in the examples for the preparation of drugs and test examples, but the invention is not limited to these examples.

Examples for the preparation of drugs.

P R I m e R 1. Emulsifiable concentrate get thoroughly mixing and dissolving together 10 wt.h. a mixture of compound [1] and compound [2a] the ratio of the mixing of these compounds are 1:3, 1:5, 1,7, 1:10, 1:15 or 1:20 by weight), 10 wt.h. emulsifier [Sorpol SM-200] (trademark of the product of the company Tojo KAGAKU) and 80 wt.h. xylene.

P R I m m e R 2. Emulsifiable concentrate get thoroughly mixing and dissolving together 10 wt.h. a mixture of compound [1] and compound [2b] (of a mixed form 1:3, 1:5, 1:7, 1:10, 1:15 or 1:20 by weight), 10 wt.h. emulsifier [Sorpol SM-200] (trademark of the product of the company Tojo KAGAKU) and 80 wt.h. xylene.

P R I m e R 3. Emulsifiable concentrate get thoroughly mixing and dissolving together 10 wt.h. a mixture of compound [1] and compound [2d] (the ratio of mixing is 1:3, 1:5, 1:7, 1:10, 1:15 or 1:20 by weight), 10 wt.h. emulsifier [oncentrate get thoroughly mixing and dissolving together 10 parts of a mixture of compounds N [1] and compound [2e] (the ratio of the offset is 1:3 or 1:5 by weight), 10 parts of emulsifier [Sorpol SM-200 (trademark of the product of the company Tojo KAGAKU)] and 80 parts of xylene.

P R I m e R 5. ULV-agent receive, thoroughly mixing and dissolving together 50 wt.h. a mixture of compound [1] and compound [2a] (the ratio of mixing 1:3, 1: 5, 1:7, 1:10, 1:15 or 1:20 by weight) and 50 wt.h. xylene.

P R I m e R 6. ULV-agent receive, thoroughly mixing and dissolving together 50 wt.h. a mixture of compound [1] and compound [2b] (the ratio of mixing 1:3, 1: 5, 1:7, 1:10, 1:15 or 1:20 by weight) and 50 wt.h. xylene.

Test examples.

P R I m e R 7. Emulsifiable concentrates obtained in examples 1-4, and emulsifiable concentrates obtained in the same way, but containing only one of the active compounds were tested as follows.

Larvae of Heliothis armigera 3rd stage were placed in a round mesh cage with a diameter of about 5 cm and immersed her 30 with approximately 100 ml of the diluted water emulsifiable concentrate. After removal of excess water from treated larvae with the help of filter paper were placed in a plastic Cup containing artificial food, and set ulitity are given in table.1.

P R I m e R 8. Field trials were conducted with the use of emulsifiable concentrates prepared in examples 1, 3 and 4.

A field of cotton plants infected Heliothis armigera (infection formed spontaneously), divided into plots of 30 m2and each of the emulsifiable concentrates, diluted with water to a predetermined concentration, once sprayed with a pre-selected area (volume based 110 l per 10 g). For each dilution test conducted at three sites. The number of larvae of Heliothis armigera on 30 plants within each plot calculated before spraying and after 1, 3 and 5 days after spraying. Based on the results of the calculation by the equation (1) calculated degree of efficiency. The results are presented in table.2.

The degree of effectiveness (1-ayi/ /bxi) x100 (%), (1) where and the number of larvae before spraying on uncultivated land;

b the number of larvae before spraying on arable land;

xi the number of larvae through the first days after spraying on uncultivated land;

yi the number of larvae through the first days after spraying on the treated area.

P R I m e R 9 (composition of the drug). Emulsifiable concentrate receive a thorough, :10, 1: 15 or 1:20 by weight), 10 wt.h. emulsifier [Sobol SM-200] (brand name of product Tojo KAGAKU) and 30 wt.h. xylene.

P R I m e R 10 (test). The experiment was carried out analogously to example 7, except that used the ratio of components in the mixture of active ingredients that are listed in the table.3. The results are shown in table.3.

P R I m e R 11 (preparation preparation). Emulsifiable concentrate was obtained by thoroughly mixing and dissolving together 10 wt.h. a mixture of compound [1] and compound [2c] (their ratio in the mixture was 1:3, 1:5, 1: 7, 1: 10, 1: 15 or 1:20 by weight), 10 wt.h. emulsifier [Sobol SM-200] (brand name of product Tojo KAGAKU) and 80 wt.h. xylene.

P R I m e R 12 (trials). The experiment was carried out analogously to example 7 except that used the emulsifiable concentrate obtained in accordance with example 11. The results are shown in table.4.

1. Insecticidal composition for combating Heliothis armigera, comprising active ingredient - mix-cyano-3-phenoxybenzyl-2-(4-chlorophenyl)-3-methylbutyrate and organophosphorus compounds, and additives target, characterized in that as a-cyano-3-phenoxybenzyl-2-(4-chlorophenyl)-3-methylbutyrate she soyedineniya, selected from Oh, O-dimethyl-1-O-(4-nitro-m-tolyl)phosphorothioate, S-1,2-bis(etoxycarbonyl)ethyl-O-dimethylphosphorodithioate, o, O-dimethyl-S -[2-(methylamino)-2-oxoethyl] phosphorodithioate, o,O-dimethyl-S-[2-(methylamino)-2-oxoethyl]phosphorothioate, O-(4-bromo-2-chlorophenyl)-O-ethyl-S-propylpentanoate, when the mass ratio of from 1 : 3 to 1 : 20 in the following ingredients by weight percent:

The active ingredient is 10 - 60

Targeted supplements - Rest

2. Way to destroy Heliothis armigera by treating the plants with a composition including the active ingredient is a mixture of a-cyano-3-phenoxybenzyl-2-(4-chlorophenyl)-3-methylbutyrate and organophosphorus compounds, and additives target, characterized in that the composition as a-cyano-3-phenoxybenzyl-2-(4-chlorophenyl)-3-methylbutyrate it contains (S)- a-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methylbutyrate, as the organophosphorus compound is a compound selected from Oh,O-dimethyl-o-(4-nitro-m-tolyl)phosphorothioate, S-1,2-bis(etoxycarbonyl)ethyl-O-dimethylphosphorodithioate, o, O-dimethyl-S-[2-(methylamino)-2-oxoethyl] phosphorodithioate, o,O-dimethyl-S-[2-(methylamino)-2-oxoethyl] phosphorothioate, O-(4-bromo-2-chlorophenyl)-O-ethyl-S-propylpentanoate, when the mass ratio of from 1 : 3 to 1 : 20 the next time the content of the e 4,13 - of 60.5 mg/m2the active ingredient.

 

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