JPS632907A - Seed disinfectant - Google Patents

Abstract

PURPOSE:To provide a seed disinfectant containing a compound such as procymidone, etc., and (-)-(E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1- yl)-1-penten-3-ol and imazalil as active components. CONSTITUTION:The objective seed disinfectant having broad antibacterial spectrum and exhibiting stable blight-controlling effect even against resistant bacteria is produced by using an N-(3,5-dichlorophenyl) imide compound (e.g. iprodione) and (-)-(E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triaz-ol-1-yl)-1- penten-3-ol as active components. The seed disinfectant is effective against Septoria tritici of wheat, Helminthosporium gramineum of barley, Ustilago avenae of oats, Pyricularia oryzae and Gibberella fujikuroi of rice, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to the use of one or more N-(3,5-dichlorophenyl)imide compounds and (-)-(E)-1-(2,4- dichlorophenyl)-4,4-dimethyl-2-(1,2,
The present invention relates to a seed disinfectant containing 4-triazol-1-yl)-1-penten-8-ol as an active ingredient.

<Conventional technology> Conventionally, to control yuzu infectious diseases, benomyl agents, thione mononate methyl agents, thiuram agents, carboxin agents, P
ONB agents, organic mercury agents, or mixtures thereof are used.

<Problems to be solved by the invention> However, the above-mentioned drugs are effective against only a limited number of diseases, and resistant bacteria appear in some of the pathogenic areas that previously exhibited antibacterial activity, reducing their control effectiveness. is becoming a problem.

<Means for solving the problems> In view of this situation, the moss of the present invention has been used in various ways to develop a seed disinfectant that has a broad antibacterial spectrum and has a stable disease control effect even against the above-mentioned resistant bacteria. As a result of consideration, N-
(3,5-dichlorophenyl)imide compound tFor example, N-(fi.

6-dichlorophenyl)-1,2-dimethylcyclopropane-1,2-dicarboxylic acid (-grain temperature: procymidone, hereinafter referred to as compound (1)), 8-(3,5-
dichlorophenyl)-N-isopropyl-2,4-dioxoimidasilidine-1-carboxamide (-ship name:
Iprodione, hereinafter referred to as compound (2). ), 8-
(- )-(E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-C1,2,4-triazol-1-yl)-1-penten-8-ol (
Hereinafter, it will be referred to as compound (A). ) It was discovered that a seed disinfectant containing as an active ingredient not only has the above-mentioned properties but also has an excellent synergistic effect, leading to the present invention.

The present invention will be explained below.

The compound (mu), which is one of the active ingredients of the seed disinfectant of the present invention, is one of the group of compounds described in JP-A-57-99575, and is N-(3,5-dichlorophenyl).
Imide compounds have excellent control effects on various crops such as sclerotium, gray mold, and gray rot on fruit trees, and have been used in Japan since 1988.

The seed disinfectant of the present invention can be used as is or it is usually mixed with a carrier. Also,
If necessary, various formulation auxiliaries such as surfactants, wetting agents, fixing agents, thickeners, stabilizers, etc. may be added to formulate wettable powders, powders, flowables, emulsions, etc. for use. It will be done.

The content of active ingredients in these preparations ranges from 0.1 to 0.1 by weight.
99.9%, preferably in the range of 0.1 to 80%, and the mixing ratio of the compound (mut) with the (8,5-9-oaphenyl)imide compound is preferably 1:1 to t+100 by weight, l! It is in the range of 1 to 1:1O.

The carriers for the above formulations include kaolin clay, attapulgite clay, bentonite, acid clay, pyrophyllite, talc, diatomaceous earth, calcite, kuru [cereal flour, urea,
Solid carriers such as fine powders or granules such as ammonium sulfate and synthetic hydrous silicon hydride, aromatic hydrocarbons such as xylene and methylnaphthalene, alcohols such as isopropanol, ethylene glycol, and cellosolve, acetone, cyclohexanone, isophorone, etc. Liquid carriers include ketones, vegetable oils such as soybean oil and cottonseed oil, dimethyl sulfoxide, acetonitrile, water and the like. Surfactants used for emulsification, dispersion, wet layer, etc. include alkyl sulfate salts, alkyl (aryl) sulfonate salts, dialkyl sulfosuccinate salts, polyoxyethylene alkylaryl ether phosphate salts, and naphthalene sulfonic acid salts. Anionic surfactant of formalin s compound e, nonionic interface of polyoxyethylene alkyl ether, polyoxyethylene alkylaryl ether, polyoxyethylene polyoxybutyrene block copolymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, etc. Examples include activators and the like. Examples of formulation adjuvants include lignin sulfonate, alginate, polyvinyl alcohol, gum arabic, 0M0 (carboxymethyl cellulose), and PAP (isopropyl acid phosphate).

When the seed disinfectant of the present invention is used for seed dressing treatment, the amount used is usually 0.01% to 10% of the dry seed weight, and when seed immersion treatment is performed, the amount of the active ingredient is As an amount, 0.001 to 0 per dry seed N, t
．． A range of 1% is preferable, but such usage conditions may vary depending on the form of the preparation and the type of crop seed to be treated. Furthermore, by using the seed disinfectant of the present invention in combination with other fungicides such as basic copper chloride and hydroxyisoxazole, a wider range of seed diseases can be controlled. In addition, by mixing anthraquinone, it can have a bird repellent effect, and it can also be used in combination with other porcelain treatment agents.

A specific example of a seed-borne disease for which the seed disinfectant of the present invention is effective is wheat leaf blight (8a% orlatriti
oi), Loptosphaeria n.
odorum), sloth smut (Ti1letia
oariem), naked smut (Ustilago tr
itioi), seedling damping-off (Fusar- um sp.
, ), black eye grain (0oohliobolus 5at
ivus, barley spotted leaf disease (Helmlnthosp)
orium gr.
(Ust order ago unda), net spot disease (Pyreno
phora ter@s), cloud disease (Ilhynoh)
-osporium 5eoalis), Osporium blight (
fieptoyia sq.), Ustil
Ago horde! ), x: / tapir naked smut (Ustilago avenas), leaf blight (P
yre-nophora 1venae), U4A4
[) Smut ('I'1ll-・tla oari・1)
, rice blast disease (Pyrioula-ria ory
xaa), sesame leaf blight (Ooehliobolusm
lyabaanus), Bakanae disease (G1bb@rs
lla fujik-uroi), etc.

<Example> The present invention will be explained in detail below using formulation examples and test examples. Note that parts represent parts by weight.

Formulation Example 1 Powder compound (41 parts, compound (1) 4 parts, basic copper chloride 10
10 parts of anthraquinone, 65 parts of kaolin clay, and 10 parts of talc are thoroughly ground and mixed to obtain a powder containing 6% of the seed disinfectant of the present invention.

Formulation Example 2 Wettable powder compound (6 parts, compound (2) 25 parts, diatom ±40 parts, white carbon 26 parts, wetting agent (sodium lauryl sulfate) 8 parts and dispersant (calcium lignin sulfonate) 2 parts. By thoroughly grinding and mixing, an 80% wettable powder is obtained.

Formulation Example 8 Suspension agent 1 part of compound (A), 11 parts of compound (3), 8 parts of polyoxyethylene sorbitan monooleate, 8 parts of 0M0, and 82 parts of water are mixed so that the particle size of the active ingredient becomes 6 microns or less. A 12% suspension is obtained by wet milling to a maximum of 12%.

Formulation Example 4 Emulsion compound (g) 6 parts, compound (1) 6 parts, emulsifier 12 parts,
45 parts of cyclohexanone and 88 parts of xylene are mixed to obtain a 10% emulsion. .

Formulation example 5 Compound (A) 10 parts, Compound (1) 50 parts, Diatomaceous earth 2
A 60% wettable powder is obtained by pulverizing and mixing 0 parts of white carbon, 16 parts of white carbon, 8 parts of a wetting agent (sodium lauryl sulfate), and 2 parts of a dispersing agent (calcium lignin sulfonate).

Test Example 1 Wheat smut control effect Wheat smut [1 ('1' order 1etia abuty r-smut)
Wheat seeds inoculated and infected with (Product 11: Norin No. 61) 1
0F was soaked for 24 hours in a diluted water solution of the hydrating agent of the present invention at a predetermined concentration prepared according to Formulation Example 2, and then field seeds were sown and cultivation was continued. After heading, the disease state of the ears was examined and the healthy seedling rate was calculated.

The results are shown in Table 1.

Table 1 is shown in Test Example 2. Effect of controlling barley spotted leaf disease.
Barley seeds (variety: New Golden) IQP infected with M. mgraminaum were sprayed with the suspension of the present invention prepared according to Formulation Example 8, and then sown in the field and cultivated. The disease state was investigated and the percentage of healthy seedlings was determined in the same manner as Test Example 1. The results are shown in Table 2.

Table 2 Test Example B Effect of controlling rice bakanae disease Preparation Example 2 on rice rice (variety: FC Ki88) contaminated with benomyl-susceptible and benoyl-resistant Gibberella fujikuroi
The powder or commercially available seed fungicide of the present invention prepared according to
A predetermined amount of benlate (T) was coated with powder, and then 100 seeds per pot were sown in plastic pots filled with sandy loam and covered with soil. Next, the disease state after cultivation in a greenhouse for 16 days was investigated, and the disease rate was determined in the same manner as in Test Example 1.

The results are shown in Table 8.

,゛.

1P1 (,5! = ,,,=,, / Table 8 Hata I Commercial seed disinfectant (mixture of benomyl and thiuram) WN2 Test using rice grains contaminated with benomyl-susceptible bacteria.

Glue 3 T2 test using benohiru 1 sex 1 contaminated massager.

<Effects of the Invention> The seed disinfectant of the present invention exhibits high control effects against various seed-borne diseases, has a broad antibacterial spectrum, and is effective against resistant bacteria that have developed resistance to conventional chemicals. Shows stable pest control effect.

t 19 White) Procedural amendment (voluntary) March/2, 1988 1, Indication of the case 1932/1937 Patent 1 No. 1 n'f/7 2, Name of the invention Seed disinfectant 3, Person making the amendment Relationship to the incident Patent applicant Hideo Mori 5-15 Kitahama, Higashi-ku, Osaka (209) Representative Sumitomo Chemical Co., Ltd.
3.4, Agent Address: 5-15 Kitahama, Higashi-ku, Osaka, Japan (06) 220-34045, Column 6 of Detailed Description of the Invention in the Specification Subject to Amendment, Contents of Amendment [Seeds of the Invention] Disinfectants can be used for dressing, dipping, wiping, etc.

When the seed disinfectant of the present invention is used for seed dressing and dusting treatment, the amount used is usually in the range of 0.00001 N1% of the dry seed weight as the amount of active ingredient. In this case, the treatment concentration of the active ingredient is preferably in the range of 0.01 to 1,100,000 pp, but such usage amount may vary depending on the form of the preparation and the type of crop seed to be treated. ” he corrected.

that's all

Claims (1)

[Claims] N-(3,5-dichlorophenyl)imide compound 1
and (-)-(E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-1-penten-8-ol A seed disinfectant characterized by containing as an active ingredient.