JPS59212407A - Disease-combatting method for useful plants - Google Patents

Abstract

PURPOSE:A combination of a soluble salt of dithiocarbamic acid and any of iprodione, procymidone, vinclozolin and myclozolin is applied to develop synergism to effectively control diseases in useful plants. CONSTITUTION:At least one of a soluble salt of dithiocarbamic acid as ammonium ethylenebisdithiocarbamate and at least one selected from the group consisting of iprodione: 3-(3,5-dichlorophenyl)-N-isopropyl-2,4-dioxoimidazoline-1-carboxamide, procymidone: N-(3,5-dichlorophenyl)-1,2-dimethyl-cyclopropane-1,2-dicarboximide, vinclozolin: 3-(3,5-dichlorophenyl)-5-methyl-5-vinyloxazolidin-2,4-dione and myclozolin: 3-(3,5-dichlorophenyl)-5-methoxy-methyl-5-methyl-1,3-oxazolan- 2,4-dione are simultaneously applied to effect disease control.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling diseases of useful plants, and more particularly to a method for controlling diseases of useful plants, and more particularly, a method for controlling diseases of useful plants, and more specifically, a method for controlling diseases of useful plants, and more specifically, a method for controlling diseases of plants using a soluble salt of dithiocarbamic acid and 3-(3,5-dichlorophenyl)-N-inclovir=2,4-dio Quinimidazolidine-1-carboxamide (Iprodione)
IN-(3,5-dichlorophenyl)-1,2-dimethylcyclopropane-1゜2-dicarboximide (crocymidone), 3-(3,5-dichlorophenyl)-5-
Methyl-5-vinyloxazolidine-2,4-dione (
At least one member selected from vinclonolin) and 3-(3,5-dichlorophenyl)-5-methoxymethyl-5-methyl-1,3-oxazolane-2,4-dione (micronolin) at the same time. The present invention relates to a method for controlling diseases of useful plants, which is characterized by applying the present invention.

The dithiocarbamic vinegar soluble salts described above have wide applications as disinfectants. On the other hand, iprodione, clocymidone, vinclozolin, and micronolin are fungicides that specifically inhibit the onset of gray mold, sclerotium, or sheath blight. On the other hand, the effective diseases are limited.

There are diseases such as tomato late blight and cucumber root blight for which no control effect can be obtained even if applied. Also.

There have been many reports of complaints that once resistant bacteria develop, the bacteria acquire resistance to these drugs, resulting in a decrease in their control effectiveness. The problem of developing drug resistance in pathogenic bacteria and avoiding it involves complex biological (or molecular biological) content, and it is difficult to understand it easily. It is important to avoid the development of drug-resistant bacteria, and for this purpose, avoid repeated use of the same (or related) drugs, use two new drugs one after another, or mix drugs with different mechanisms of action, or Although its systematic use has been proposed, it has not been resolved qualitatively.

Therefore, the present inventors combined these fungicides with other types of compounds to eliminate such congenitally resistant pathogenic bacteria,
Or, as a result of repeated efforts to establish effective control methods for diseases caused by pathogenic bacteria that have acquired resistance during use, we have found that the above-mentioned ibrodiperin, clocymidone, vinclonorin, and microzolin They discovered that by simultaneously applying a chemical agent and a soluble dithiocarbamic acid salt to plants, a synergistic effect that was completely unexpected when each compound was used alone was achieved.

Conventionally, compounds of the present invention such as pro/midone and dithiocarbamic acid heavy metal salts 2, such as zineb agent.

Do not apply at the same time as Ziram or Maneb.

Although it is described in Japanese Patent Publication No. 47-43813, etc.,
In reality, no synergistic effect can be expected. In contrast, the soluble dithiocarbamic acid salts of the present invention exhibit a synergistic effect for the first time.

Soluble salts of dithiocarbamic acid are, of course, excellent fungicides even when used alone and are toxic to humans and livestock, so their use in controlling diseases of agricultural and horticultural crops has been widely developed and expanded. but.

Although it has a wide range of uses and can be used for many purposes, it is also true that among a wide range of diseases, there are some diseases that are somewhat difficult to control in terms of residual effects.

The pest control method of the present invention solves these difficulties and can further expand the range of disease control.

The acid moiety of the dithiocarbamic acid soluble salt of the present invention is
Examples include alkylene bisdithiocarbamic acid, monofunctional monoalkyldithiocarbamic acid, and monofunctional dialkyldithiocarbamic acid, and examples of the monocyclic moiety include sodium, potassium, ammonium, magnenium, calcium, amine, sodium-potassium, sodium-ammonium, etc. can be mentioned.

Both components of the present invention can be applied in any ratio as desired, but preferably the ratio of dithiocarbamic acid soluble salt to iprodione, etc. can be used in the range of 1 ol to 1.10.

In carrying out the present invention, it can also be applied in combination with a carrier. 2 Commonly used forms 2 For example, water-based agents,
Emulsions, water solvents, oils, flowables.

It can also be used as an airol agent. The carrier used is a liquid such as water. The above products can be diluted with water or the like, or can be used without dilution by means such as spraying, rinsing, dipping, or coating.

Further, each component according to the present invention may be used in combination at the time of application, or it is also possible to apply each component without mixing at the time of application. In addition to the two active ingredients of the present invention, other insecticidal ingredients,
It is also possible to apply fungicidal components, synergistic agents, fertilizer components, soil conditioners, etc. at the same time.

The effects of the present invention will be specifically explained below using test examples.

Example 1 A cucumber (variety: Tokiwa Hikari No. 6 P type) at the 7th to 8th leaf stage that was being cultivated in the field was used to test the effect of controlling cucurbits and diseases by spraying. Chemical spraying was carried out five times at one-week intervals starting from May 21st, and one week after the final spraying, the number of lesions on the leaves was counted, and control was calculated from this. The results are shown on the bottom manure.

Note) 1) The values in the table are the control value of each combination when applied during opening. 2) Component: A; 3-(3,5-dichlorophenyl)-゛N-
Ingchlor-2,4-dioquinimidanolidine-1-carboxamide BIN-(3,5-dichlorophenyl)-1,2-cy
'fruncropropane-1°2-dicarboximide E; to ammonium ethylenebisdithiocarbamate; to manganese ethylenebisdithiocarbamate 3) The control value was calculated by the following 2.

However, the untreated plot and treated plot here refer to the disease incidence rate, disease index, or number of lesions in the untreated plot and treated plot. (According to the example described in Itcho.) Example 2 A spraying test was conducted using 7 tass (variety: Gunterley 666) cultivated in a vinyl greenhouse.

Spraying was carried out twice on November 16th and November 21st.

During this period, on November 17th, artificial inoculation was performed using separately prepared lettuce leaves infected with gray mold. On December 3rd, the degree of disease at the inoculation site was determined to be no disease or small lesions.

The investigation was conducted into four classes: medium lesions and large lesions. The results are shown in the table below.

Note) 1) Components A, B and 2 are as in Example 1.

F; Potassium ethylene bisdithiocarbamate 2) Morbidity index: No XO + zJ-x1 + Medium x 60 Large x 5
Calculated by.

Example: Kiucumber in a plastic greenhouse (variety: Tokiwa Hikari No. 3 P type)
were cultivated, and a disease control test was conducted using chemical spraying. Spraying was carried out four times from December 10th at intervals of 10 to 12 days, and a disease onset investigation was conducted 10 days after the final spraying. The results are shown in the table below.

Note> 1) A, B, E and K are based on Examples 1 and 2.

C; 3-(3,5-dichlorophenyl)=5-methyl-5-vinyloxasolidine-2,4-dione D; 3-(5,5-dichlorophenyl)-5-methoxy/methyl- 5-Methyl-1,6-oxazolane-2,4-dio/Example 4 Gray mold disease caused by chemical spraying on tomatoes (cultivar: Shinsho Fukuju) grown in a vinyl greenhouse.

A pest control test was conducted. Spraying was carried out six times at 10-day intervals from June 20th, and the rate of diseased leaflets was measured one week after the final spraying, from which control l1lli'5f was calculated.

The results are shown on the lower garment.

Note) 1) B and E are based on Example 1.

G; Carunium ethylene bisdithiocarrenocinate I(;ammonium monomethyldithiocarnocuminate 1; Ammonium dimethyldithiocarnocinate Propylene bisdithiocal/ammonium cimate patent applicant Tokyo Organic Chemical Industry Co., Ltd.

Claims (1)

[Claims] At least one or more soluble salts of dithiocarbamic acid, 3-(3,5-dichlorophenyl)-N-inonorovir-2,4-dioquinoimidazolidine-1-carboxamide, N-(3,5-dichlorophenyl) -1,
2-dimethylcyclopropane-1,2-dicarboquinomide, 3-(3,5-dichlorophenyl)-5-methyl-
5-vinyloxazolidine-2,4-dione and 3-
(3,5-dichlorophenyl)-5-methoxymethyl-
A method for controlling diseases of useful plants, which comprises applying at least one kind selected from 5-methyl-1,6-oxazolane-2,4-dione at different times of the year.