JPS61263902A - Plant blight controlling agent - Google Patents

Abstract

PURPOSE:A controlling agent, containing ethanolamine, etc., as an active constituent, capable of exhibiting improved controlling effect on blast of rice plants, powdery mildew of vegetables, gray mold of decorative plants, e.g. petunia, having high safety without fear of environmental pollution and useful as an agricultural chemical. CONSTITUTION:A plant blight controlling agent containing a compound selected from ethanolamine, L-inositol and phytic acid (inositol hexaphosphate) constitut ing partially phosphatidyl ethanolamine expressed by formula I (X is formula II) and phosphatidyl inositol expressed by formula I (X is formula III) which are phospholipids present in animal and plant tissues, and having characteristics as a safe non-pollution agricultural chemical without any fear of environmental pollution as an active constituent. The above-mentioned active constituent is directly applied or formulated with a carrier or adjuvant into the dosage form of dust, wettable powder, emulsion, etc., and applied. Preferably, the com pounding ratio of the active constituent is about 10-90% as the emulsion or wettable powder, etc., and about 0.1-10% as the duct, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a plant disease control agent containing a compound selected from ethanolamide 7, L-inosit, and phytic acid as an H-active ingredient.

(Background of the Invention) Since soil contamination and residual toxicity in crops due to the use of agricultural chemicals have become a key money issue as so-called [F pollution], efforts have been made to develop particularly safe agricultural chemicals θ. Akira Hongo and his colleagues also carried out intensive research from this point of view, and as a result, they discovered that 7 g of soybeans was effective against powdery mildew of vegetables and rice blast. After that, the present inventor conducted research on the mechanism of action of soybean lecithin O, and found that the antibacterial activity of soybean lecithin O was effective in suppressing the infiltration of pathogenic bacteria. I discovered that there are 4 VCs. Soybean lecithin is
≠ phospholipid [i.e., phos-7 atisol ethanolamine, phos-7 atisol inosyto I, phos-7 atinorcholine, phos-7 atinorserine, etc.]
It is a compound in which ethanolamine-1-inositol and choline are bound to the phos-7γ nanol group, respectively.

Among these phospholipids, phosphatidylethanolamine and phos-7-acynolinositol showed remarkable inhibition of pathogen Q invasion by bioassay method. there were.

Therefore, the inventors of the present invention investigated the free θ compounds of the atomic groups bonded to the phosphatinol groups of the two O compounds mentioned above, namely, ethanolamine, inosit, or its derivative phytic acid (inosithegisa') 7m). As a result of the tests, it was found that the compound of the present invention exhibits an excellent control effect as shown in Test Example θ, which will be described later, and that phytic acid in particular has an extremely remarkable control effect against resistant bacteria. It was O who completed the present invention by obtaining the knowledge that it is extremely effective as a drug.

(Objective of the Invention) An object of the present invention is to provide a plant disease control agent that is highly safe and has an excellent control effect.

(Structure of the Invention) The active ingredients of the present invention are ethanolamine, inositol, and phytic acid. When used, there is no risk of environmental pollution, and it is an extremely safe, non-polluting pesticide that has the characteristics of θ.

The plant disease control agent of the present invention is highly effective against various plant diseases such as rice blast, vegetable powdery mildew, and gray mold on 0-year-old plants such as petunia.

f of the present invention! When applying the 1*J disease control agent, the above-mentioned active ingredient compound can be applied directly, or a suitable solid carrier, liquid carrier, emulsifying dispersant, etc. Using granules,
Powders, emulsions, wettable powders, tablets, oils, sprays, smoke propellants, etc.■
Optional O agent! It can be manufactured and applied. These carriers include Miclay, Kaori/, Pe/tonite,
Acid clay, pyogenes, calcium carbonate, solid carrier,
Nitrocellulose, 7J/g/, gum arabic, etc.
Liquid carriers include ice, methanol, ethanol, acetone, dimethylformamide, ethylene/grinyl, and the like. In addition, adjuvants commonly used in formulations, such as sulfuric esters of higher alcohols, diethylene in polyol, allyl ether in alkyl Φallyl polyethylene V/ glycol ether, alkyl
Allyl sorbita/monodiurate, alkyl allyl sulfonate, alkyl sulfo acid tm, alkylaryl sulfo/acid, □J-class am/monium salt, polyargyre/oxide, lignin sulfo/acid soda, dinaphthermethane Ireho/acid soda,/yosaccharide fatty acid ester, sorpita/j [m ester, monoglyceride, I
Ligloville/glycol i11#JJs ester etc. can be blended as appropriate. The appropriate blending ratio of the active ingredient θ is about 70 to 90% for emulsions, hydrating agents, etc.
For powders, oils, etc., O0/~10% is appropriate, but these 0 concentrations may be increased or decreased as appropriate depending on the purpose of use.

Next, Examples of the plant disease control agent of the present invention will be shown.

Examples/(Wettable powder) ethanolamine tO parts, monoglyceride 70 parts, f
A wettable powder is obtained by mixing and pulverizing 7 parts/j parts of casei/j parts of acid soda. It is used by dispersing it approximately 7,000 times with water.

Example - (Hydration A) 0 parts of L-inosit♂, 7.2 parts of white car de,
A wettable powder is obtained by mixing and pulverizing one part of sodium licunin sulfonate, one part of siethylenoalkyl ether in Holio, and 12 parts of Hytale. Use by diluting approximately 1000 times with water.

Example 3 (Powder) A powder is obtained by mixing part of Fuite/acid with 10 parts of monoglyceride and 70 parts of starch and mixing part of ID2j with 73 parts of Merck.

Example ≠ (emulsion) Ethanolamine ≠ O part, Gurilayeride 10 parts, polynolobile/glycol fatty acid ester 1 part, methanol/
Part J' and 50 parts of water are mixed and dissolved to obtain an emulsion.

Example (Emulsion) L-inositio part, polyoxyethylene/rulyl ether j part in alcohol, rusulpho/#II sodium js1 in alcohol 20 parts of methanol and 30 parts of arsenic water are mixed and dissolved to obtain an emulsion.

Next, the effect of the drug θ of the present invention on controlling plant diseases will be specifically determined by test examples. For clarity, the control agent was used at 0 m degree when actually used.

Test example / (Rice blast disease control test) Rice (variety Nijukoku) was grown in a greenhouse in a synthetic resin pot with a diameter of lhOcmθ, and the rice (variety Nijukoku) was grown in a greenhouse, and at the J-leaf stage, it was grown in a predetermined amount of water containing 1 oes of ethanol. A diluted solution of the compound of the present invention was sprayed onto one tank of IILO per lot. Rice blast fungus theta spores separately cultured in a rice husk medium (containing powdered yeast, extract, soluble starch, sucrose, and rice husk) were suspended in water (spore concentration gt: 705 HiroX spores/d).

Spray this uniformly into a tank/per pot≠~j''- and place it in a constant temperature and humidity box at 21! If 27°C and a humidity of j or higher to develop the disease. Determine the number of ρ lesions and calculate the control value according to the following formula.

The Q results are shown in Table 7.

Test Example (Peteunia Q petal gray mold control test) Nine petunias (flowering 2-3 days long) grown in a greenhouse were cut from the flower part and placed in a test tube filled with water. 4
The predetermined concentration ρ of the present invention compound θIatL dissolved in 10% ethanol-containing water was added to po~, 3'O-
Sprayed evenly.

Botrytlsclnerla (Botrytlsclnerla) was cultured on a thousand-faced potato pickled ground and treated with BLB.
, 10dCj (flowers) evenly! Jill greeted me.

After inoculation, the bales were allowed to stand in a greenhouse for 76 hours, and the number of θ lesions on each ρ petal was investigated after disease onset. The method for calculating the control value is according to the following formula.

Similarly, a test was conducted using a doghorn-resistant Botrytis blight fungus. This result, t! It is shown in the g2 table.

(Effects of the Present Invention) As is clear from the above Q test examples, the active ingredient compound of the present invention was found to have an excellent pest control effect and to be a safe agricultural chemical without chemical damage.

Claims (1)

[Claims] A plant disease control agent containing a compound selected from ethanolamine, L-inosit, and phytic acid as an active ingredient.