JPS6033404B2 - Sterilizing composition for agriculture and horticulture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for agricultural and horticultural use, characterized in that the fungicidal active ingredient containing copper simultaneously contains one or more of basic magnesium carbonate and fatty acids or derivatives thereof as phytotoxicity reducing agents. TECHNICAL FIELD The present invention relates to disinfectant compositions.

In recent years, rice mildew (pathogenic bacterium Ustilaginoidea virens; Ustilaginoidea vl.
The occurrence of the disease (Rens Takahashi) is on the rise, and in areas where it occurs frequently, it is becoming a problem as it not only reduces the yield but also causes a large amount of damaged and diseased grains to be mixed into brown rice and white rice, reducing the quality of the rice. Copper agents are known to be effective as agents for controlling such diseases.

Copper agents are also being reconsidered because they have not been shown to be effective against pathogens other than rice mildew that cause discolored rice, discolored rice, etc., and there are few problems in terms of residual regulations. However, when copper agents are used, although they can control rice mildew, they essentially cause chemical damage to the rice, and as a result, they have serious drawbacks in rice cultivation, such as not only lower yields but also lower quality. Was. Until now, it has been known that basic magnesium carbonate is effective in reducing phytotoxicity of steel agents, but this degree of phytotoxicity reducing effect is a practical problem, and copper agents should not be used on rice because they cause phytotoxicity. I've been exposed to it.

Therefore, the current situation is that there is a desire for the development of new chemical damage reduction technology for steel agents. The inventors of the present invention have carried out extensive research to improve the drawbacks of copper agents while taking advantage of their advantages. As a result, basic magnesium carbonate and fatty acids or their derivatives were added to the effective bactericidal ingredients containing copper.
We have succeeded in creating a fungicidal composition for agriculture and horticulture that can significantly reduce the phytotoxic effects against rice mildew without reducing its efficacy at all by using the seeds or two or more of the seeds in combination. In general, copper agents produce soluble copper due to the amount of organic acids secreted by crops and diseased bacteria and exhibit bactericidal effects, but on the other hand, large amounts are said to cause chemical damage.

Although the mechanism of reducing chemical damage in the present invention is not fully clear, it is thought that the combined use of basic magnesium carbonate and one or more fatty acids or their derivatives controls the amount of soluble copper to an appropriate level, resulting in a reduction in chemical damage. It will be done. The active bactericidal ingredients containing copper used in the present invention include inorganic steels such as basic sulfuric acid steel, basic chloride steel, cupric hydroxide, and basic carbonate steel, and organic copper such as 8←oxyquinoline steel. can be mentioned.

Examples of fatty acids and derivatives thereof include saturated or unsaturated, linear or branched fatty acids having 6 or more carbon atoms, metal salts thereof, alcohol esters thereof, etc. alone or in mixtures. For example, fatty acids include myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, and linoleic acid.Also, beef tallow fatty acid, whale oil fatty acid, coconut oil fatty acid, which are commercially available singly or as a mixture of these acids,
Palm oil folic acid, tall oil folic acid, soybean oil folic acid, rapeseed oil foc acid, etc. can also be used. Derivatives include metal salts of these fatty acids such as calcium, magnesium, and aluminum salts, stearic acid monoglyceride, oleic acid monoglyceride, palmitic acid triglyceride,
Glycerin fatty acid esters such as stearic acid triglyceride, solpitan monooleate, sorbitan mono/
Sorbitan fatty acid esters such as glumitate, sorbitan monostearate, and sorbitan tristearate, higher alcohol fatty acid esters such as cetyl palmitate, mericyl palmitate, and seryl cerotate can be used. The agricultural and horticultural fungicidal composition of the present invention does not require any special method or equipment; the powder can be manufactured using various carriers and auxiliaries commonly used in the manufacture of agricultural chemicals. good.

In this case, the basic magnesium carbonate used to reduce chemical damage is 0.1 part by weight of metal steel in the active ingredient.
Fatty acids or their derivatives are added in an amount of 0.05 parts by weight or more per 1 part by weight of metallic copper in the active ingredient, but in practice basic magnesium carbonate is added in an amount of 0.05 part by weight or more per 1 part by weight of metallic copper in the active ingredient. It is desirable to use 0.5 parts by weight or more per 1 part by weight of steel. Furthermore, various mixed preparations can be produced by mixing the agricultural and horticultural fungicidal composition according to the present invention with other fungicides and insecticides. Examples are given below to specifically explain the present invention; however, the present invention is not limited to these examples, and the types and amounts of active ingredients, auxiliary ingredients, and drug-harm reducing agents may be changed as appropriate. It can be implemented by

In addition, in the examples and in the control agent described below, all parts are by weight.

Example 1 11.7 parts of powder basic sulfuric acid steel (contains 51.3% as metal steel; the same applies to the following examples and controls), 12 parts of basic magnesium carbonate, 2 parts of calcium stearate, 2 parts of white carbon and 72.3 parts of clay are uniformly mixed and pulverized to obtain a powder containing 6% of metallic copper.

Example 2 Powder basic sulfate steel 11. Full part, basic magnesium carbonate 12
1 part of tallow fatty acid, 2 parts of white carbon, and 73.3 parts of clay are uniformly mixed and pulverized to obtain a powder containing 6% of metal steel.

Example 3 Powder: 11.7 parts of basic copper sulfate, 12 parts of basic magnesium carbonate
parts, 1 part of stearic acid monoglyceride, 2 parts of white carbon and 73.9 parts of clay. A powder containing 6% of metal steel is obtained by uniformly mixing and pulverizing the $ part.

Example 4 10.3 parts of powder basic chlorinated steel (containing 58.5% as metallic copper; the same applies to the following examples and controls), 12 parts of basic magnesium carbonate, 2 parts of calcium stearate, 2 parts of white carbon And Klee. Seven parts were uniformly mixed and pulverized to obtain a powder containing 6% of metallic copper.

Example 5 Powder basic chloride steel10. $ part, basic magnesium carbonate 12
1 part of tallow fatty acid, 2 parts of white carbon, and 74.7 parts of clay are uniformly mixed and pulverized to obtain a powder containing 6% of metal steel.

Example 6 Powder basic chloride steel 10. $ part, basic magnesium carbonate 12
1 part of stearic acid monoglyceride, 2 parts of white carbon, and 74.7 parts of clay are uniformly mixed and pulverized to obtain a powder containing 6% of metallic copper.

Test Example Test on the effect of reducing chemical damage and the effect of controlling rice mildew A test was conducted on the effect of reducing chemical damage and the effect of controlling rice mildew of the agricultural and horticultural fungicidal composition according to the present invention.

As a test method, four-leaf stage seedlings of rice (variety: Asahi) grown by the field seedling method were hand-shielded (rice planting June 14th, cultivation shield density 15 x 30 arcs, 3 to 4 plants per plant). Honda fertilizer application amount is ammonium sulfate 40k9 and superphosphate lime 20k9 as base fertilizer per 10 ares.
And chloride power 0 ri 10k9 was applied (June 12th), and ammonium sulfate 15k9 per 10are (July 8th) and NK chemical (N16%, K16%) 5k9 (August 1st) were applied as top dressing. In addition, 10 qo of damaged grains from the previous year were stored at low temperature (10 qo) 20 days after rice planting as a source of rice mildew.
I scattered 3 pieces per square. Pesticides were sprayed twice using a midget duster at a rate of 4k9 per 10 ares during the rope-spreading period (August 20th) and the heading period (September 5th). The examination of the test results was as follows: [1] Regarding visual chemical damage, the degree of browning of 23 sticky paddy randomly selected from each district 5 days after the final chemical application was investigated using the following criteria, and the external chemical damage index was calculated using the following formula.

Appearance drug damage index = drug damage degree mx50 drug damage degree ox30 drug damage degree lxIXI.

〇Number of panicles to be investigated x 5 Phytotoxicity level m: 50% or more of the paddy in one rope has browned.Difficulty level B: 10% or more and less than 50% of the paddy in 1 rope has browned.Degree of phytotoxicity 1 ：Less than 10% of the rice grains in the ears are browned.Severity of chemical damage is 0.：1There is no browning of the rice grains in the ears at all. We investigated the severity of rice mildew using the following criteria, determined the severity of the disease, and calculated the control value (%) by comparing it with the non-sprayed area.

Disease severity M: The number of diseased grains per plant is IN hard or higher. Disease severity B: The number of diseased grains per plant is 5 or more and less than 1q hard. Disease severity 1: The number of diseased grains per plant is 5. Disease severity: less than 0: No disease observed in 1 plant Disease severity = disease severity mx 5 0s disease severity ox 3 10s disease severity lx IXI.

〇Number of plants to be investigated x 5 Control value (%) = (1 - flocked chickens in the Kagao Kenku area) (Monthly 11th) After drying, threshing, hulling, and rice selection, the average weight of mulled brown rice was determined and the ratio of the unsprayed plots to the unsprayed plots was determined.

'4) Regarding the percentage of green rice, the weight ratio (%) of green rice contained in 100 tons of brown rice after hulling was determined in the process of yield investigation.

The survey was repeated three times in each district. As a test control agent, various powders having the following composition were manufactured and tested according to the manufacturing method of the examples. Control agent 1 Powder control agent consisting of 11.7 parts of basic sulfuric acid steel, 2 parts of white carbon and 86.3 parts of clay 2 Basic sulfuric acid steel 11. Wanbang, basic magnesium carbonate 12
3 parts of basic copper chloride, 2 parts of white carbon and 87.3 parts of clay. Powder control agent consisting of Funabe 4 Basic chloride steel 10. Moribe, basic magnesium carbonate 12
This test was conducted in 1 section, 10 parts, and 75.7 parts of clay, and the average appearance chemical damage index, average rice mildew control value, average yield ratio, and average green rice rate were determined. Ta.

The results are shown in Table 1. Satoshifunefu S lotus corpse ga oath S Sunnori Gunnada Kamohsunto Ichidaku Book Lotus Exhibition Tomb Kaoruji' Shimada selection eat to ascend to restoration selection song Misakiri go small size Satoshi rice ~ [IEX bandit * wave I don't like the shouting of the shouto guide light gun. 〕〕 Gigo 00 Ikari to Ryoshoku Kamato (〈 Shima K When used in combination, the effect of reducing drug damage is even more pronounced.

Claims (1)

[Claims] 1 Copper-containing bactericidal active ingredient with basic magnesium carbonate and fatty acids or their derivatives as phytotoxicity reducers.
An agricultural and horticultural fungicidal composition characterized by containing one species or two or more species at the same time.