CN103598182B

CN103598182B - Prevention and control agent for banded sclerotial blight of crops

Info

Publication number: CN103598182B
Application number: CN201310656355.1A
Authority: CN
Inventors: 郭红甫; 李政道; 曹筠慧; 赵继文; 陈建芳; 孙艳敏; 许国震; 高洪泽; 孙刚强; 岳振国; 白怀瑾; 秦海英; 胡玉香; 王留梅; 胡占菊; 周娟丽; 亓晓光; 陈禄廷; 刘晓帆; 郭慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-06
Filing date: 2013-12-06
Publication date: 2014-12-10
Anticipated expiration: 2033-12-06
Also published as: CN103598182A

Abstract

The invention relates to a prevention and control agent for banded sclerotial blight of crops. The active ingredients of the prevention and control agent for banded sclerotial blight of crops are validamycin and glucosene, wherein the validamycin is validamycin A or a mixture of the validamycin A and isomers B, C, D, E and F of the validamycin A. The active ingredients comprise the following components in parts by weight: 0.1-60.0 parts of validamycin and 0.1-25.0 parts of glucosene. According to a synergistic effect of the bactericidal activity of the validamycin and the induced resistance of the glucosene, the occurrence and development of the banded sclerotial blight of crops are prevented and controlled, the agent has the prevention and treatment effects, and obvious prevention and treatment effects can be achieved when the agent is taken before or after pathogenesis.

Description

Control agent for crop sheath blight

Technical Field

The invention relates to a control agent for crop sheath blight disease.

Background

The crop sheath blight is a fungal disease caused by rhizoctonia solani infection, is commonly found in gramineous crops such as rice, wheat, millet and the like, pathogenic bacteria live through the winter in soil by virtue of sclerotia, or live through the winter on disease residues or hosts such as field weeds and the like by virtue of mycelia, belongs to high-temperature and high-humidity diseases, has close relationship between the disease degree and the environmental temperature and humidity, and has outbreak property along with rainfall and high-humidity weather.

The banded sclerotial blight of crops can be caused from seedling stage to ear stage, the common outbreak of the banded sclerotial blight in the full tillering stage is serious, the leaf sheath and the leaf blade are mainly damaged, the leaf sheath of the sword leaf is infected in the heading stage, the sword leaf is withered and yellow in advance by light persons, the plant cannot be normally tasked by heavy persons, the ear neck is infected after heading, the seed setting rate is directly reduced, the thousand seed weight is reduced, and the plant lodging or the death of the whole plant is caused in serious cases. The banded sclerotial blight occurs generally and is seriously damaged, for example, the yield of one of three diseases of rice of banded sclerotial blight is reduced by about 10 percent generally, and the yield is reduced by more than 30 to 50 percent in serious cases.

The comprehensive control measures of the crop sheath blight are methods of selecting disease-resistant and disease-tolerant varieties, reasonably applying fertilizer, sowing in proper time, controlling by using medicaments and the like, and mainly promote the disease-resistant varieties and controlling by using the medicaments.

In the aspect of preventing and treating the banded sclerotial blight of crops, currently, the national pesticide registered prevention and treatment agents are single agents or compound agents of validamycin A, validamycin, propiconazole, carbendazim, imibenamide, clorstrobin, hexaconazole, tebuconazole, difenoconazole, triadimefon, thiophanate-methyl, prochloraz manganese salt, fosetyl-aluminum, diniconazole, thiram, polyoxin, xylomycin, mixed copper amino acid, kresoxim-methyl, thiazole zinc, thifluzamide, flutolconazole, trichloroisocyanuric acid, chlorobromoisocyanuric acid, alkene oxime amine, copper complex, shenqinmycin, cuprous oxide, pyrimidine nucleoside antibiotics, amobam, chlorothalonil, paenibacillus polymyxa, bacillus cereus, bacillus subtilis and the like, and the prevention and treatment effects are 60-80 percent.

Validamycin, including validamycin A and validamycin (a mixed preparation of validamycin A and an isomer B, C, D, E, F thereof), is a single preparation which passes national pesticide registration at present and is mainly used for preventing and treating crop sheath blight. The compound preparation comprises: is compounded with waxy aphid bacillus for preventing and treating sheath blight, rice blast, green smut and gibberellic disease; is compounded with carbendazim and used for preventing and treating sheath blight, rice blast and gibberellic disease; is compounded with tricyclazole for preventing and treating sheath blight, rice blast and false smut; is compounded with tebuconazole for preventing and treating rice blast and false smut; is compounded with diniconazole or nucleotide antibiotics for preventing and treating banded sclerotial blight and false smut; is compounded with hexaconazole or hydroxyolefine adenine for preventing and treating banded sclerotial blight; is compounded with bacillus subtilis to prevent and treat false smut.

Reports on validamycin-containing drugs for treating sheath blight are as follows:

CN99114475.9 (publication No. CN 1289537A) discloses a rhizoctonia solani compound for preventing and treating rhizoctonia solani in rice fields and wheat fields, which has the advantages of long-acting effect and low cost in the field of pesticides, and is mainly characterized in that herbicide butachlor and validamycin are used as main agents and auxiliary agents to be compounded into powder or emulsion.

CN03132050.3 (publication No. CN 1471824A) relates to a new drug for preventing and treating rice sheath blight disease, rice blast and false smut, the effective components are hexaconazole and validamycin, and the hexaconazole and validamycin compound pesticide has obvious synergistic action.

CN200710135172.X (publication number CN 101147492A) relates to a copper sulfate and validamycin compound bactericide for preventing and treating crop diseases such as rice sheath blight disease, rice false smut and the like and a use method thereof.

CN200810244497.6 (publication No. CN 101444214A) discloses a biological compound agent for preventing and treating fungus diseases such as rice sheath blight and the like, in particular to difenoconazole and validamycin A wettable powder, wherein each gram of the wettable powder contains 20-80mg of difenoconazole and 40-160mg of validamycin, and the rest is a wetting agent, a dispersing agent and a filling material.

CN201110298274.X (publication number CN 103027058A) relates to a bactericide composition for preventing and treating rice diseases, which comprises the following components, by weight, 5-20% of carbendazim, 2-10% of validamycin A and 2-10% of tricyclazole.

CN201310194213.8 (publication No. CN 103283725A) relates to a pesticide composition and its use, in particular to a fungicide composition using amino-oligosaccharin and validamycin a as main active ingredients and its use. The active ingredients of the medicine are amino-oligosaccharin and validamycin, wherein the mass ratio of the amino-oligosaccharin to the validamycin is 1: 1-1: 50. preferably 1: 2-1: 10.

the pesticide for preventing and treating the sheath blight of the crops is mostly a compound bactericide, the prevention and treatment effect generally has no great breakthrough, and the requirement of agricultural production cannot be met. Therefore, it is necessary to provide a control agent for sheath blight of crops, which has a better control effect.

Disclosure of Invention

The invention aims to provide a control agent for crop sheath blight.

The invention provides a control agent for sheath blight of crops, which comprises the following active components: validamycin and dextranase.

Specifically, the active ingredients of the control medicament comprise the following components in parts by weight: 0.1-60.0 parts of validamycin and 0.1-25.0 parts of glucose.

Preferably, the active ingredients of the control medicament contain the following ingredients in parts by weight: 0.1-60.0 parts of validamycin and 0.1-20.0 parts of dextranase.

In the above preventive and therapeutic agents:

the weight portion of the pesticide composition can be the known weight unit in the pesticide field such as mu g, mg, g, kg, and the like, and can also be the multiple of the known weight unit, such as 10 times, 100 times, one tenth, one hundredth.

The validamycin is validamycin A or a mixture of the validamycin A and an isomer B, C, D, E, F of the validamycin A.

The control agent provided by the invention also comprises soluble fillers which are various soluble fillers commonly used in the field, and according to the common general knowledge of the technicians in the field, inorganic salts or organic matters containing plant nutrients are preferably selected, such as inorganic salts or organic salts containing potassium, phosphorus, magnesium, calcium, manganese, copper, zinc, ammonium and the like, urea containing nitrogen and the like, and specifically calcium chloride, potassium chloride, manganese chloride, magnesium chloride, ammonium chloride, urea, ferrous sulfate, zinc sulfate, copper sulfate, ammonium sulfate, magnesium sulfate, calcium acetate or potassium dihydrogen phosphate.

The control medicament provided by the invention is a preparation known in the field, and soluble powder and water aqua are preferred.

The invention also provides a preparation method of the control medicament, which comprises the following steps: weighing the components according to the proportion, and uniformly mixing to obtain the product.

The invention also provides application of the control agent in preparation of a pesticide for controlling the sheath blight of crops.

The control agent of the invention is generally sprayed by leaf surfaces, the dosage of the active ingredients is generally 3.5-12 g/mu, and the spraying concentration of the active ingredients is generally 100-350 ppm. The amount can be adjusted as desired by those skilled in the art. The control agent for the crop sheath blight disease provided by the invention has the following advantages:

1. the prevention and treatment medicament provided by the invention comprises the following components:

validamycin (Validamycin; jingangmycin), also known as Validamycin, chemical name: n- [ (1S) - (1,4,6/5) -3-hydroxymethyl-4, 5, 6-trihydroxy-2-cyclohexenyl ] -O-beta-D-glucopyranosyl- (1 → 3) ] -1S- (1,2,4/3,5) -2,3, 4-trihydroxy-5-hydroxymethyl-cyclohexylamine, a metabolite produced by S.hygroscopicus validamia var valia, has A, B, C, D, E, F six isomers in total, the isomer validamycin A (validamycin A) has the strongest activity, the pure product is white powder, has no definite melting point, is softened at 95-100 ℃, is decomposed at 130-135 ℃, is easy to dissolve in water, has strong hygroscopicity, is stable under neutral and slightly acidic conditions, and is easy to decompose under strong acid and strong alkali conditions. The validamycin has low toxicity to human and livestock, is safe to birds and fishes, belongs to systemic agricultural antibiotic bactericides, has a treatment effect by interfering and inhibiting the normal growth and development of pathogenic bacteria cells, and can be used for preventing and treating crop sheath blight, false smut, damping off, southern blight, corn northern leaf blight and the like.

The glucans belong to polysaccharide bioactive substances, are novel plant resistance inducers, are slightly toxic and are easily soluble in water. The glucanase as an exogenous regulatory factor can induce plants to generate plant protection matters capable of killing pathogenic microorganisms, and reduce the generation of various crop diseases; can also be used as a growth regulating factor to effectively promote various metabolic activities of plant growth, branching, flowering, fruiting and the like and improve the crop yield.

Researches show that the two effective components, namely validamycin and glucal, have a synergistic effect after being mixed, and the effect of preventing and treating the sheath blight of crops can be obviously improved.

2. The effective components of the crop sheath blight prevention and control medicament are prepared by mixing systemic agricultural antibiotic validamycin and dextranase, and the synergistic effect induced by antibiotic bactericidal activity and active polysaccharide resistance is utilized to enhance the prevention and control effect and prevent and control the occurrence and development of crop sheath blight. The invention has the functions of preventing and treating the crop sheath blight, can achieve obvious preventing and treating effects before or after the crop sheath blight, and has long application period.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the following examples, the particle size range of all the raw materials is not limited, but in order to satisfy the requirements of fluidity and uniformity of the prepared formulation, the raw material components having a particle size of 0.01 to 0.99mm are preferable. But should not be construed as limiting the invention.

In the following examples, validamycin a is validamycin a monomer, and validamycin is a mixture of validamycin a and its isomer B, C, D, E, F.

Example 1: banded sclerotial blight prevention and treatment medicament '0.1% validamycin A +0.1% glucose syrup agent'

1. The components (100%): 0.1% validamycin a; 0.1% dextran sugar.

2. The preparation method comprises the following steps: 60% validamycin A0.17g and 95% dextranase 0.11g are respectively weighed and put into a volumetric flask with 100ml, and water is added for dissolving and constant volume is added to 100ml, thus obtaining the aqua.

Example 2: banded sclerotial blight prevention and treatment medicament '2% validamycin +0.5% glucose syrup agent'

1. The components (100%): 2.0% validamycin; 0.5% dextran sugar.

2. The preparation method comprises the following steps: respectively weighing 2.2g of 90% validamycin and 0.5g of 95% dextranase, putting into a 100ml volumetric flask, adding water to dissolve, and fixing the volume to 100ml to obtain the aqua.

Example 3: rhizoctonia solani control medicament '10% validamycin A +2% glucose soluble powder'

1. The components (weight percentage 100%): 10.0% validamycin a; 2.0% dextran; calcium chloride as filler.

2. The preparation method comprises the following steps: respectively weighing 60% validamycin A16.7g, 95% glucose 2.1g and filler calcium chloride 81.2g, and mixing the above components uniformly.

Example 4: banded sclerotial blight prevention and treatment medicament '20% validamycin +20% glucose soluble powder'

1. The components (weight percentage 100%): 20.0% validamycin; 20.0% dextran; and filling material ammonium chloride.

2. The preparation method comprises the following steps: 22.2g of 90% validamycin, 21.1g of 95% dextranomenclat and 56.7g of filler ammonium chloride are weighed respectively and evenly mixed to obtain the compound.

Example 5: rhizoctonia solani control medicament '40% validamycin +10% glucose soluble powder'

1. The components (weight percentage 100%): 40.0% validamycin; 10.0% dextran; the filler is manganese chloride.

2. The preparation method comprises the following steps: respectively weighing 44.4g of 90% validamycin, 10.5g of 95% glucose and 45.1g of filler manganese chloride, and uniformly mixing the components.

Example 6: rhizoctonia solani control medicament '60% validamycin +5% glucose soluble powder'

1. The components (weight percentage 100%): 60.0% validamycin; 5.0% dextran; and (4) filling potassium chloride.

2. The preparation method comprises the following steps: respectively weighing 66.7g of 90% validamycin, 5.3g of 95% glucose and 28.0g of filler potassium chloride, and uniformly mixing the components.

Example 7: rhizoctonia solani control medicament '30% validamycin A +2% glucose soluble powder'

1. The components (weight percentage 100%): 30.0% validamycin a; 2.0% dextran; calcium chloride as filler.

2. The preparation method comprises the following steps: respectively weighing 60% validamycin A50.0g, 95% dextranomenclat 2.1g and filler calcium chloride 47.9g, and mixing the above components uniformly.

Example 8: rhizoctonia solani control medicament '10% validamycin A +5% glucose soluble powder'

1. The components (weight percentage 100%): 10.0% validamycin a; 5.0% dextran; and (4) filling urea.

2. The preparation method comprises the following steps: 60% of validamycin A16.7g, 95% of dextranase 5.3g and filler urea 78.0g are weighed respectively and mixed evenly.

Experimental example 1

1. Test treatments and methods:

the test treatment and the spraying concentration are shown in table 1, and the validamycin spraying concentration in each treatment is set to be about 200 ppm. Wherein,

treatment 1-8: the sheath blight disease control agents provided in examples 1 to 8 of the present invention, respectively;

control ck₁: 10% validamycin a soluble powder (commercially available);

control ck₂: 10% validamycin soluble powder (commercially available);

control ck₃: 0.5% aqueous solution of dextrane (commercially available);

control ck₀: and (5) clear water control.

Table 1: test treatment set-up

The test field is set in Puyang county pear garden, the conditions of fertilizer and water are good, the irrigation and drainage are convenient, and the soil fertility is uniform. The test crop No. 6 Yujing of the rice is used for preventing and treating the banded sclerotial blight of the target rice, the rice is planted at equal row spacing, the row spacing is 0.3m, the hole spacing is 0.1m, and the density is 2.2 ten thousand clusters/mu. Cell area 27m²15 rows of fields, 6m long. The experiment was repeated 3 times for a total of 36 cells in a random block arrangement. Other field management in the test process is normal.

The first application of the medicine is started at the early stage of the banded sclerotial blight, the worker and the farmer 16 type manual sprayer with the spray hole diameter of 0.7mm is used for uniformly spraying according to the test treatment set in the table 1, the liquid medicine is sprayed in a district by 1.8kg, the liquid medicine is sprayed in 45 kg in each mu of time, and the spraying is carried out once every 7 days for 2 times.

Each cell is diagonally selected at 5 points, each marked with 5 clusters. The disease condition base is investigated before the application of the medicine, and the disease condition of the marker cluster is investigated 7 days after the second application of the medicine. The disease grading and efficacy calculation method is carried out according to the experimental criteria for efficacy in pesticide field GB/T17980.19-2000.

The control effect was calculated according to the following formulas (1) and (2).

2. And (3) test results: see table 2.

Table 2: test results of sheath blight control agents

Table 2 the results show: the treatment is carried out by spraying the liquid medicine containing about 200ppm of validamycin serving as an active ingredient on the leaf surfaces, the effect of preventing and treating sheath blight in the treatment 1-8 is 91.4-92.0%, the difference among the treatments is not obvious, and the difference is greatly superior to that of each control; control ck₁10% validamycin A soluble powder and ck₂10% validamycin soluble powder, ck₃The control effects of the 0.5% dextranase aqua are 76.7%, 67.3% and 54.7% respectively, the three controls have obvious differences, the control effect of validamycin A is superior to that of validamycin, and the control effects of validamycin A and validamycin are superior to that of dextranase.

The test result shows that the glucan can obviously improve the effect of the validamycin on preventing and treating sheath blight in the range of 0.1-60.0 parts by weight of the validamycin and 0.1-20.0 parts by weight of the glucan; the single-dose control effect of the validamycin A is obviously superior to that of the validamycin A, and the control effects of the validamycin A and the validamycin A after being mixed with the glucose have no obvious difference.

Example 2

1. Test materials and methods

Test agents: 10% validamycin a +2% soluble powder of dextrane sugar (example 3);

control agents: 10% of validamycin A and 5% of amino-oligosaccharin soluble powder;

② 10 percent validamycin A soluble powder which is a commercial product;

③ 0.5 percent of dextran sugar water agent, and is a commercial product.

The experimental treatment is set as follows: "10% validamycin A +2% soluble powder of dextrane sugar" 400 times liquid (300 ppm), 600 times liquid (200 ppm), 800 times liquid (150 ppm), control drug 10% validamycin A +5% soluble powder of amino-oligosaccharin 400 times liquid (375 ppm), 10% soluble powder of validamycin A400 times liquid (250 ppm), 0.5% soluble powder of dextrane sugar water (5.6 ppm) and clear water control 7 treatments.

The test was set in Puyang county, Quzhou village and the test site was designed as in example 1.

The prevention and treatment effect investigation method is carried out according to the experimental criteria for pesticide field efficacy (GB/T17980.19-2000).

The control effect calculation method is calculated according to the above formulas (1) and (2).

2. And (3) test results: see table 3.

Table 3: test results of preventing and treating sheath blight by test medicament

Table 3 the results show: the average control effects of the test drug "10% validamycin +2% soluble powder of dextrane" 400-fold liquid, 600-fold liquid and 800-fold liquid were 93.5%, 90.2% and 89.8%, respectively, and the average control effects of the control drug 10% validamycin a +5% soluble powder of amino-oligosaccharin 400-fold liquid, 10% soluble powder of validamycin a 400-fold liquid and 0.5% soluble powder of dextrane water aqua 900-fold liquid were 80.1%, 72.8% and 55.6%, respectively. Through difference significance analysis, the control effect of the test medicament three treatment is extremely superior to that of a control medicament; the control effects of the contrast medicaments are very different, the 10% validamycin A and 5% amino-oligosaccharin soluble powder is very superior to the 10% validamycin A soluble powder in control effect, and the 10% validamycin A soluble powder is very superior to the 0.5% glucan water aqua in control effect.

The test result shows that: the low-limit concentration control effect of the validamycin and glucose compound preparation is remarkably superior to the high-limit concentration control effect of a reference medicament, namely a validamycin and amino-oligosaccharin compound preparation and a validamycin A single agent.

Experimental example 3

1. Test materials and methods

The effective components are as follows: 10% validamycin +2% dextranase

And (3) test treatment: respectively taking calcium chloride, potassium chloride, magnesium chloride, ammonium sulfate and urea as fillers to prepare soluble powder of the sheath blight control agent containing the effective components, and respectively treating for 1-5 times; the water aqua of the sheath blight control agent of the effective components is treatment 6; clear water as reference ck₀。

The preparation method comprises the following steps: soluble powder: selecting raw material components with the particle size of 0.01-0.99mm, respectively weighing 11.1g of 90% validamycin and 2.1g of 95% dextranase, sequentially weighing 86.8g of fillers of calcium chloride, potassium chloride, magnesium chloride, ammonium sulfate and urea, and respectively and uniformly mixing with the components. (II) water agent: weighing 11.1g of 90% validamycin and 2.1g of 95% dextranase, putting into a 100ml volumetric flask, adding water to dissolve, and fixing the volume to 100ml to obtain the aqua.

The test method was the same as in example 1.

2. And (3) test results: see table 4.

Table 4: summary table for preventing and treating effect of different fillers

Serial number	Filler treatment	Spraying concentration (double liquid/ppm)	Average control effect (%)	LSR
					1	Calcium chloride	600/200	91.1%	Aa
2	Potassium chloride	600/200	90.2%	Aa
					3	Magnesium chloride	600/200	92.2%	Aa
4	Ammonium sulfate	600/200	91.7%	Aa
					5	Urea	600/200	93.7%	Aa
6	Aqueous preparation	600/200	92.4%	Aa

Table 4 the results show: soluble inorganic salts or organic matters containing plant nutrients such as calcium chloride, potassium chloride, magnesium chloride, ammonium sulfate, urea and the like are respectively used as fillers to prepare '10% validamycin +2% dextranomenclat' soluble powder or aqueous solution, 600 times of solution (200 ppm) is sprayed on the leaf surfaces, and the effect of preventing and treating sheath blight is 90.2% -93.7%. Through difference significance analysis, the difference between soluble powder and water aqua of different fillers is not significant.

The test result shows that: the prevention and treatment effect is not obviously influenced by different fillers and different formulations in the prevention and treatment medicament provided by the invention.

Experimental example 4

The results of experiments on crops such as wheat, rice and millet with the sheath blight control agent "10% validamycin +2% soluble powder of dextrane sugar" prepared in example 3 are shown in table 5.

Table 5: example 3 summary of exemplary results of the experiments for controlling sheath blight

Crops	Control effect (%)	Yield increasing effect (%)
			Wheat (Triticum aestivum L.)	92.2-94.7	11.3-26.2
Rice (Oryza sativa L.) with improved resistance to stress	88.1-94.9	13.7-36.8
			Millet	90.6-93.5	10.6-31.6

Table 5 the results show: the invention has 88.1-94.9% prevention and cure effect on the sheath blight of wheat, rice, millet and other crops, and 10.6-36.8% yield increase effect.

Exemplary results show that: the invention has obvious effect of preventing and controlling the crop sheath blight and obvious yield increasing effect, and is an ideal medicament for preventing and controlling the crop sheath blight.

Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, it is intended that all such modifications and variations be included within the scope of the invention as claimed and not departing from the spirit thereof.

Claims

1. The control agent for the crop sheath blight is characterized in that the active ingredients of the control agent consist of the following components in parts by weight: 0.1-60.0 parts of validamycin and 0.1-25.0 parts of glucose, wherein the validamycin is validamycin A or a mixture of the validamycin A and an isomer B, C, D, E, F thereof.

2. The preventive and therapeutic agent according to claim 1, characterized in that the active ingredients of the preventive and therapeutic agent consist of the following ingredients in parts by weight: 0.1-60.0 parts of validamycin and 0.1-20.0 parts of dextranase.

3. The preventive agent according to claim 1 or 2, characterized in that a soluble filler is further included in the preventive agent.

4. The preventive agent according to claim 3, wherein the soluble filler is an inorganic salt or an organic substance containing a plant nutrient.

5. The preventive agent according to claim 4, wherein the soluble filler is an inorganic salt or an organic salt containing potassium, phosphorus, magnesium, calcium, manganese, copper, zinc, or ammonium, or urea containing nitrogen.

6. The preventive agent according to claim 5, wherein the soluble filler is calcium chloride, potassium chloride, manganese chloride, magnesium chloride, ammonium chloride, urea, zinc sulfate, copper sulfate, ammonium sulfate, magnesium sulfate, calcium acetate, or potassium dihydrogen phosphate.

7. The prophylactic and therapeutic agent according to claim 1 or 2, wherein the prophylactic and therapeutic agent is a soluble powder agent or an aqueous agent.

8. The prophylactic and therapeutic agent according to claim 3, wherein the prophylactic and therapeutic agent is a soluble powder agent or a water agent.

9. The prophylactic and therapeutic agent according to any one of claims 4 to 6, wherein the agent is a soluble powder agent or an aqueous agent.

10. Use of the control agent according to any one of claims 1 to 9 for the preparation of a pesticide for sheath blight of crops.