117 results about "Brown blotch disease" patented technology

The invention relates to a trichoderma atroviride preparation for preventing and controlling vegetable fungal diseases and a preparation method thereofof the trichoderma atroviride preparation. A trichoderma strain Tr1208 is trichoderma atroviride and preserved in the CGMCC (China General Microbiological Culture Collection Center), and the preservation number is CGMCC No. 6828. According to The the trichoderma atroviride preparation takes, the trichoderma atroviride Tr1208 is used as an effective active ingredient and is prepared by being matched with an agriculturally acceptable carrier and a protective agent for the preparation; the bacteria content of the effective active ingredient is (1.0-30.0)*108 spores / gram; and the bacteria protectant content is 0.05%-1.8%. The preparation can have the effects of effectively preventing and controlling leek Botrytis, cucumber brown patches, cucumber powdery mildew, cucumber downy mildew, tomato early blight, cucumber type damping off, cucumber type blight and cucumber type root rot and promoting plant growth and characteristics of efficiency, wide antimicrobial spectrum, simple usage, low cost, no environmental pollution and plant micro ecological environment improvement.

The invention discloses a streptomyces microflavus. The streptomyces microflavus is the streptomyces microflavus NMG2-4-8, and the preservation number thereof is CGMCG No.3442. The streptomyces microflavus is separated and screened from alfalfa healthy tree rhizosphere soil for the first time in the invention, and experiments prove that the streptomyces microflavus has remarkable antagonistic action for 18 pathogenic fungi and 9 bacteria and broad antibacterial spectrum. The streptomyces microflavus has strong inhabiting action for crop pathogenic bacteria, such as alfalfa downy mildew and the like, shows a good disease prevention effect for the alfalfa downy mildew, powdery mildew, brown spots, stemphylium leaf spot disease, root rot disease and the like, and indicates that the bacterial strain has broad application prospect in the biological prevention and cure fields of alfalfa diseases.

The invention discloses a bactericidal composition containing fluorazolamide and an application thereof in control of multiple fungal diseases of crops. The composition is prepared from one or more of a first active ingredient fluorazolamide, a second active ingredient strobilurin fungicide, namely one of more of pyraclostrobin, azoxystrobin, kresoxim-methyl, trifloxystrobin and picoxystrobin and an assistant, wherein the weight ratio of the first active ingredient to the second active ingredient is (1:40):(40:1), and the sum of the content is 1-90% of total weight of the composition. The composition can be prepared into a suspending agent, a dispersible oil suspension, wettable powder, water dispersible granules, missible oil and a microemulsion allowable in agriculture. The composition is reasonable in components, good in sterilization effect, the activity and the sterilization effect are not simply superposed of the activity of various components, and compared with an existing single preparation, the bactericidal composition has a significant sterilization effect, also has a significant synergistic effect and has good security on crops. The bactericidal composition has significant control effects on gray mold, brown patch, powdery mildew and a leaf spot disease.

The invention provides bacillus amyloliquefaciens cd5bc. The strain is classified and named as Bacillus amyloliquefaciens cd5bc and is preserved in China Center for Type Culture Collection, the preservation number is CCTCC NO:M 2016232, and the preservation time is April 28, 2016. The invention further provides application of the strain in the aspect of preventing and controlling crop diseases and a biocontrol preparation prepared from the strain. The strain has a very significant preventing and controlling effect on red pepper phytophthora blight, the biocontrol effect reaches up to 100% after inoculation is conducted for 15 days, and the biocontrol effect reaches up to 82.36% after inoculation is conducted for 60 days. The bacillus amyloliquefaciens cd5bc has excellent disease-resistant effects on multiple crop diseases, the bacteriostasis rates of the strain on pathogenic bacteria of red pepper sclerotinia blight, bitter gourd wilt, cucumber wilt, cucumber scabs, rice blast, a rice sheath blight disease, broad bean chocolate spots and broad bean brown spots all reach up to 70% or above, and the bacteriostasis rate of the strain on the broad bean chocolate spots and broad bean brown spots reaches up to 100%.

The invention discloses a pesticide composition containing picoxystrobin and amides. The pesticide composition comprises an active component A and an active component B, wherein the active component A is selected from picoxystrobin; the active component B is selected from any one of the following bactericides: dimethomorph, metalaxyl, Metalaxyl-M, BENALAXYL, Benalaxyl-M, Flutolanil and Pyrimorph; and the weight percentage of A to B is 1%-80%:1%-80%. The composition can prevent and treat a plurality of crop diseases, has a notable synergetic action, enlarges the insecticidal spectrum, and is of high activity on downy mildew, epidemic disease, late blight, Leptosphaeria maculans, Pernophythora litchi, phytophthora, white rust, foot rot, Phytophthora parasitica, Pythium debaryanum, soft rot, damping off, banded sclerotial blight, snow mold, Leaf blight, Septoria nodorum, brown blotch or powdery mildew. The consumption of the pesticide is reduced, the residual quantity of the pesticide on crops is decreased and environmental pollution is abated.

The invention discloses a sterilization composition containing prothioconazole and azoxystrobin and an application thereof. The sterilization composition takes prothioconazole and azoxystrobin as main effective ingredients. The sterilization composition can be applied to prevention and treatment of diseases of grains, fruit trees and vegetables, has a relatively high synergetic effect, can be used for overcoming and retarding drug resistance of bacteria with high sterilization speed and long duration, and reducing application cost, and has a prevention and treatment effect remarkably superior to that of a single preparation. The sterilization composition can be used for preventing and treating fungous diseases of crops, especially powdery mildew, banded sclerotial blight, fusarium wilt, leaf spot, rust disease, sclerotinia sclerotiorum, net blotch, scald, botrytis, black spot, brown blotch, black shank, glume blight, net blotch, downy mildew and rice blast, and has an effect better than that of a single preparation.

The invention relates to the technical field of pesticides, and particularly relates to a bactericide composition which takes zhongshengrnycin and copper oxychloride as effective ingredients, has an obvious and enlarged bacteriocidal spectrum and no phytotoxicity, and is used for treating plant bacterial diseases as well as fungal diseases. The weight proportion of the zhongshengrnycin to the copper oxychloride is 1:5-60. The bactericide composition has obvious synergistic effect, high field prevention effect and a wide bacteriocidal spectrum, is used for preventing and treating cucumber bacterial angular leaf spot, cucumber downy mildew, tomato bacterial macula disease, tomato leaf mold, pumpkin soft rot, watermelon bacterial angular leaf spot, watermelon sponge, apple alternaria leaf spot, apple brown blotch, pear scabs, grape downy mildew, grape powdery mildew, anthracnose of grape, jujube rust diseases, jujube anthracnose, citrus canker, citrus scab, citrus anthracnose, peanut leaf spot diseases and peronophythora litchii, and has the advantages of good effect and reduction of prevention and treatment cost.

The invention belongs to the field of biotechnology, and provides an isolation method for highly parasitic pathogenic fungi, for study in the future. Single spore isolation is an effective method for isolating the highly parasitic pathogenic fungi, and is particularly suitable for isolating the pathogenic fungi that suffer severe pollution caused by isolation with a conventional method and are difficult to isolate successfully, namely, venturia nashicola, marssonina mali and cercospora chionea. A conventional single spore isolation technology is complex in operation and high in technical requirements, thereby restricting applications thereof. In the isolation method provided by the invention, by punching holes with capillary tubes having the diameter of 1 mm, an operation process is greatly simplified; operability of single spore isolation is stronger; and speed is faster. A general technical staff can master the technology through simple training, thereby broadening an application scope of the method. A good effect can be achieved by mainly adopting the method to isolate the highly parasitic pathogenic fungi and ascospore.

The invention discloses a bactericidal composition containing prothioconazole and tebuconazole and application thereof. The bactericidal composition uses prothioconazole and tebuconazole as the main effective components. The insecticidal composition can be applied to control of diseases of cereal, fruit trees and vegetables, has high synergetic effects and overcomes and delays pathogen resistance; and the bactericidal composition has the advantages of high insecticidal speed, long effective period, reduced application cost and control effect obvious better than that of single dose usage. The insecticidal composition can be used for control of fungal diseases on crops, in particular for control of powdery mildew, sheath blight, wilt, leaf spot, rust, stalk break, net blotch, scald, botrytis, black spot, brown blotch, black shank and smut, and has better effect than single dose usage.

Disclosed in the present invention is a fungicidal composition containing prothioconazole and a prochloraz manganese salt and use thereof. The fungicidal composition uses prothioconazole and a prochloraz manganese salt as the main active ingredients. The fungicidal composition may be applied to control cereal, fruit, and vegetable diseases, and has high synergistic effects, overcomes and delays the resistance of pathogenic fungi, and has a fast fungicidal speed and long duration. The application cost is reduced, and the control effect is significantly better than that of a single agent. The present invention may be used to control fungal diseases on crops, and in particular, can be used to control powdery mildew, sheath blight, fusarium wilt, leaf spot, rust disease, stalk break, net blotch, scald disease, gray mold, black spot, brown blotch, black shank, cucumber, citrus and pimento anthracnose, citrus stem-end rot, green mold, penicilliosis and mushroom brown rot, and the effects are better than that of a single agent.

The invention relates to a pesticide composition containing prothioconazole and triazoles, which comprises active ingredient A and active ingredient B, wherein active ingredient A is selected from prothioconazole, and active ingredient B is selected from cyproconazole , flusilazole, triconazole, wherein the weight ratio of active ingredient A to active ingredient B is 80:1 to 1:80, made into wettable powder, water dispersible granule, suspending agent, suspoemulsion, Water emulsion, microemulsion, used to control powdery mildew, sheath blight, fusarium wilt, leaf spot, rust, sclerotinia, net spot, sclerotinia, gray mold, black spot, brown spot, rust , scab, white rot, leaf rust, stripe rust, glume blight, leaf mold and other diseases, it has the characteristics of small dosage, resistance to rain erosion, and obvious synergy.

The invention discloses a sterilization composition containing dichloro famoxadone and a methoxy acrylate sterilizing agent. The methoxy acrylate sterilizing agent is one of benzothiostrobin, benzene kresoxim-methyl, fluoxastrobin, azoxystrobin, pyraclostrobin, trifloxystrobin or picoxystrobin, and a weight ratio of dichloro famoxadone to the methoxy acrylate sterilizing agent is 20:1-1:20. The sterilization composition can be used for preventing and controlling various diseases like late blight, powdery mildew, downy mildew, banded sclerotial blight, gray mold, brown spot and anthrax on crops. Compared with existing preparations containing dichloro famoxadone or the methoxy acrylate sterilizing agent, the sterilization composition is remarkable in synergistic effect, excellent in sterilization effect, wide in sterilization spectrum, long in acting duration and safe to the crops, pesticide consumption is reduced, pesticide residue on the crops is lowered, environment pollution is reduced, generation of pesticide resistance of pathogenic bacteria is delayed, and service life of pesticide is prolonged.

The invention belongs to the field of chemical engineering and pesticides, and particularly relates to a heterocyclic compound containing bis(2-substituted sulfonyl-1,3,4-oxadiazole-5-radical) and application thereof. The structure of the heterocyclic compound is shown in the specification. In a general formula, R is hydrogen, C1-C5 alkyl radicals, C1-C5 halogenated alkyl radicals, C2-C5 alkenyl, and ester, benzyl or substituted benzyl of C2-C5, and Z is hydrocarbyl or substituted hydrocarbon thereof, phenyl, substituted phenyl, biphenylyl, substituted biphenylyl, naphthyl, substituted naphthyl, diphenyl hydrocarbyl, substituted diphenyl hydrocarbyl, and diphenyl ether or substituted diphenyl ether. The heterocyclic compound has very good inhibitory activity on rhizoctonia solani, fusarium asiaticum, borrytis cinerea, physalospora piricala, helminthossporium oryzae, tobacco bacterial wilt and rice brown blotches, can be applied to prevention and control of plant diseases and has wide application prospect.

The invention discloses a bactericidal composition containing thifluzamide and fludioxonil and an application thereof. The bactericidal composition takes thifluzamide and fludioxonil as main active ingredients, wherein the weight ratio of thifluzamide to fludioxonil is (1-70):(1-50). The bactericidal composition can be used for preventing the diseases of cereal, melon and fruit or vegetable crops, has relatively high synergistic effect, overcomes and delays the drug resistance of germs, and realizes high bactericidal speed and long duration while the application cost is reduced and the prevention effect is obviously better than that of using a single agent. The bactericidal composition disclosed by the invention can be used for preventing fungal diseases of crops and particularly can be used for preventing the fungal diseases such as leaf blight, rust disease, powdery mildew, downy mildew, epidemic disease, anthracnose, scab, brown spot, damping off, gray mold and the like, and the effect is better than that of using a single agent.

The invention discloses trichoderma harzianum and applications thereof in preventing and controlling a turfgrass brown patch disease. The collection number of the trichoderma harzianum JTM53 is CGMCC (China General Microbiological Culture Collection Center) No.8914. The invention further protects a fermentation broth of a JTM53 strain. The JTM53 strain has the attributes of being strong in survivability, wide in adaptability, free from environmental pollution and the like, thus having wide application prospects as a biocontrol bacterium. The indoor co-antagonism experiments show that the JTM53 strain has an excellent antibacterial effect on rhizoctonia solani. Furthermore, the JTM53 strain is used for preparing a solid fermentation matter, and then the solid fermentation matter is further used for potted plant prevention and control experiments and land controlling experiments, and the prevention and control effects on rhizoctonia solani are excellent and stable. The trichoderma harzianum has important application values on the prevention and control of the turfgrass brown patch disease.

The invention discloses a sterilization composition containing prothioconazole and difenoconazole and an application thereof. The sterilization composition takes prothioconazole and difenoconazole as main effective ingredients. The sterilization composition can be applied to prevention and treatment of diseases of grains, fruit trees and vegetables, has a relatively high synergetic effect, can be used for overcoming and retarding drug resistance of bacteria with high sterilization speed and long duration, and reducing application cost, and has a prevention and treatment effect remarkably superior to that of a single preparation. The sterilization composition can be used for preventing and treating fungous diseases of crops, especially powdery mildew, banded sclerotial blight, fusarium wilt, leaf spot, rust disease, sclerotinia sclerotiorum, net blotch, scald, botrytis, black spot, brown blotch, black shank, scab, sphaceloma ampelinum, white rot, alternaria leaf spot, brown patch and gibberellic disease, and has an effect better than that of a single preparation.

The invention discloses a sterilization composition containing prothioconazole and trifloxystrobin and an application thereof. The sterilization composition takes prothioconazole and trifloxystrobin as main effective ingredients. The sterilization composition can be applied to prevention and treatment of diseases of grains, fruit trees and vegetables, has a relatively high synergetic effect, can be used for overcoming and retarding drug resistance of bacteria with high sterilization speed and long duration, and reducing application cost, and has a prevention and treatment effect remarkably superior to that of a single preparation. The sterilization composition can be used for preventing and treating fungous diseases of crops, especially powdery mildew, banded sclerotial blight, fusarium wilt, leaf spot, rust disease, sclerotinia sclerotiorum, net blotch, scald, botrytis, black spot, brown blotch, black shank, glume blight, net blotch, downy mildew, rice blast and apple scab, and has an effect better than that of a single preparation.

The invention belongs to the field of agricultural bactericides and herbicides, and particularly discloses triazole Mannich base compounds containing trifluoromethyl and piperazine, as well as preparation methods and application of the triazole Mannich base compounds. The triazole Mannich base compounds have structural formulas shown in formula I and formula II; in the structural formulas, R1 and R2 are defined as claim 1. The triazole Mannich base compounds have certain in-vitro inhibitory activities on such plant pathogens as cucumber fusarium wilt pathogens, peanut cercospora brown spot pathogens, apple ring spot pathogens, tomato early blight pathogens, wheat sharp eyespot pathogens and wheat scab pathogens, and particularly has relatively high in-vitro inhibitory activities on the apple ring spot pathogens and the wheat sharp eyespot pathogens. The triazole Mannich base compounds with the structural formulas shown in formula I and formula II both have certain weeding activities on oilseed rapes, and have relatively high in-vitro inhibitory activities on ketol-acid reductoisome-rase (KARI) of rice. The triazole Mannich base compounds are applicable to comprehensive control of the damage caused by bacteria and weeds, and inhibition on the KARI activity.

The invention discloses a bactericidal composition containing silthiopham and a triazole compound. The bactericidal composition comprises an active component A and an active component B, wherein the active component A is selected from silthiopham; the an active component B is selected from any one of bactericides such as difenoconazole, tebuconazole, hexaconazole and epoxiconazole; and a weight ratio of the active component A to the active component B is 1 : 60-60 : 1. The bactericidal composition can prevent and treat a plurality of crop diseases, has an obvious synergistic effect and broadens a bacteriocidal spectrum. The bactericidal composition has relatively high activity for wheat loose smut, full rot, corn head smut, alternaria leaf spot, ring spot, powdery mildew, rust disease, scab, brown spot, anthrax, rice sheath blight, false smut, rice blast, anthrachose, white rot, gibberellic disease, glume blight, leaf blight, downy mildew, epidemic disease and leaf spot disease, and can reduce pesticide dose and reduce residual amount of the pesticide on the crop, thereby reducing environment pollution.

The invention relates to a trichoderma atroviride preparation for preventing and controlling vegetable fungal diseases and a preparation method thereofof the trichoderma atroviride preparation. A trichoderma strain Tr1208 is trichoderma atroviride and preserved in the CGMCC (China General Microbiological Culture Collection Center), and the preservation number is CGMCC No. 6828. According to The the trichoderma atroviride preparation takes, the trichoderma atroviride Tr1208 is used as an effective active ingredient and is prepared by being matched with an agriculturally acceptable carrier and a protective agent for the preparation; the bacteria content of the effective active ingredient is (1.0-30.0)*108 spores / gram; and the bacteria protectant content is 0.05%-1.8%. The preparation can have the effects of effectively preventing and controlling leek Botrytis, cucumber brown patches, cucumber powdery mildew, cucumber downy mildew, tomato early blight, cucumber type damping off, cucumber type blight and cucumber type root rot and promoting plant growth and characteristics of efficiency, wide antimicrobial spectrum, simple usage, low cost, no environmental pollution and plant micro ecological environment improvement.

The invention discloses an application of a Trichoderma asperellum microbial agent in prevention and treatment of crop diseases, the classification name of the strain is Trichoderma asperellum, the strain is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO: M 20211179, and the preservation date is September 15, 2021. The trichoderma asperellum can inhibit the growth of a plurality of pathogenic fungi, and can effectively prevent and treat crop diseases caused by fusarium oxysporum, gaeumannomyces graminis, cucumber brown spot, watermelon fusarium oxysporum, pumpkin leaf spot, phytophthora capsici, cucumber fusarium oxysporum and the like. The microbial agent has no toxic and harmful effects on the environment and plants, has a certain growth promoting effect on crop growth, and can be applied to preparation of antagonistic bacteria for preventing crop pathogenic bacteria.

The invention discloses pseudomonas sp. CGMCC No. 20361. The pseudomonas sp. CGMCC No. 20361 is finally identified as pseudomonas sp through morphological characteristic observation, physiological andbiochemical reaction and 16S rDNA sequence comparison of a strain; and the strain and the fermentation filtrate thereof have antagonistic activity on alternaria mali and alternaria mali. The strain is simple in culture condition, simple in fermentation filtrate preparation process and convenient to apply, and has the potential of developing a novel and efficient biocontrol microbial agent for apple related diseases.

The invention discloses a sterilization composition containing cyprodinil and prochloraz, the effective constituents are the cyprodinil and the prochloraz, and the weight ratio of the cyprodinil and the prochloraz in the composition is (50:1)-(1:50); the total weight of the cyprodinil and the prochloraz accounts for 0.1%-0.8% of the weight of the composition, and the balance is auxiliaries; afterthe cyprodinil and the prochloraz are compounded at certain proportion, the synergism can be provided for indoor activity of the Sclerotium rolfsii Sacc., and the sterilization composition is suitablefor preventing and curing the peanut southern blight caused by the Selerotium rolfsii Sacc. and can also be suitable for preventing and curing other crop diseases such as peanut cercospora brown spotdisease, potato tarspot and rice sheath blight disease.

The invention discloses a bactericidal composition containing prothioconazole and prochloraz and application thereof. The bactericidal composition uses prothioconazole and prochloraz as the main effective components. The insecticidal composition can be applied to control of diseases of cereal, fruit trees and vegetables, has high synergetic effects and overcomes and delays pathogen resistance; and the bactericidal composition has the advantages of high insecticidal speed, long effective period, reduced application cost and control effect obvious better than that of single dose usage. The insecticidal composition can be used for control of fungal diseases on crops, in particular for control of powdery mildew, sheath blight, wilt, leaf spot, rust, stalk break, net blotch, scald, botrytis, black spot, brown blotch and leaf spot disease, and has better effect than single dose usage.

The invention relates to a bactericidal composition containing picoxystrobin and benzimidazoles, which comprises an active ingredient A and an active ingredient B. Wherein the active ingredient A is selected from picoxystrobin, the active ingredient B is one selected from carbendazim and thiophanate methyl, the ratio of the effective active ingredient A to the effective active ingredient B by weight is 1-50%: 1-80%. The effective active ingredients can prepare wettable powders, water dispersion granules, suspending agents and suspoemulsions by adding an auxiliary agent and an excipient. The bactericidal composition is used for preventing and treating scab, physalosporapiricola, alternaria leaf spot, anthracnose, head blight, rust disease, brown spot, scab disease, rice blast and powdery mildew. The bactericidal composition provided in the invention is capable of resisting rainwater, and has obviously synergistic effect.

The invention discloses a bactericidal composition containing isopyrazam and picoxystrobin and application thereof. The bactericidal composition is composed of main effect components isopyrazam and picoxystrobin in a weight ratio of (1-60):(1-80). The bactericidal composition is used for preventing and treating diseases of cereal crops, vegetables and fruit trees, has higher synergic action, overcomes and postpones the drug resistance of pathogenic bacteria, has the advantages of high bactericidal speed, long duration period and lower application cost, and has obviously better preventing and treating effects than a single agent. The bactericidal composition can be used for preventing and treating fungus diseases on crops, especially can be used for preventing and treating such fungus diseases as rust disease, powdery mildew, leaf spot, brown spot, net blotch, leaf blotch, glume blight, leaf blight and the like, and has better effects than a single agent.

The invention discloses an antibacterial composition containing picoxystrobin and chlorothalonil. The ratio of the active ingredients, namely the ratio of the picoxystrobin and the chlorothalonil is (1-60 percent):(1-80 percent). The composition disclosed by the invention can be used for preventing and controlling various diseases, has an obvious synergetic effect, expands an antibacterial spectrum and has high activity for downy mildew, powdery mildew, leaf spot, anthracnose, rice blast, epidemic disease, rust disease, Septoria nodorum in wheat, leaf blight and brown spot; the dose of pesticide is reduced, the residual pesticide on crops is reduced, and environment pollution is relieved; and safety for human beings and livestock and environmental compatibility are high, and diseases are insusceptible to producing chemical resistance.

The invention relates to a sterilization composition containing probenazole and methoxy acrylates, comprising an active component A, and an active component B, wherein the active component A is selected form probenazole, and the active component B is selected form one of kresoxim methyl, azoxystrobin, pyraclostrobin, trifloxystrobin, kresoxim-methyl, dimoxystrobin, fluoxastrobin, orysastrobin, picoxystrobin, kresoxim-methyl and pyraoxystrobin, wherein a mass ratio of the active component A to the active component B is 80:1-1:60. The composition can be prepared to be wettable powder, water dispersible granules, a suspending agent, a suspoemulsion, an emulsion in water, a micron emulsion, a microcapsule suspending agent or a microcapsule-microcapsule suspending agent, for treating powdery mildew, rice blast, false smut, sheath blight, leaf spot, black spot, rust disease, alternaria leaf spot, bakanae disease, downy mildew, septoria nodorum, net blotch, anthracnose, leaf mold, scab, leaf blight, and tan disease. The composition resists rainwater washing out, and has obvious synergism.

The present invention relates to a Bacillus amyloliquefaciense (Bacillus amyloliquefaciense) BA-KA3 and its application. The Bacillus amyloliquefaciense was preserved in the General Microorganism Center of China Microbiological Culture Collection Management Committee on October 23, 2013, and the preservation number is : CGMCC No.8342; It has obvious antagonistic effect on Botrytis cinerea, wheat scab, wheat sheath blight, tobacco red spot, capsicum phytophthora, capsicum anthracnose, peanut brown spot, pear black Various pathogenic fungi such as spot bacterium and garlic sclerotinia have obvious inhibitory effect; and can significantly improve plant growth indicators such as seed germination rate, germination rate and root length; especially suitable for making agricultural preparations for preventing and treating tomato due to The disease caused by Botrytis cinerea infection and has a certain growth-promoting effect.

The invention relates to a phomopsis asparagi molecular detection primer and a fast detection method and belongs to the technical field of crop disease and damage detection and biology. The specificity primer comprises an upstream primer SF:5'-CCTTACTGTTGCCTCGGCG-3' and a downstream primer SR:5'-CCGGAGCGAGGGTTTAACTA-3'. The primer is adopted to be subjected to PCR amplification (annealing temperature is 56 DEG C) and agarose gel electrophoresis so that specificity amplification products with the fragment length being 401 bp can be specifically amplified in phomopsis asparagi pure DNA, asparagus plants with bacteria and cultivation soil. The detection primer is high in specificity and sensitivity, the detection method is very practical, and operation is easy and fast. Early-stage detection of the phomopsis asparagi disease can be achieved, similar speckle disease and wilt on asparagus can be effectively distinguished, and the primer has great significance in early warning and prevention and control over asparagus stem wilt and prevention and control over diffusing and spreading of diseases.