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863 results about "Bacterial wilt" patented technology

Bacterial wilt is a cucurbit disease caused by the pathogen Erwinia tracheiphila, a Gram-negative bacterium. Cucumber and muskmelon plants are most susceptible, but squash, pumpkins, and gourds may also become infected.

Biocontrol bacteria strain preventing and curing plant disease

The invention provides a biocontrol bacterial strain for preventing and treating plant diseases and its bacterial agent, belonging to the field of biological control. The strains used are Gram-negative bacteria, identified as Lysobacter enzymogenes, and the strain code is OH11. Strain OH11 has no flagella but has slippage, can produce various extracellular hydrolytic enzymes including chitinase, β-1,3-glucanase and protease, and can effectively inhibit the growth of fungi and bacteria. The antibacterial zone diameters of strain OH11 against Sclerotinia sclerotiorum and Phytophthora capsici were both greater than 22.0 mm; the antagonism against potato ring rot was stronger, and the diameter of the inhibition zone reached 50 mm. The OH11 strain was inoculated into the seed tank, cultivated to the logarithmic growth phase, and the seed liquid was connected to the production tank for cultivation. The medium used in the production tank was the same as that of the seed tank. The liquid fermentation adopts aerobic submerged fermentation and fed-batch process, the dissolved oxygen is 15%-20%, the fermentation temperature is 30°C, the fermentation time is 72h, and the initial pH value is 7.5. After the fermentation is completed, the culture solution is taken out of the tank and directly packed into liquid dosage forms with plastic packaging barrels or packaging bottles, or subpackaged into solid dosage forms with peat adsorption packaging bags. The biocontrol strain OH11 can effectively control plant pathogenic fungi, bacteria, nematodes and other diseases, and the overall control effect is 50%-70%. In the greenhouse pot experiment, the control effects of OH11 on pepper blight and tomato bacterial wilt reached 83.6% and 86.4%, respectively. Strain OH11 has the characteristics of broad antibacterial spectrum, high activity, and environmental safety. In today's serious pesticide pollution, zymolysobacterium and its bacterial agent will be a good substitute.
Owner:NANJING AGRICULTURAL UNIVERSITY

Antagonistic bacteria preventing and removing continuous cropping tomato bacterial wilt and microbial organic fertilizer thereof

The invention relates to antagonistic bacteria preventing and removing continuous cropping tomato bacterial wilt and a microbial organic fertilizer produced thereby, which belong to the technologies of agricultural intensified production. The antagonistic bacteria NJQL-18 with the significant antagonistic effect for pathogenic bacteria of the tomato bacterial wilt is obtained by separation, solidfermentation is further carried out on the antagonistic bacteria and organic materials for preparing the microbial organic fertilizer, the fertilizer contains more than 1 multiplied by 10<8>/g of NJQL-18, the content of total nitrogen is 4-5% (more than 90% is organic nitrogen), the total content of nutrients of nitrogen, phosphorus and potassium is 6-10%, and the content of organic matters is 30-35%. Tests show that the microbial organic fertilizer can lead the antagonistic bacteria to be rapidly propagated after being applied into the soil and form heterotic groups in the soil, and the biological prevention efficiency in the soil with the serious tomato bacterial wilt can be more than 80%. The long-term application of the microbial organic fertilizer in the soil without the formation ofcontinuous cropping obstacles can prevent the occurrence of the continuous cropping tomato bacterial wilt to a great extent.
Owner:南京农业大学资产经营有限公司

Liquid biological organic fertilizer with high content of organic substances and preparation method

The invention provides a liquid biological organic fertilizer with high content of organic substances and a preparation method. The fertilizer is characterized by comprising the following components by weight: 60% of a humic acid release inhibitor, 0.4% of a composite biological agent, 10% of fulvic acid potassium, 12% of soluble nitrogen-phosphorus-potassium raw materials, 9% of a chelating medium trace element agent, 8.47% of a soil conditioner, 0.93% of compound sodium nitrophenolate and 0.1% of naphthalene acetic acid; and the fertilizer is prepared by mixing, heating, chelating, concentrating, cooling, microorganism adding, filtering and residue removing. The invention has the following beneficial effects: plant nutrition is directly supplemented; the contents of absorbable organic substances for a root system in soil are rapidly supplemented; growth of the root system is rapidly promoted; absorption area of the root system is enlarged; the chelating medium trace element agent can not be fixed by the soil and exists in a free state in the soil, so the chelating medium trace element agent is easy to be captured and absorbed by the root system in the soil; physiological diseases and pests are prevented from occurrence; quality of an agricultural product is improved; root-rot disease and stem-rot disease are prevented from occurrence; occurrences of fusarium and verticillium wilts and bacterial wilt are reduced; meanwhile, the fertilizer is capable of resisting salinity and alkalinity, resisting continuous cropping diseases, and killing soil-borne diseases.
Owner:山西年马农业科技股份有限公司

Method for identifying resistance to tobacco bacterial wilt during seedling stage

The invention relates to a seedling stage identification method for the resistance of tobacco to the bacterial wilt. The seedling stage identification method comprises the steps of heat preservation pool construction, pool water heating and circulation, wilt bacterium inoculation, tobacco seedling, disease state investigation and grading. The method replaces a conventional field identification result with a seedling stage identification result, identifies a great amount of material in a smaller area, carries out the identification a plurality of times annually, improves the reliability of the result, shortens the identification cycle, saves the site and test cost, and covers little floor space. The seedling stage identification method for the resistance of tobacco to the bacterial wilt is characterized by rapid disease development, good result repeatability, and the like. The seedling stage identification method for the resistance of tobacco to the bacterial wilt can effectively remove the interference on the resistance result caused by soil temperature difference, strain pathogenicity difference, strain quantity difference and other diseases, thereby benefiting the recurrence and comparison of results from different years and different labs. The difference between the attack rates of infection resistant varieties and the disease indexes is obvious; and the appraisal result of the resistance of the variety is basically consistent with the perennial resistance appraisal result obtained by others. The method has greater application potential in the resistance identification and resistance heredity rule study of disease resistant resources and breeding medium materials.
Owner:YUNNAN ACAD OF TOBACCO AGRI SCI

Tobacco-black-shank-resisting and tobacco-bacterial-wilt-resisting bio-control strain Trb3

The invention belongs to the technical field of plant protection, and relates to a tobacco-black-shank-resisting and tobacco-bacterial-wilt-resisting bio-control strain Trb3. The bio-control strain is a bacillus subtilis. A method for preparing a microbial agent by using the strain Trb3 comprises the steps that: the strain Trb3 is subjected to oscillation culturing in an LB culture solution for 36-40h under a speed of 180rpm under temperature of 28 DEG C; the obtained material is centrifuged for 10min under a speed of 6000rpm; the material is diluted by using sterile water, such that the microbial agent is prepared, wherein a viable bacteria total concentration in the microbial agent finished product is 1*10<9>-1*10<10>u/ml. The Trb3 strain microbial agent is applied for root dipping before tobacco transplanting or for root irrigating during tobacco transplanting, and for root irrigating after tobacco transplanting and right before disease periods of tobacco black shank and tobacco bacterial wilt. In a greenhouse, a controlling effect of the Trb3 strain microbial agent against tobacco black shank reaches 72.3%, and a controlling effect of the Trb3 strain microbial agent against tobacco bacterial wilt reaches 65.7%. When the Trb3 strain microbial agent is applied in field, a controlling effect of the Trb3 strain microbial agent against black shank and tobacco bacterial wilt is 61.04%.
Owner:TOBACCO RES INST CHIN AGRI SCI ACAD +2

Special-purpose seedling-raising controlled-release fertilizer for tobacco seedling-raising plate and preparation method of fertilizer

InactiveCN104045478ALong release periodReduce bacterial wiltFertilizer mixturesDiseaseInsect pest
The invention discloses a special-purpose seedling-raising controlled-release fertilizer for a tobacco seedling-raising plate and a preparation method of the fertilizer, belongs to the technical field of pesticides and solves problem that the existing fertilizer is low in utilization rate and cannot prevent tobacco diseases and insect pests. A weight ratio of N to P to K in a film-coating controlled-release fertilizer is (15-20):(4-10):(6-15); the film-coating controlled-release fertilizer is further added with 0.1%-0.5% of fungicide, wherein the fungicide is prepared from the following materials: tobacco, black false hellebore, garlic, pyrethrum, ailanthus, mandala, uniflower swisscentaury root and weeping willow. The controlled-release fertilizer disclosed by the invention has a long release period, realizes satisfying demands of crops on nutrients such as nitrogen, phosphor, potassium, calcium, sulfur and the like, in the whole growth period by single-dose application. Meanwhile, an occurrence rate of diseases such as tobacco bacterial wilt, black shank and root rot, is greatly reduced, infection of germs in a seedling-raising period is avoided, and occurrence of diseases of stalks which are transplanted in a large field is greatly reduced. And meanwhile, the fertilizer is prevented from adding for many times, and labor cost is greatly lowered.
Owner:SHANDONG LINYI TOBACCO

Microorganism plant vaccine capable of controlling tomato bacterial wilt disease

ActiveCN102978132AGood endogenous performanceDiffusion fastBiocideBacteriaMicroorganismRalstonia solanacearum
The invention relates to microorganism plant vaccine capable of controlling continuous tomato bacterial wilt disease, and belongs to the agricultural intensive production technology. According to the microorganism plant vaccine capable of controlling the tomato bacterial wilt disease, a ralstonia solanacearum sibling bacterium pearson ralstonia eutropha (Ralstoniapickettii) NJQL-A6 is isolated from the rhizosphere of a healthy tomato, and the ralstonia eutropha has a weaking inhibited impact on a bacterial wilt pathogenic bacteria ralstonia eutropha (Ralstonia solanacearum) panel. However, the ralstonia eutropha possesses powerful colonization capability on the tomato rhizosphere and inside a plant, and can inhibit the infection of the ralstonia eutropha to a tomato plant. Experiments show that after the vaccine is irrigated to be applied to soil, the vaccine can breed rapidly so that an advantage group is formed in the soil, and the biocontrol efficiency can be reached up to more than 70% in the soil where the tomato bacterial wilt disease is severe. By inoculating the biocontrol bateria on the tomato plant with the root being infected by the bacterial wilt on the overground part, the further development of the disease can be effectively controlled.
Owner:NANJING AGRICULTURAL UNIVERSITY

Bacillus subtilis capable of decomposing phosphorus and high producing polyglutamic acid and application thereof

The invention relates to bacillus subtilis with a stronger phosphorus decomposing effect and stronger gamma-polyglutamic acid producing capacity. Furthermore, the bacillus subtilis has a better preventing and treating effect on varieties of plant diseases and a plant growth promoting effect. A preservation serial number of the bacillus subtilis JCD-H-16 with phosphorus decomposing, disease preventing and growth promoting effects disclosed by the invention is CGMCC NO.13663, a preservation date is February 16th in 2017, and the bacillus subtilis has multiple effects of decomposing phosphorus, preventing diseases, promoting growth, high producing gamma-polyglutamic acid, increasing yield, improving quality, having a wide antibacterial spectrum and the like. A bacterial strain and a fungicideof the bacillus subtilis disclosed by the invention can effectively prevent and treat powdery mildew, bacterial wilt, gray mold, rice sheath blight disease, pimento anthracnose, damping off and the like; broad-spectrum antibacterial is achieved, and effects are stable and durable; the bacillus subtilis can be applied to developing a bacterial fertilizer and a microbial pesticide preparation integrated with phosphorus decomposing, gamma-polyglutamic acid producing and disease preventing and treating. When the bacterial fertilizer of the bacillus subtilis disclosed by the invention is applied,about one half of a nitrogen fertilizer and a phosphorus fertilizer can be reduced, and an obvious yield increasing effect is further obtained.
Owner:FOSHAN YANHUI BIOTECH CO LTD

Bacillus subtilis PTS-394 for preventing and controlling soil-borne diseases of solanaceous fruit vegetables and application thereof

The invention relates to a biocontrol bacterial agent. An effective active constituent consists of bacillus subtilis PTS-394. The biocontrol bacterial agent is characterized in that: the biocontrol bacterial agent is aqueous solution or wettable powder. The aqueous solution comprises the following components in percentage by weight: bacillus subtilis PTS-394 with 2 *1,010 cfu/mL of content of bacteria, 0.5 percent of NNO (sodium methylene naphthalene sulfonate), 6 percent of SDBS (sodium dodecyl benzene sulfonate) and 0.1 percent of sodium benzoate. The wettable powder comprises the following components in percentage by weight: 40 percent of bacillus subtilis PTS-394 viable bacterium raw powder with 5 *1,010 cfu/g of content of bacteria, 7 percent of NNO (sodium methylene naphthalene sulfonate), 3 percent of polyethylene glycol, 5 percent of SDBS (sodium dodecyl benzene sulfonate) and 45 percent of light calcium carbonate. The biocontrol bacterial agent is poured into vegetable roots when applied and is used for preventing and controlling vegetable soil-borne diseases such as solanaceous fruit vegetable blight and bacterial wilt mainly; and the content of effective agent components is between 104 and 108 cfu/mL or between 104 and 108 cfu/g after finished product agents are diluted. The biocontrol bacterial agent has the advantages that: the aims of preventing and controlling two kinds of soil-borne diseases by means of one kind of biocontrol bacterial agent are fulfilled by introducing the bacillus subtilis PTS-394 which is safe to people and livestock and has better inhibition effect on the solanaceous fruit vegetable blight and the bacterial wilt; the using amount of chemical agents is reduced, and the agent cost is reduced; and the ecological environment is improved, and the residues of the chemical agents in the vegetables are reduced and the same time.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES

Antagonistic bacteria for preventing and eliminating the bacterial wilt of continuous cropping tobacco and their microbial organic fertilizer

ActiveUS20120045427A1Improve bioavailabilitySmoothly get through phosphorin sensitive periodBiocideBio-organic fraction processingBacteroidesBiotechnology
The present invention relates to the antagonistic bacteria that are used to prevent and eliminate tobacco bacterial wilt and their microbial organic fertilizer, which belong to the technology for agricultural intensive production. The present invention separates two antagonistic bacteria (Brevibacillus brevis NJL-25 and Bacillus cereus NJL-14) that have remarkable antagonistic action against the pathogens of tobacco bacterial wilt. Microbial organic fertilizer is produced from these antagonistic bacteria and organic compost. Wherein, the content of each of NJL-25 and NJL-14 is above 1×1010 cfu/g, the content of total nitrogen is 4˜5% (above 90% of the nitrogen is organic nitrogen), the content of total nitrogen-phosphorus-kalium nutrient is 6˜10% and the content of organic matter is 30˜35%. As indicated by experiments, after the microbial organic fertilizer is applied into soil, it will enable rapid multiplication of the antagonistic bacteria into a dominant microflora in the soil and achieve more than 97.6% of biocontrol rate of tobacco bacterial wilt in the soil suffering from tobacco bacterial wilt. If the microbial organic fertilizer is applied in the soil without continuous cropping obstacle in a long time, it can prevent the occurrence of the bacterial wilt of continuous cropping tobacco to a great extent.
Owner:JIANGSU NEW GROUND BIO FERTILIZER ENG CENT +1

Antagonistic bacteria NJL-14 for preventing and controlling continuous-cropping tobacco bacterial wilt

The invention relates to antagonistic bacteria NJL-14 for preventing and controlling continuous-cropping tobacco bacterial wilt, which belongs to intensive agricultural production technology. According to the invention, a microbial organic fertilizer is produced from two antagonistic bacteria (brevibacillus brevis NJL-25 and bacillus cereus NJL-14) which have a remarkable antagonistic function on pathogenic bacteria of the tobacco bacterial wilt and are obtained by separation, and organic fertilizers, wherein 1 gram of the microbial organic fertilizer contains more than 1*10<10> NJL-25 and 1*10<10> NJL-14, and has the total nitrogen content of 4 to 5 percent (organic nitrogen content is over 90 percent), the total nitrogen-phosphorus-potassium content of 6 to 10 percent and the content of organic matters of 30 to 35 percent. Tests prove that the microbial organic fertilizer, after being applied to soil, can fast multiply the antagonistic bacteria to form a dominant group in the soil, achieve the biological prevention and control rate of over 97.6 percent on the bacterial wilt in the soil with the tobacco bacterial wilt, and prevent the occurrence of the continuous-cropping tobacco bacterial wilt to a great extent after being applied for long to the soil without continuous cropping obstacles.
Owner:四川奥甘霖农业科技有限公司

Bacillus amyloliquefaciens FQS38 and application thereof

The invention relates to an antibiological inoculant, wherein an effective active ingredient of the antibiological inoculant is composed of bacillus amyloliquefaciens FQS38. The antibiological inoculant is characterized by being capable of conducting colonization on the roots of tomatoes, promoting the growth of tomatoes as well as preventing and treating the soil-borne disease of the tomatoes. In addition, the antibiological inoculant can secrete protease, cellulase, siderophores, auximones, gibberellins and other antibacterial and growth promoting ingredients. The antibiological inoculant is an aqueous solution which mainly prepared from the following ingredients in proportion: bacillus amyloliquefaciens FQS38 fermentation liquor (the bacterium content is 1*1010-2*1010cfu/mL) and 0.1 to 0.5% of corrosion remover with the pH value being 5.0 to 6.0. After being diluted, the antibiological inoculant is filled into the roots of the tomatoes in the colonization process so as to prevent and treat the bacterial wilt and the marrow necrosis disease of the tomatoes; and then the subsequent root filling is carried out according to the water-fertilizer rule. After the finished drug is diluted, the effective bacterium content is 106 to 108cfu/mL. The antibiological inoculant has the advantages that the bacillus amyloliquefaciens FQS38 has a good prevention and treatment effect on the bacterial soil-borne disease of the tomatoes, can promote the growing of the tomatoes, has no toxicity and pathogenicity, is safe for people and livestock and is environment-friendly, thereby being possibly applied to field production.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES

Dry-cultured paddy rice growth promoting and seedling strengthening agent

The invention relates to a dry-cultured paddy rice growth promoting and seedling strengthening agent comprising effective components of, by weight: 60 to 80% of an acidic NPK fertilizer, 0 to 5% of a trace fertilizer, 0.5 to 2.5% of a bacteriostatic preparation, 5 to 15% of an acidity regulating synergist, 0.05 to 0.15% of a chemical regulating preparation, and 5 to 15% of an organic auxiliary agent. When the agent provided by the invention is used on paddy rice directly sowed on dry paddy fields, the seedlings are well-arranged and strong, and are not separated from fertilizers. The roots of the paddy rice are well developed, and the resistances of the paddy rice are high. With the disease preventing function of a special bactericidal agent, manifestations and root causes of diseases can both be treated, and occurrences of rice seedling drooping diseases and bacterial wilts can be effectively prevented. As a result of demonstrational applications of the growth promoting and seedling strengthening agent in 500 acreages of fields in two years, disease preventing and seedling strengthening effects of the agent is substantial. The development and popularization of the agent assist in filling up a gap in domestic researches, and provides a positive effect in the popularization of a paddy rice direct dry sowing technology.
Owner:秦树国

Bacillus amyloliquefaciens strain for prevention and treatment of tomato bacterial wilt and microbial organic fertilizer thereof

The invention relates to the field of microbial fertilizers, and particularly relates to a bacillus amyloliquefaciens strain T-5 for the prevention and treatment of tomato bacterial wilt and a microbial organic fertilizer thereof. The preservation number of the strain T-5 is CGMCC NO.8547. The T-5 containing living bacteria count of the strain T-5 containing microbial organic fertilizer disclosed by the invention is not less than 1.0*10<8> cfu/g. The invention also provides a method for preparing the strain T-5 containing microbial organic fertilizer. The strain T-5 disclosed by the invention is a specific efficient strain for inhibiting the growth of tomato bacterial wilt; the microbial organic fertilizer disclosed by the invention is rich in organic matters, amino acids and small molecule polypeptides, does not have a series of problems caused by the use of chemical pesticides, and both can be applied in feeding blocks and big fields; and the microbial organic fertilizer has the function of an organic fertilizer, and biocontrol bacteria contained in the microbial organic fertilizer are implemented through various growth promoting and biocontrol mechanisms, thereby achieving the effects of promoting growth and preventing and treating tomato bacterial wilt.
Owner:湖南慧谷农业生态研究院有限公司
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