36results about How to "Control bacterial wilt" patented technology

The invention relates to a composition for inhibiting tomato bacterial wilt and an application thereof. Mineral powder and organic fertilizers are uniformly mixed according to a mass ratio of (45 to 60 percent):(40 to 50 percent) to be applied into soil so that the mass content of the composition in the soil reaches 2 to 4 percent, and the mineral powder is a mixture consisting of 5 to 15 mass parts of quartz, 10 to 15 mass parts of alkali feldspar, 10 to 20 mass parts of apatite, 5 to 10 mass parts of hydromica, 3 to 5 mass parts of vermiculite, 10 to 15 mass parts of chlorite, 12 to 15 massparts of smectite, 5 to 10 mass parts of attapulgite and 5 to 10 mass parts of kaolinite. The composition can be used for effectively preventing and treating the tomato bacterial wilt, and the prevention and treatment effect is as high as 89.99 percent.

The invention provides a Pestalotic acid compound with antibacterial activity. Hyperparasitism Pestalotiopsis neglecta strains are cultured in a fermented mode, extracted and separated to obtain the compound. The Pestalotic acid compound is easy to obtain, has high antibacterial activity and can be used as an antibacterial agent for preventing and controlling plant bacterial wilt, and a new path is provided for developing antibacterial agents and preventing and controlling plant diseases.

The invention discloses a Paenibacillus polymyxa strain for preventing and controlling plant bacterial wilt, which is named Paenibacillus polymyxa ZJU0901 through identification and is conserved in China Center for Type Culture Collection (CCTCC) positioned in Wuhan University, Luojia Hill, Wuhan. The conservation date of the strain is July 19th, 2009, and the conservation number of the strain is CCTCC NO:M209157. The strain can produce inhibiting effect on the growth of different biochemical types of strain of ralstonia solanacearum under in vitro conditions and can effectively prevent and control plant bacterial wilt.

The invention discloses a strain of Paenibacillus macerans, which is named as Paenibacillus macerans ZJU0902 after identification, and is preserved in the Chinese Type Culture Collection Center (CCTCC) located at Wuhan University, Luojia Mountain, Wuhan City. The date is July 19, 2009, and the deposit number is CCTCC NO: M 209158. The invention can inhibit the growth of different biochemical strains of R. solanacearum under in vitro conditions, and can effectively prevent and cure plant bacterial wilt.

The invention provides a Streptomyces flavinus solid fermentation medium, a preparation method and a fermentation method thereof, a fermentation product, a biocontrol product and an application, and relates to the technical field of microbial fermentation. The Streptomyces luteus solid fermentation medium comprises the following components in parts by weight: 40-50 parts of bran, 15-25 parts of rice husk, 25-35 parts of rice bran, 3-7 parts of calcium carbonate and water. The fermentation method of Streptomyces flavinus includes: optionally after seed activation and liquid seed cultivation of Streptomyces luteus strains, fermenting and culturing by using Streptomyces luteus solid fermentation medium to obtain a fermentation product. The present invention alleviates the defects of the existing Streptomyces flavinus with few viable counts and sporulations. The present invention adopts the above-mentioned culture medium for solid fermentation culture, has a short fermentation period and a large number of viable counts, is suitable for industrial production, and obtains a fermentation product It has remarkable effects in preventing and treating bacterial wilt of crops, and improves the quality and yield of crops.

The invention discloses a class of 2-mercapto-5-substituent-1,3,4-thia(oxa)diazole derivatives for preventing and treating bacterial and fungal diseases of crops. Due to their excellent physiological activity, these derivatives are It has received more attention in medical aspects, but its agricultural activity has not been reported yet. This study shows that these compounds can effectively inhibit bacterial disease pathogens such as rice bacterial blight, rice bacterial stripe, tobacco bacterial wilt, tomato bacterial wilt, and wheat head blight, potato late blight, and apple rot. , Pepper Fusarium Wilt, Cucumber Botrytis, Rapeseed Sclerotinia and other fungal disease pathogens. At the same time, 2-mercapto-5-substituent-1,3,4-thia(oxa)diazole derivatives are used to prevent and treat bacterial and fungal diseases of crops, with simple structure, simple preparation process, low production cost and broad application prospects . Has the following general formula.

The invention provides a microbial agent for preventing and treating crop root system diseases and an application thereof, and belongs to the technical field of microbial preparations. The microbial agent comprises the following components in parts by weight: 1-5 parts of pseudomonas fluorescens, 2-6 parts of bacillus flexus, 1-3 parts of bacillus subtilis, 1.5-4.5 parts of lactobacillus plantarum, 4-8 parts of an antioxidant and 4-9 parts of a stabilizer. The microbial agent can prevent and treat the crop root system diseases, and can prevent and treat pepper bacterial wilt, strawberry root rot, soybean root rot and cucumber fusarium wilt. After the microbial agent provided by the invention is used, the crop root system diseases can be prevented and treated, and the prevention and treatment effects are 85% or above.