33 results about "Corynespora" patented technology

The invention discloses a strain of plant pathogenic fungi antagonistic bacterium and the application of the plant pathogenic fungi antagonistic bacterium in preventing and curing plant diseases. Theplant pathogenic fungi antagonistic bacterium is bacillus subtilis BEB2 CGMCC No.2243. The plant pathogenic fungi antagonistic bacterium bacillus subtilis BEB2 CGMCC No.2243 can prevent and cure the plant diseases which are caused by banana vascular wilt pathogen, colletotrichum musae, pyricularia grisea, corynespora leaf-fall disease of hevea rubber, bamboo fusarium axysporum and mango anthracnose pathogen, and the plant pathogenic fungi antagonistic bacterium bacillus subtilis BEB2 CGMCC No.2243 in particular can inter-grow with bananas, can survive in the bananas stably, and can prevent andcure banana panama diseases.

The invention relates to propiconazole ultra-low volume preparation and a preparation method thereof. The propiconazole ultra-low volume preparation is characterized by comprising the following components in percentage by weight: 1-20 percent of propiconazole, 1-20 percent of petroleum distillate, 0.1-15 percent of surfactant, 45-90 percent of solvent, 0.05-5 percent of ultraviolet screener, 0.01-5 percent of light stabilizer and 1-20 percent of cosolvent. The preparation method is characterized by comprising the following steps of: adding active ingredients, the solvent and the cosolvent together in a preparation kettle, heating to 15-60 DEG C to ensure that the active ingredients, the solvent and the cosolvent are completely dissolved while stirring, adding the surfactant, the propiconazole, the ultraviolet screener and the light stabilizer and continuously stirring until the mixture becomes a transparent and homogeneous liquid. The invention has convenient process, high use rate of pesticide and few pesticide application times when being used for controlling fungal diseases, thereby being suitable for ultra-low volume spraying controlling various diseases such as powdery mildew, anthracnose, corynespora leaf fall disease, and the like of gum leaves.

The invention provides application of a compound H2 in preparation of a lipopeptide bacteriostatic preparation. The structural formula of the compound H2 is shown as a following formula (please see the formula in the description). The compound H2 is obtained by studying and separating the specific active ingredients of fermentation liquid of bacillus amyloliquefaciens HAB-2, has the wide activity on inhibiting tropical pathogenic fungi, has the effect of promoting growth of some plants, has the preservation effect on fresh fruits, can be applied to preparation of the lipopeptide bacteriostatic preparation and prevention and control of plant fungus diseases, particularly can be applied to tomato early blight, watermelon fusarium wilt, banana fusarium wilt, cotton fusarium wilt, rubber tree anthracnose, a rubber tree corynespora leaf fall disease, tea grey blight, mango anthracnose and / or a rubber tree brown root rot disease and the like and is worthy of application and popularization.

The invention discloses an ultraviolet-resistant and high-temperature-resistant highly virulent IJUV-6 mutant strain IJUV-6 and an application thereof. The present invention firstly provides an anti-ultraviolet and high-temperature-resistant highly virulent IJUV-6 mutagenic strain IJUV-6, which was preserved in the China Center for Type Culture Collection on October 10, 2019, and its preservation number is CCTCC NO: M 2019800. The IJUV‑6 mutant strain of I. javanica has the characteristics of strong tolerance to ultraviolet light and high temperature, fast colony growth rate, and high spore production. It has strong infection and killing effects on rice planthoppers and rice leafhoppers. Insect effect; In addition, the strain is a mutagenic strain of the wild strain IJNL‑N8 of the native I. japonicum in my country, which is not introduced from abroad, and can adapt to the natural environment such as high temperature and strong ultraviolet radiation in rice fields in southern China; therefore, the Java IJUV‑6, a mutant strain of Isystridium clavulata, can be used as an alternative control drug for drug-resistant pests, and has broad application prospects in the preparation of biological agents for the control of rice planthoppers and rice leafhoppers.

The invention discloses a fungicide composition of fluoride containing ether bacteria amide and validamycin, which consists of active components and supplementary materials. The active components are fluoride ether bacteria amide and validamycin, the weight ratio of fluoride ether bacteria amide to validamycin is 1:4-4:1, and the total content of the active components is 10%-60%. The fungicide composition provided by the invention is specially utilized to prevent and control rice sheath blight disease, pyricularia grisea, rice false smut, wheat sharp eyespot, vegetable leaf spot disease, vegetable powdery mildew, pear scab, coniothyrium diplodiella, apple anthracnose, macrophoma kawatsukai, cucumber corynespora target leaf spot and strawberry fusarium wilt and the like.

The invention relates to a preparation method of a medicament for preventing and treating Corynediosporium leaf defoliation disease of rubber tree. The method comprises the following steps: 1) Weighing water thread grass, adding 3-6 times the weight of ethanol with a concentration of 70-90% by volume Aqueous solution, heated and refluxed for 1-3 hours, filtered, ethanol was recovered from the filtrate under reduced pressure, and concentrated until no ethanol was recovered to obtain extract 1; , heating under reflux for 3-6 hours, cooling to room temperature, filtering, adding ethanol to the filtrate until the ethanol content is 50-80% by volume, standing for 12-48 hours, filtering, recovering ethanol from the filtrate under reduced pressure, and concentrating to Extract 2 was obtained until no ethanol was recovered; 3) Combined extracts. The medicament for preventing and treating the Corynesporium leaf defoliation of the rubber tree described in the present invention is a better medicament for preventing and controlling the Corynesporium leaf defoliation of the rubber tree in the field, and its effect is better than some common fungicides.