30 results about "Crop mycosis" patented technology

The invention relates to an antibiotic streptomyces, fermentation product of which can inhibit broad spectrum fungus and protozoan, and field experiment can control crop fungus plant disease and root-knot nematode. The antibiotic streptomyces has good effect, no pollution nuisance and no residue. The antifungal agent has extremely low hazardness for the people and good performance and development prospect for medical and agricultural use. The invention is named as SIM001 antibiotic streptomyces which is Streptomyces antibioticus subspecies xi an, and is preserved as patent in the depositary institution appointed by patent office of state intellectual property office; the preservation data is April 14th, 2005, the name of the depositary institution is CGMCC, and the number of preservation is CGMCC No.1349. The whole cell hydrolysate of the antibiotic streptomyces contains L, L-DAP (Diaminopimelic acid) and no characteristic glucide; the cytoderm belongs to I type and glucide type C; one of the main antibacterial materials is polyene macrocyclic ketolide which belongs to the broad spectrum antifungal substance.

The invention relates to a bactericide composition for preventing and controlling cotton disease. The bactericide composition is a composition of wettable powder, suspending agent, water dispersible granule or seed coating, which is prepared from fluoride ether bacteria amide, thiram and auxiliaries of wetting agent, dispersing agent, filling agent and the like. The fluoride ether bacteria amide and the thiram are mixed by the proportion of 1:4 to 4:1 and the combination of two bactericides with different bactericidal action mechanisms not only plays an obvious synergistic effect for cotton blight, but also is helpful for postponing the drug resistance of pathogenic bacteria. The bactericidal range is wide. The bactericide composition provided by the invention is applicable to prevention and control of various fungal diseases of crops, such as cotton blight, cotton damping off, cotton anthracnose, vegetable root rot and damping off and strawberry blight.

The invention relates to a sophorolipid agricultural antibiotic and an application thereof to control of fungal diseases of crops. The sophorolipid agricultural antibiotic is prepared by the following steps: obtaining a biosurfactant sophorolipid by virtue of a microbial fermentation technology; and then preparing a sophorolipid solution by using distilled water, wherein the sophorolipid solution is used as the sophorolipid agricultural antibiotic. The sophorolipid agricultural antibiotic is uniformly sprayed to the blade surfaces of crops or surfaces of fruits to achieve the purpose of preventing and controlling fungal diseases of crops. The sophorolipid agricultural antibiotic provided by the invention that the production process is simple, the raw materials are easy and convenient to obtain, in the cost is low, the output is high, and no toxic effect is caused to a human body. The prepared sophorolipid agricultural antibiotic is simple in dosage form, easy to prepare, remarkable in preventing and control effect and convenient to use and has a huge application prospect.

The invention provides an agricultural fungicide WYLZ-1349 taking azalomycin F3, azalomycin F4 and a nyphimycin composition as effective constituents, as well as preparation method and application thereof. The preparation method of the agricultural fungicide WYLZ-1349 comprises the following steps of: firstly culturing Streptomyces malaysiensis ECO 00002 with the preservation number of CGMCCNo. 1680; then separately extracting a fermentation culture; breaking the wall of mycelium with acetone or methanol and mixing with a fermentation supernate; and absorbing by macroporous absorption resin for separation; eluting by the acetone or the methanol; concentrating or further purifying an eluent so as to obtain the agricultural fungicide WYLZ-1349 or the azalomycin F3, the azalomycin F4 and nyphimycin; and then adding a carrier or an auxiliary agent so as to obtain a finished product. Test results show that the agricultural fungicide WYLZ-1349 has good effect especially in preventing and controlling rice blast, tobacco brown spot, tomato gray mold and pepper anthracnose and has small using amount, low using cost for peasants, wide usable range, and the like compared with the traditional medicament.

The invention discloses a preventive detection apparatus and method for fungal diseases of crops based on a micro-fluidic chip, belonging to the field of microbiological detection. According to the preventive detection apparatus, the output shaft of a stepping motor is upwardly arranged and fixedly connected with the center of the micro-fluidic chip; multi-stages of identical micro-fluidic detection channels are arranged on the micro-fluidic chip; a pneumatic solenoid valve group is composed of a plurality of pneumatic solenoid valves with a same structure; the end, where an air inlet is located, of each pneumatic solenoid valve is connected with a chip exhausting opening via a flexible exhausting pipe ; and the other end of the airway of each pneumatic solenoid valve is connected with a minisized air pump via an air outlet of the pneumatic solenoid valve. The preventive detection apparatus employs a rotary micro-fluidic chip capturing structure, has the functions of automatic filtering, negative-pressure suction, enrichment detection, electric air exhausting, etc. and can carry out both on-site high-flux detection of the fungal diseases of a crop in a field and portable, rapid and high-efficiency capturing of fungi on different crops, thereby realizing early detection and early warning of diseases.

The invention discloses a bactericidal composition containing difenoconazole and kresoxim-methyl and a preparation method and applications thereof. The bactericidal composition is characterized by comprising difenoconazole and kresoxim-methyl and other assistants, wherein the weight ratio of the difenoconazole to the kresoxim-methyl is 1:1-1:80. The bactericidal composition provided by the invention can be used for prevention of fungal diseases of crops such as cereals and fruit trees, melons and vegetables, has characteristics of wide application range, low cost and good effect. The indoor pharmacodynamic tests prove that the bactericidal composition has obvious synergistic function.

The invention relates to a biological bactericide and a preparation method thereof. The biological bactericide is N-o-chlorophenylacetyl-N-phenazine-1-formylhydrazine which is obtained by virtue of two-step fermentation culture of a genetically improved strain SN36 of pseudomonas choloeaphtis in a liquid culture medium; the collection number of the obtained SN36 in the China General Microbiological Culture Collection Center is CGMCC No.7846. Compared with the prior art, the biological fermentation product has remarkable effects on prevention and treatment of fungal diseases of a plurality of crops, and mass production of the biological bactericide can be realized by virtue of introduction.

The invention relates to the technical field of biological control of plant diseases, and discloses virus-carrying low-toxicity sclerotinia sclerotiorum and application thereof in biological control.The strain is sclerotinia sclerotiorum 767R45, and the preservation number is CCTCC NO: M20419. Volatile substances generated by the sclerotinia sclerotiorum 767R45 strain and 10% of fermentation filtrate of the volatile substances can inhibit the growth of sclerotinia sclerotiorum, rhizoctonia solani, botrytis cinerea, fusarium oxysporum, Bipolaris rice, leptosphaeria biglobosa and geotrichum citri-aurantii hyphae. Besides, the volatile substances and the fermentation filtrate generated by the sclerotinia sclerotiorum 767R45 strain can inhibit the occurrence of gray mold, penicilliosis and penicilliosis in the storage period, the fermentation filtrate can also inhibit the occurrence of sclerotinia sclerotiorum, and the volatile substances can promote the growth of arabidopsis seedlings. According to the invention, phytopathogens become beneficial biocontrol resources, and a new visual angle and a new means are provided for biological control of fungal diseases of crops.

The invention relates to a novel ceriporialacerata species and application thereof in preventing and treating crop fungus diseases. A preservation number of the novel ceriporialacerata species is CGMCC (China General Microbiological Culture Collection Center) No.13899, the novel ceriporialacerata species is classified and named as Ceriporia lacerate HG2011, and the strain has a nucleotide sequence in a C. lacerate HG2011 18SrDNA sequence list and belongs to Ceriporia of Phanerochaetaceae. A bacterial colony is white and in villous and flocculent state, and an appropriate growth temperature is 25 to 28 DEG C. The strain can secrete varieties of extracellular enzymes of chitinase, cellulase, beta-1,3-glucanase, protease and the like; fermentation broth of the strain has a stronger antagonism effect on varieties of plant pathogenic fungi; the strain can be applied to preventing and treating flue-cured tobacco and phytophthora capsici diseases and has larger application potential in an aspect of preventing and treating the plant pathogenic fungi.

The invention discloses a metiram compound bactericide and application thereof. The compound bactericide comprises metiram, berberine and the balance of auxiliaries, wherein in percentage by weight, the content of metiram is 50%-70%, and the weight ratio of metiram to berberine is (24-99): 1. The compound bactericide is used for preventing and treating fungal diseases of crops, especially peach brown rot. Metiram is used as a main component, berberine is added to serve as a synergist, the prevention effect of metiram can be remarkably improved, and pathogenic bacteria are not likely to generate drug resistance to metiram. The compound bactericide can effectively prevent and treat apple ring rot, and the prevention effect is improved by 18% or above.

The invention describes a natural fungicide which comprises gallnut and myrobalan extracts which exhibit a synergistic effect against Alternaria brassicicola, and can be used to control crop fungal diseases. The formulation is a pollution-free microbicide that is degradable and friendly to farm worker, creatures and environment.

A novel agricultural chemical-Songgangmycin as a biochemical for preventing and treating the fungal diseases of agricultural crops is prepared from rice through preparing culture medium from rice and the nutritive liquid containing NaCl, KH2PO4, NaNO3 and FeSO4, inoculating the urticaria blue mold to it, culturing, extracting in organic solvent, carboxylation reaction with the cross-linking agent (4-(P-azidosalicylnitro)butylamine), vacuum concentrating to obtain crystal seeds, and dissolving in aqueous solution.

The invention discloses a thiophanate-methyl compound bactericide and application thereof. The compound bactericide comprises thiophanate-methyl, berberine and the balance of auxiliaries, wherein in percentage by weight, the content of thiophanate-methyl is 30%-60%, and the weight ratio of berberine to thiophanate-methyl is 1: 29-119. The compound bactericide is used for preventing and treating fungal diseases of crops, especially peach brown rot. According to the compound bactericide, thiophanate-methyl serves as a main component, berberine is added to serve as a synergist, the prevention effect of thiophanate-methyl can be remarkably improved, the compound bactericide has the protection and treatment effects, peach brown rot can be effectively prevented and treated, and the compound bactericide is safe to non-target organisms and the environment.

A breeding method of crop fungal disease permanent disease-resistant compound train includes: firstly acquiring the etiology strain of the target crop diseases and the corresponding disease-resistant genetic resources; switching disease-resistant gene in each disease-resistant genetic resource in the skeleton parent, for breeding complemented anti- spectrum breeding intermediate material; using the breeding intermediate material to breed conventional breed near isogenic line or hybrid female parent and male parent near isogenic line with complemented anti- spectrum and identical other characteristics, distributing the disease-resistant genes to each near isogenic line; mixing the near isogenic line conventional breed with complemented anti- spectrum for production, or mixing the female parent near isogenic line with complemented anti- spectrum as the female parent, the male parent near isogenic line with complemented anti- spectrum as the male parent, and then producing the cross-fertilize seeds according to the usual cross-fertilize seed production method. Compound train breed prepared by the invention is applied in the production, which can improve the flexible degree of the crop resistance, realize the crop permanence resistance, meet the scale, standardization and commercialization requirements of the modern agriculture and extend the service life of the breed.