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1529 results about "Biological pest control" patented technology

Biological control or biocontrol is a method of controlling pests such as insects, mites, weeds and plant diseases using other organisms. It relies on predation, parasitism, herbivory, or other natural mechanisms, but typically also involves an active human management role. It can be an important component of integrated pest management (IPM) programs.

Heavy metal resistance plant growth-promoting bacteria preparation and applying method thereof

The invention relates to heavy metal resistance plant growth-promoting bacteria and a preparation applying method thereof, which belongs to the bioremediation field of heavy metal polluted environment. A bacteria strain D54 with a preservation number of CGMCC No. 3223 belongs to the Burkholderia sp. and has higher resistance to a plurality of heavy metals, wherein the resistances to Pb <2+>, Cd <2+>, Cu <2+>, Zn <2+> respectively reach 800 mg/L, 1500 mg/L, 150 mg/L and 2500 mg/L. In addition, the bacteria strain D54 has the plant growth-promoting functions of producing plant growth hormone (IAA), producing 1-amino-1-carboxyl cyclopropane (ACC) deaminase, secreting siderophore, dissolving inorganic phosphate, fixing nitrogen and the like, has the biological prevention functions of antagonizing plant pathogenic bacteria inbreak and the like, and can obviously improve the biomass of the plants applied the invention and improve the resistance to diseases and stresses. The number of the effective viable bacteria in liquid preparation reaches 1-2 billion/ml and the number of the effective viable bacteria in solid preparation reaches 1 billion/g. Soaking seeds for 1-2 hours in the liquidpreparation which is diluted 100 times and irrigating the diluted liquid preparation 1-2 times (10ml/kg) after 2-3 weeks of the sprouting of the seeds can effectively improve plant viable bacteria infection probability.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI

Overwintering preserving breeding method for aphidius gifuensis

The invention relates to an overwintering preserving breeding method for an aphidius gifuensis and belongs to the technical field of biological control. The overwintering preserving breeding method for the aphidius gifuensis solves the problem that in the prior art, overwintering preservation is performed on the aphidius gifuensis difficultly, and the heavy demand for the aphidius gifuensis in a tobacco planting season in a coming year is difficult to meet. The overwintering preserving breeding method comprises a first step of greenhouse aphidius gifuensis selection which comprises cultivation of host plants, collecting of an aphidius gifuensis source, aphidius gifuensis inoculation in a greenhouse, and purification and rejuvenation; a second step of winter greenhouse aphidius gifuensis preservation which comprises cultivation of aphidius gifuensis preserving plants, aphidius gifuensis inoculation in the greenhouse, and purification and rejuvenation; and a third step of expanding propagation in the greenhouse. The aphidius gifuensis is successfully accumulated and preserved during the time from finish of massive reproduction of the aphidius gifuensis in August to April in a coming year and before massive reproduction of the aphidius gifuensis, and the aphidius gifuensises with enough quantity and good quality are provided for massive reproduction of the aphidius gifuensis in a next year.
Owner:YUXI TABACOO COMPANY OF YUNNAN PROVINCE

Broad-spectrum and highly effective new Bacillus thuringiensis strain, its bacterial agent and application

Belonging to the field of biological control of pests, the invention discloses a Bacillus thuringiensis strain that has a broad spectrum and is highly effective on lepidoptera pests, preparation of its wettable powder and application. The Bacillus thuringiensis YX-1 strain involved in the invention is preserved in China General Microbiological Culture Collection Center, and the preservation number is CGMCC No. 5256. Containing a plurality of insecticidal genes, the strain has a highly effective lethal effect on Cydia molesta, cotton bollworm, fall webworms, Adoxophyes orana Fisher von Roslerstamm, Phalera flavescens Bremer et Grey, carpocapsa pomonella, prodenia litura, plutella xylostella, beet armyworm and other lepidoptera pests. The invention also discloses a method for preparation of wettable powder through the YX-1 strain. The Bacillus thuringiensis YX-1 strain and its wettable powder provided in the invention are mainly used for prevention and treatment of lepidoptera pests on various fruit trees and vegetables, also can be used for prevention and treatment of lepidoptera pests on field crops and garden plants, and have the characteristics of broad spectrum, high efficiency, safety to people, livestock as well as animals and plants, and no environmental pollution, etc.
Owner:HEBEI AGRICULTURAL UNIV.

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

Preparation and application of composite bioactive material taking attapulgite to load bacillus

The invention relates to a method for preparing a composite material which takes modified or unmodified attapulgite as a carrier to immobilize bacillus, belonging to the technical fields of microbial fertilizers, biological control of plant diseases, soil remediation and pollution abatement. A microorganism-mineral immobilization technology is realized by means of preparing a proper amount of attapulgite with a proper amount of bacillus viable bacteria preparation according to a certain technology. The composite material prepared according to the method disclosed by the invention has the advantages that the plant growth can be promoted, the soil-borne diseases, such as root rot, blight, soft rot and the like, of various crops can be inhibited, and the effect of preventing threadworm from spawning is achieved; the composite material further has the capabilities of keeping the local moisture of plant root systems, and enhancing the plant resistance to drought, saline and alkaline as well as oxidization; moreover, the composite material can be further used for purifying organic pollutants in water, absorbing soil heavy metals and relieving soil hardening, so that the effects of soil moisture conservation and fertilizer conservation are achieved. The composite material prepared according to the method disclosed by the invention is an environment-friendly composite material, which has the advantages that environment harm and pollution can be prevented through correct use of the composite material, and a wide application prospect is obtained.
Owner:COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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