Tea saponin granular formulation for killing nematode and preparation method thereof
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A technology of tea saponin and nematicides, applied in the direction of nematicides, botany equipment and methods, biocides, etc., can solve the problems of high price, high residue and high toxicity of nematicides
Inactive Publication Date: 2009-07-22
ANHUI AGRICULTURAL UNIVERSITY
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[0009] The technical problem to be solved by the present invention is to provide a low-toxicity, high-efficiency, no-residue, low-cost, helpful for the current situation of the lack of nematicides in the pesticide market, and the high residue, high toxicity and high price of existing nematicides. Dispersion and absorption of components and beneficial to the ecological balance of plant rhizosphere soil microbial flora, tea saponin nematode killing granules that are selective to target nematodes and promote the growth of hosts, and preparation methods thereof
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Embodiment 1
[0025] Example 1. Take camellia oleifera or tea seed cake, crush it, pass through a 10-mesh sieve, extract in countercurrent with 80% industrial ethanol aqueous solution 10 times the weight of camellia oleifera or tea seed cake, extract for 1.0 hour, extraction tank temperature: 50°C, concentrate, dry, and get tea Saponin coarse powder, tea saponin purity greater than 65%.
[0026] Take 40kg of tea saponin and 10kg of Tween 80, fully wet and mix them with diesel oil until it becomes a paste, and add them into a mixing kettle with a stirrer. Then crush 50kg of clay into granules, pass through a 10-mesh sieve, gradually add it to the above mixing kettle, mix for 0.5-1.0 hours under stirring conditions, and then press it into granules through a granulator, pass through a 10-60 mesh sieve, The fineness is 1680-2917 microns. After the solvent is volatilized, the tea saponin nematicide granule product is obtained, which can be packaged and used. The active ingredient of tea saponin...
Embodiment 2
[0027] Example 2. Tea saponin extraction method is the same as in Example 1.
[0028] Take 50kg of tea saponin, add 20kg of alkyl sulfonate and sulfurous acid pulp waste liquid, fully wet and mix with diesel oil until it becomes a paste, and add it into a mixing kettle with a stirrer. Then crush 30kg of bean cake and slag kaolin into granules, pass through a 10-mesh sieve, gradually add to the above-mentioned mixing kettle, mix under stirring conditions for 0.5-1.0 hours, then press into granules through a granulator, pass through 10-60 mesh Sieve, the particle fineness is 1680~2917 microns, after the solvent volatilizes, obtain tea saponin nematicide granule product, can be packaged afterward, use, and its tea saponin active ingredient is not less than 25%.
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Abstract
The invention relates to a tea saponin nematocide granule and a method for preparing the same, which belongs to the field of plant source biological pesticides. The invention aims to provide the tea saponin nematocide granule which has low toxicity and high efficiency, no residue and low cost, is advantageous for the ecological balance of the plant rhizosphere soil microflora and is selective to a target nematode and can promote the growth of a host, and the method for preparing the same. The tea saponin nematocide granule comprises the following raw material components in portion by weight: 40 to 50 portions of tea saponin, 10 to 20 portions of auxiliary agent, and 30 to 50 portions of stuffing, wherein the auxiliary agent is one or more than two of tween-80, waste liquor of sulfite pulp, lignin and derivative sulfonate, naphthalene and alkyl naphthalene formaldehyde synthesis sulfonate, and alkyl sulfonate; and the stuffing is one or more than two of red brick, clay, cake, slag kaolin, diatomite and white carbon black. Test results show that the tea saponin nematocide granule not only has actively for killing nematodes and selectivity to the target nematode, but also is advantageous for the ecological balance of the plant rhizosphere soil microflora and can promote the growth of the host.
Description
technical field [0001] The invention relates to a nematicide granule with tea saponin as the main active ingredient and a preparation method thereof, belonging to the field of botanical biological pesticides. technical background [0002] Tea saponin is a pentacyclic triterpenoid compound extracted from the cakes of various tea seeds (Camellia oleifera or Camellia sinesis), which has surface activity, physiological activity, fish poisoning activity and hemolytic properties. In production, tea dry water is used to control rice sheath blight, and tea seeds are used to control oncomelania among folks; in the past ten years, with the maturity of tea saponin extraction technology, there have been many domestic research reports on the application of tea saponin in the field of pesticides , such as the insecticidal synergistic activity of tea saponin on insects, and the inhibitory effect on some plant pathogenic fungi, but there are no research reports and patent reports on the use...
Claims
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