• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    The invention relates to a continuous release pheromone composition comprising a pheromone contained in a porous clay material, the clay material having a particle size whose weighted average is less than 0.2 mm, and wherein in one embodiment the clay material is partially coated is. The invention also relates to the process for preparing such a composition and its use in agriculture and to a process for reducing a population of a pest, for example a butterfly or insect, such as Diabrotica virgifera on an agricultural area.
    公开号:AT15023U1
    申请号:TGM224/2015U
    申请日:2015-07-29
    公开日:2016-11-15
    发明作者:
    申请人:Synchem Res Ltd；
    IPC主号:
    专利说明:

    description
    PHEROMONIC COMPOSITION WITH CONTINUOUS RELEASE FIELD OF THE INVENTION
    [0001] The invention relates to a continuous release pheromone composition comprising a pheromone in a porous clay material. The invention also relates to the process for preparing such a composition and its use in agriculture and to a method for reducing the population of a pest.
    BACKGROUND OF THE INVENTION
    Insect pests cause significant losses in agriculture. Many pesticides used to control such pests have a negative impact on the environment and food safety. One prior art approach has been the use of low concentration pheromones to disrupt the reproductive cycle of the insects. As pheromones naturally occur, their environmental impact is usually negligible. However, it remains a challenge to provide pheromones for a sufficient amount of time to disrupt the reproductive cycle throughout the fertile period of the insect.
    For example, the Western corn rootworm (Diabrotica virgifera) is responsible for the destruction of significant quantities of corn. One study estimates that the financial damage caused will amount to 75 million euros in Austria alone in 2014. In the US, about 14 million hectares of arable land are affected, causing estimated losses of $ 1 billion a year. In the EU, losses are estimated at 0.5 billion euros per year. In affected areas, an average of 10% of the harvest is lost due to Diabrotica virgifera. In severely affected areas, losses of up to 90% occur. In addition, Diabrotica quickly spreads to previously unaffected areas. In Austria, the areas affected by Diabrotica spread 40 to 80 km annually.
    Conventional insecticides, such as cypermethrin, tefluthrin and thiacloprid, are associated with numerous disadvantages, such as high toxicity to aquatic organisms and limited activity for a short period of time. In an alternative, more environmentally friendly approach, pheromones can be used to disrupt the reproductive cycle of Diabrotica. When female pheromones are released in a field, male Diabrotica lose their orientation, preventing fertilization. One challenge, however, is the requirement that the pheromones must be present throughout the mating season. Since pheromones can be expensive and repeated spraying of affected areas is undesirable, a continuous release composition is beneficial.
    [0005] With this aim, EP 1 676 480 describes a crystalline substrate to provide the continuous release of pheromones, which addresses the problem of varying environmental conditions on the rate of release. EP 1 064 843 and WO 03/061383 suggest the use of porous clay materials for controlled emission and describe their preparation.
    DESCRIPTION OF THE INVENTION
    It is the object of the present invention to provide a continuous release pheromone composition which is improved over the prior art. In particular, it is desirable to provide a composition that remains on or near the plant for a longer period of time so that insect mating can be prevented as long as possible. Precipitation and wind can easily remove particles, so plant protection is lost.
    [0007] The invention relates to a continuous release pheromone composition comprising a pheromone contained in a porous clay material, the clay material having a particle size of less than 0.2 mm in weighted average.
    Pheromones are chemical compounds that cause social responses in animals of the same species. In particular, the multiplication is often based on the release and recognition of pheromones. Pheromones can be used to confuse the male, making it difficult and almost impossible to find a mate. By reducing the number of larvae, the population can be controlled ecologically. For the purposes of the present invention, a pheromone may be a natural pheromone or a synthetic pheromone, as well as a compound having a pheromone-like action.
    The pheromones of the invention may be a single pheromone or a combination of pheromones directed to one or more organisms. In the context of this invention, "a" means "one or more". The pheromones of the invention include compounds selected from the group consisting of 8-methyldecan-2-yl propionate, tetradecyl acetate, 10-methyldodecyl acetate, 11-dodecenyl acetate, methyl phenylacetate, phenylethyl propionate, (Z) -5-decenylacetate, (Z ) -7-decenylacetate, (E) -8-decenylacetate, (Z) -9-decenylacetate, (Z) -9-hexadecenylacetate, (Z) -9-tetradecenylacetate, (Z) -10-tetradecenylacetate, (Z ) -11-hexadecenyl acetate, (Z) -11-tetradecenyl acetate, (E) -11-hexadecyl acetate, (Z) -11-octadecenyl acetate, (E) -11-tetradecenyl acetate, (E) -12-tetradecenyl acetate, (Z , E) -9,12-tetradecadienyl acetate, (Z, E) -9,11-tetradecadienyl acetate, (Z, Z) -3,13-octadecadienyl acetate, (E, Z) -3,13-octadecadienyl acetate, (E. , Z) -4,10-octadecadienyl acetate, hexadecanal, (Z) -9-hexadecenal, (Z) -11-hexadecenal, (E) -11-hexadecenal, (Z) -13-octadecenal, (Z, Z, Z ) -9,12,15-octadecatrienal, (Z) -8-dodecen-1-ol, (Z) '- 9-tetradecen-1-ol, (Z) -11-hexadecen-1-ol, 2,6 -Dime-thyloctan-1-ol, (Z, E) -9,12-tetradecadien-1-ol, (Z) -13-lene-10-one, (R, Z) - (-) - 5- (1-Decenyl) oxa-cyclopentan-2-one, cis-7-tetradecen-2-one, trans-7-tetradecen-2-one, 4,6-dimethyl -7-hydroxy-nonan-3-one, 2,3-dihydro-2,3,5-trimethyl-6- (1-methyl-2-butenyl) -4H-4-one, (3Z, 6Z, 9S, 10R) -9,10-epoxy-3,6-henicosadiene, (3Z, 6Z, 9S, 10R) -9,10-epoxy-1,3,6-henicosatriene, methyl (Z) -5-tetradecenoate, 14-methyl-1-octadecene, (Z) -3-dodecenyl (E) -2-butenoate and 2,6-dimethyloctyl formate. Preferably, a pheromone of the present invention is active against insects or butterflies such as Diabrotica, Diabrotica virgifera, Diabrotica virgifera virgifera, Cydia pomonella, Eupoecilia ambiguella, Lobesia botrana, Leptinotarsa decemlineata or Psylliodes. Most preferably, the pheromone is 8-methyldecan-2-yl-proprionate.
    Preferably, the concentration of the pheromone is in an effective range, so that the fertilization of the target pest is prevented, the proportion of fertilized females in a treated field up to 80% or up to 70% or up to 60% or up to 50% or more preferably up to 40% of the total female population in the area within 60 days or preferably within 70 days of application of the pheromone. Most preferably, the concentration is in an effective range so that up to 40% of the females are fertilized within 80 days of application of the pheromone.
    Preferably, the concentration of the pheromone in the clay material is between 0.01 and 1.0 g / kg. The concentration is particularly preferably between 0.02 and 0.5 g / kg, more preferably between 0.025 and 0.25 g / kg, particularly preferably between 0.03 and 0.1 g / kg, particularly preferably between 0.035 and 0, 06 g / kg, more preferably between 0.037 and 0.045 g / kg, and most preferably the concentration of pheromone in the clay material is 0.039 g / kg. The inventors have found that such a concentration enables effective and efficient pest control.
    Porous clay materials according to the invention comprise both natural and industrially produced clay materials. Advantageously, such clay materials have the ability to pick up and slowly release pheromones.
    The porous clay materials of the invention have a particle size of less than 0.2 mm. Advantageously, a small particle size, charge and specific surface characteristics may allow the composition to adhere to the plant and / or its environment to avoid flushing away. This can allow long periods of pheromone release and highly effective insect control. This applies in particular to a particle size of less than 0.2 mm of porous clay material and pheromones according to the invention.
    Preferably, the porous clay material comprises a zeolite, more preferably, the clay material is a zeolite. Preferably, the porous clay material comprises clinoptilolite, more preferably the porous clay material is clinoptilolite. Zeolite is a microporous aluminosilicate material that allows large quantities of pheromones to be stored and subsequently released slowly.
    Naturally occurring zeolites are formed when volcanic rock and ash layers react with alkaline groundwater. Zeolites can also be prepared by artificial synthesis. Zeolites are porous structures that can accommodate a wide variety of cations and also have high water storage capacity. Zeolites have an ordered crystal structure with a very large number of cavities and a large active surface area (typically 400 to 600 m2 / g). The inventors have discovered that clinoptilolite is a specific zeolite with particularly advantageous properties for use in continuous release compositions. Alternative clay materials include sepiolite, palygorskite, kaolinath, halloysite, metahalloysite, IIIith, vermiculite, montmorillonite, beidellite, nontronite, saponite, chlorite, attapulgite, zeolites, gibbsite, hematite, goethite, limonite and pyrolusite.
    Preferably, the clay material of the invention is electrostatically charged, allowing a significant portion of the composition to remain on the plant after application, preferably until the plant is harvested. Preferably, an effective amount, that is, an amount to prevent fertilization of the female, remains on the plant for longer than 30 days, longer than 60 days, longer than 70 days, longer than 80 days, longer than 90 days, or longer than 110 days. Due to electrostatic charge, the powder can remain on the plant and even survive heavy and frequent rainfall. Preferably, the clay material is negatively charged. The negatively charged material is particularly preferably the zeolite according to the invention. The negative charge allows the zeolite to adhere to the plant, thereby ensuring the continuous release of the pheromones in the required area. In some embodiments, the powder may be perceived on the surface of the plants with the naked eye, whereby its presence can be confirmed quickly and easily.
    Preferably, the clay material has a particle size which is in the weighted average between 0.1 and 200 pm, more preferably the weighted average particle size of between 0.5 and 100 pm, particularly preferably between 2.5 and 25 pm, especially preferably between 5 and 10 microns, more preferably the weighted average particle size is between 7 and 9 microns, and most preferably the weighted average particle size is about 8 microns. The inventors have found that such a particle size allows effective adhesion of the particles to the plants.
    As used above, particle size is determined based on the weighted average particle size as measured by conventional particle size measurement techniques known to those skilled in the art. Such methods include, for example, sedimentation field flow fractionation, photon correlation spectroscopy, light scattering, and disk centrifugation.
    By the weighted average particle size in a certain range, as described above, it is meant that at least 50% of the particles have a weighted average particle size in this range, as measured by the methods described above. In other embodiments of the invention, at least about 70%, at least about 95%, or at least about 99% of the particles have a weighted average particle size within one of the ranges of values described above.
    In one embodiment, the clay material is not coated. Preferably, the structure of the clay material allows slow release of the pheromones, even without another coating. An uncoated clay material may have lower production costs and / or a lower environmental impact.
    In an alternative embodiment, the surface of the clay material is coated with a coating. Such a coating may comprise a polysaccharide, such as starch, an inorganic alkali metal and / or an organic and / or inorganic acid. Most preferably, the coating is starch. Preferably, the starch may be obtained from root vegetables, such as potatoes or cassava, or from cereals, such as wheat, rice or corn. Preferably, a surface coating may additionally prolong the release of the pheromones, whereby a smaller amount of pheromones may be used for the same results in pest control.
    The coated and uncoated compositions of the invention may be used alone or as a mixture. Preferably, the coated and uncoated compositions of the invention are used in ratios of from 0.25: 1 to 1: 0.25, preferably from 0.5: 1 to 1: 0.5. Most preferably, the ratio is about 1: 1.
    A preferred method for the preparation of the composition of the invention involves the steps of 1) milling the porous clay material, 2) infusing the pheromone, and optionally coating the porous clay material or part of the porous clay material infused with the pheromone.
    The invention also includes the use of the claimed composition in agriculture. Preferably, the composition is used to prevent the fertilization of a female pest, the pest being selected from the group comprising butterflies and insects, in particular Diabrotica, Diabrotica virgifera, Diabrotica virgifera virgifera, Cydia pomonella, Eupoecilia ambiguella, Lobesia botrana, Leptino -tarsa decemlineata or psylliodes.
    The invention also relates to a method of reducing the population of a pest on an agricultural area (for example, a corn field) comprising: contacting the utilized agricultural area and / or the plants growing on that area (for example Example of corn), with the composition according to the invention. Preferably, the method prevents the fertilization of a female pest, wherein the pest is selected from the group comprising butterflies and insects, in particular: Diabrotica, Diabrotica virgifera, Diabrotica virgifera virgifera, Cydia pomonella, Eupoecilia ambiguella, Lobesia botrana, Leptinotarsa decemlineata or Psylliodes.
    The contacting can be carried out by spraying the used agricultural area. Preferably, only one contact per cycle of growth of the plants is needed to significantly reduce the population of the pest and thus also significantly reduce crop damage. Preferably, the damages are reduced by at least 20%, at least 30%, at least 40%, at least 50%, at least 60%, at least 80% or at least 90%.
    The compositions of the invention may be applied to the surface, for example the corn field, in an amount of 3-5 kg / ha, preferably about 4 kg / ha in an aqueous solution, preferably in about 200 to 400 l of water per hectare , The fields are sprayed before the beginning of the mating time of the target pest. For example, when targeting Diabrotica, then the ideal time to spray the fields is mid to late June, preferably as late as possible in June.
    EXAMPLES AND EXPERIMENTAL DATA
    1. To ensure that the described pest control strategy is successful, zeolite having a particle size of 8 pm in weighted average and impregnated with the pheromone 8-methyldecan-2-yl-propionate was used against Diabrotica is active, sprayed on a corn field on July 20, 2014.
    Figure 1 shows the proportion of unfertilized females in a treated cornfield compared to an untreated control (F%, numbers of unfertilized females on the y-axis, x-axis shows the measurement date, control data are shown in black, treated group in gray, the spraying of the plants on July 20, 2014 is represented by a cross on the x-axis). It can be clearly seen that the treatment is associated with a significant increase in unfertilized females compared to the untreated control. Mean values for untreated females in the treated group were 22% with a maximum of 32%. Duration of action was longer than 6 weeks and at least 7 weeks. A strong effect was observed even at the end of the 7 weeks.
    2. In another experiment, the aim was to examine the effectiveness of the pheromone-soaked zeolite particles against Diabrotica at high density. In the experiment, corn plants, for example 8 plants, were tested in cages with a high number of Diabrotica per cage, for example 20, 40, 60, and 80 Diabrotica per cage. The treated group showed a sharp increase in the number of unfertilized females when compared to the untreated control plants. The results show that even at high densities of Diabrotica the treatment still shows a strong effect.
    As can be seen in Figure 2 (y-axis shows the percentage of unfertilized females, number of diabrotica per cage are shown below the graph), the treated group shows a sharp increase in the number of unfertilized females when with the compared to untreated control plants. The results show that even at high densities of Diabrotica the treatment still shows a strong effect.
    3. The compositions of the invention are preferably applied to the field in an amount of 4 kg / ha in 200 to 400 L of water per hectare. The fields are typically sprayed prior to commencement of the mating time of the target pest. For example, the ideal time to spray when targeting Diabrotica is mid to late June, preferably as late as possible in June. Best results were obtained when the corn was at least 1.3 m high.
    权利要求:
    Claims (14)
    [1]
    claims
    Claims 1. A continuous release pheromone composition comprising a pheromone contained in a porous clay material, characterized in that the clay material has a particle size of less than 0.2 mm in weighted average.
    [2]
    2. The composition according to claim 1, characterized in that the clay material is a zeolite, wherein the zeolite is preferably clinoptilolite.
    [3]
    3. The composition according to any one of the preceding claims, characterized in that the pheromone is 8-methyldecan-2-yl-propionate.
    [4]
    The composition according to any one of the preceding claims, characterized in that the concentration of the pheromone in the clay material is effective to prevent the fertilization of a female pest, the concentration of the pheromone in the clay material preferably being between 0.01 and 1.0 g / kg.
    [5]
    5. The composition according to any one of the preceding claims, characterized in that the clay material has a particle size which is in the weighted average between 0.1 and 200 pm.
    [6]
    6. The composition according to any one of the preceding claims, characterized in that the surface of the porous clay material is not coated.
    [7]
    7. The composition according to claim 1 to 5, characterized in that the surface of the porous clay material is coated with a coating.
    [8]
    The composition of claims 1 to 5, comprising uncoated and coated porous clay material, preferably in a ratio of about 1: 1.
    [9]
    The composition according to claim 7 or 8, characterized in that the coating comprises a polysaccharide such as starch, an inorganic alkali metal or an organic or inorganic acid.
    [10]
    A process for producing a sustained release pheromone composition according to any one of claims 1 to 9, which comprises (1) milling the porous clay material, (2) infusing the pheromone, and (3) optionally, coating the porous clay material.
    [11]
    11. Use of a pheromone composition according to claim 1 to 9 in agriculture.
    [12]
    The use of claim 11 for preventing the fertilization of a female pest selected from the group consisting of butterflies and insects, said insect being preferably Diabrotica virgifera.
    [13]
    The use of claims 11 to 12, wherein the composition remains on the plant for at least 60 days after application.
    [14]
    14. A method of reducing the population of a pest on an agricultural area, comprising: contacting the utilized agricultural area and / or the plants growing on said area with the composition of any one of claims 1 to 9, wherein the composition preferably preventing the fertilization of a female pest selected from the group comprising butterflies and insects, the insect being preferably Diabrotica virgifera. For this 2 sheets of drawings
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    同族专利:
    公开号 | 公开日
    EP3090631A1|2016-11-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    ES2156481B1|1998-03-03|2002-02-01|Univ Valencia Politecnica|PROCEDURE FOR OBTAINING MODIFIED INORGANIC MOLECULAR SIZES AND ITS USE AS SEMIOCHEMICAL ISSUERS.|
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    JP4436644B2|2003-09-24|2010-03-24|サンケイ化学株式会社|Sustained release pheromone formulation|
    AT508914B1|2010-01-29|2011-05-15|Lithos Ind Minerals Gmbh|METHOD FOR PRODUCING A GRANULATE IMPREGNATED WITH A PHEROMONE FOR THE PROTECTION OF MAIZE CULTURES|CN110710528A|2018-07-12|2020-01-21|金黏生技有限公司|Slow release insect prevention/luring material|
    法律状态:
    2019-03-15| MM01| Lapse because of not paying annual fees|Effective date: 20180731 |
    优先权:
    申请号 | 申请日 | 专利标题
    EP15166969.4A|EP3090631A1|2015-05-08|2015-05-08|Sustained release pheromone formulation|
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