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    • 专利摘要:

    公开号:NL1039388A
    申请号:NL1039388
    申请日:2012-02-17
    公开日:2012-09-04
    发明作者:Norifumi Yasuda；Atsushi Fukuchi
    申请人:Sumitomo Chemical Co；
    IPC主号:
    专利说明:

    METHOD FOR CONTROLLING PLANT DISEASE IN ORNAMENTAL BULBOUS PLANTS
    Technical Field
    The present invention relates to a method for controlling plant disease in ornamental bulbous plants.
    Background Art A large number of chemical compounds for controlling plant diseases have heretofore been developed and provided for practical use.
    Tolclofos-methyl and azoxystrobin are known as compounds with plant disease controlling activity (see, for example, The Pesticide Manual Thirteenth Edition (published by British Crop Protection Council)).
    However, these compounds are not satisfactory in some cases, and excellent methods have been needed for controlling plant diseases in accordance with the situation.
    Summary of Invention
    Thus, the present invention is claimed as follows: [1] A method for controlling plant diseases in an ornamental bulbous plant, which comprises planting a bulb of the ornamental bulbous plant into a soil where the ornamental bulbous plant is to be grown, said bulb having been treated with an effective amount of tolclofos-methyl and azoxystrobin.
    [2] The method of [1], wherein the amount of azoxystrobin is from 1 to 1000 parts by weight relative to 100 parts by weight of tolclofos-methyl.
    [3] The method of [1] or [2], wherein the total amount of tolclofos-methyl and azoxystrobin is from 1 to 5000 g per 1000 bulbs of ornamental bulbous plant.
    [4] The method of any one of [1] to [3], wherein the bulb has been treated by immersing the bulb in a water suspension containing tolclofos-methyl and azoxystrobin.
    [5] The method of any one of [1] to [3], wherein the bulb has been treated by spraying or coating the surface of the bulb with tolclofos-methyl and azoxystrobin.
    [6] The method of any one of [1] to [5], wherein the ornamental bulbous plant is a plant selected from the group consisting of tulip, lily, gladiolus and hyacinth.
    [7] The method of any one of [1] to [5], wherein the ornamental bulbous plant is tulip.
    [8] A method for culturing an ornamental bulbous plant, which comprises planting a bulb of the ornamental bulbous plant into a soil where the ornamental bulbous plant is to be grown, said bulb having been treated with an effective amount of tolclofos-methyl and azoxystrobin.
    [9] The method of [8], wherein the amount of azoxystrobin is from 1 to 1000 parts by weight relative to 100 parts by weight of tolclofos-methyl.
    [10] The method of [8] or [9], wherein the total amount of tolclofos-methyl and azoxystrobin is from 1 to 5000 g per 1000 bulbs of ornamental bulbous plant.
    [11] The method of any one of [8] to [10], wherein the bulb has been treated by immersing the bulb in a water suspension containing tolclofos-methyl and azoxystrobin.
    [12] The method of any one of [8] to [10], wherein the bulb has been treated by spraying or coating the surface of the bulb with tolclofos-methyl and azoxystrobin.
    [13] The method of any one of [8] to [10], wherein the ornamental bulbous plant is a plant selected from the group consisting of tulip, lily, gladiolus and hyacinth.
    [14] The method of any one of [8] to [13], wherein the ornamental bulbous plant is tulip.
    [15] A bulb of tulip which bulb has been treated with tolclofos-methyl and azoxystrobin.
    The present invention can control plant diseases in ornamental bulbous plants and is useful for culturing ornamental bulbous plants.
    Embodiment of the Invention
    The method according to the present invention for controlling plant diseases comprises planting a bulb of the ornamental bulbous plant into a soil where the ornamental bulbous plant is to be grown, in which the bulb has been treated with an effective amount of tolclofos-methyl and azoxystrobin.
    Tolclofos-methyl and azoxystrobin are described, for example, on pages 979 and 52 of The Pesticide Manual, Thirteenth Edition (published by British Crop Protection Council)
    These compounds may be commercially available formulations or produced using a known process. Alternatively, a commercially available formulation containing tolclofos-methyl and/or azoxystrobin may be used in the present invention.
    The amount of tolclofos-methyl to be used in the present invention is generally from 1 to 1000 parts and preferably 10 to 500 parts by weight relative to 100 parts by weight of tolclofos-methyl.
    For the present invention, tolclofos-methyl and azoxystrobin may be simply admixed or combined. However, in general, as tolclofos-methyl and azoxystrobin, a formulation which contains an azoxystrobin and a formulation which contains tolclofos-methyl are admixed or combined, or a formulation which contains tolclofos-methyl and azoxystrobin are used.
    Such formulations include oil solutions, emulsions, flowables, water-dispersible powders, water-dispersible granules, dust powders, granules and the like, which can be obtained by mixing tolclofos-methyl and/or azoxystrobin with an inert carrier and, if necessary, adding a surfactant or other formulation additives. Such formulations contain an active compound(s), i.e. tolclofos-methyl and/or azoxystrobin in the total amount of usually from 0.1 to 99% and preferably from 0.2 to 90% by weight of the formulations.
    Solid carriers to be used for the formulation include fine powders or granules composed of minerals such as kaolin clay, attapulgite clay, bentonite, montmorillonite, acid white clay, pyrophyllite, talc, diatomaceous earth and calcite; natural organic materials such as corn cob powder and walnut husk powder; synthetic organic materials such as urea; salts such as calcium carbonate and ammonium sulfate; or synthetic inorganic materials such as synthetic hydrated silicon oxide. Liquid carriers include aromatic hydrocarbons such as xylene, alkylbenzene and methylnaphthalene; alcohols such as 2-propanol, ethylene glycol, propylene glycol and ethylene glycol monoethyl ether; ketones such as acetone, cyclohexanone and isophorone; vegetable oil such as soybean oil and cotton seed oil; petroleum aliphatic hydrocarbons; esters; dimethylsulfoxide; acetonitrile; and water.
    Surfactants include anionic surfactants, such as alkyl sulfate ester salts, alkyl aryl sulfonate salts, dialkyl sulfosuccinate salts, polyoxyethylene alkyl aryl ether phosphate ester salts, lignosulfonate salts and naphthalene sulfonate formaldehyde polycondensates; and non-ionic surfactants such as polyoxyethylene alkyl aryl ethers, polyoxyethylene-alkylpolyoxypropylene block copolymers and sorbitan fatty acid esters; and cationic surfactants such as alkyltrimethylammonium salts .
    Other formulation additives include water-soluble polymers, such as polyvinyl alcohol and polyvinylpyrrolidone; polysaccharides such as Arabic gum, alginic acid and salts thereof, CMC (carboxymethyl-cellulose) and Xanthan gum; inorganic materials such as aluminum magnesium silicate and alumina sol; preservatives; coloring agents; and stabilizing agents such as PAP (acid phosphate isopropyl) and BHT.
    Ornamental bulbous plants to be used in the method of the present invention for controlling plant diseases include Lily (Lilium spp), Tulip (Tulipa gesneriana), Hyacinth (Hyacinthus orientalis), Muscari (Muscari latifolium), Allium (Allium cristophii), Tritoma (Kniphofia spp), colchicum (Colchicum autuinnale), Pineapple lily (Eucomis autumnalis), Sandasonia (Sandersonia aurantiaca), Gloriosa (Gloriosa superba), Narcissus (Narcissus spp), Daffodil (Narcissus pseudonarcissus), Amaryllis (Hippeastrum spp), snowdrop (Galanthus spp), snowflake (Leucojum aestivum), Diamond lily (Bodenii Nerine), Zefiransasu (Zephyranthes carinata), licorice (Lycoris spp), Amazon lily (Eucharis grandiflora), Crocus (Crocus spp), Gladiolus (Gladiolus spp), Montbretia (Crocosmia * crocosmiiflora), German iris (Iris spp), Saffron (Saffron crocus), Dahlias (dahlias spp), Ranunculus (Ranunculus asiaticus), Curcuma (Curcuma spp), Oxalis (Oxalis deppei), Canna (Canna indica), and Cyclamen (Cyclamen persicum).
    Among them, a plant selected from the group consisting of tulip, lily, gladiolus and hyacinth is preferred, and tulip is more preferred, for the present invention.
    Plant diseases that can be controlled by the present invention include soil-borne diseases, such as Bulb rot (Fusarium spp. Fusarium oxysporum, Fusarium solani, Rhizopus spp. Rhizopus necans, Rhizopus stolonifer), Damping off (Rhizoctonia spp. Rhizoctonia solani), Bare batch, brown batch, Leaf rot (Rhizoctonia spp. Rhizoctonia solani), Bulb-coat rot (Rhizoctonia spp. Rhizoctonia solani), Sclerotial blight (Sclerotium spp. Sclerotium rolfaii), and Crown rot (Pythium spp. Pythium irregulare, P.spinosum, P. ultimum).
    In the present invention, a bulb of the ornamental bulbous plant can be treated by immersion of the bulb into tolclofos-methyl and azoxystrobin, by spraying or coating the surface of the bulb with tolclofos-methyl and azoxystrobin, or the like.
    Immersion of the bulb can be conducted by immersing the bulb into a water suspension containing tolclofos-methyl and azoxystrobin. The immersion is conducted usually for 1 second to ten days, preferably for 1 hour to 4 days, or preferably for 1 second to 1 day, more preferably for 1 second to 12 hours.
    In case of spraying the surface of the bulb with tolclofos-methyl and azoxystrobin, for example, powder or water suspension each containing tolclofos-methyl and azoxystrobin can be used for the spraying.
    In case of coating the surface of the bulb with tolclofos-methyl and azoxystrobin, for example, water suspension containing tolclofos-methyl and azoxystrobin can be used for the coating.
    In the present invention, a water suspension containing tolclofos-methyl and azoxystrobin can be prepared by diluting a formulation which contains tolclofos-methyl and azoxystrobin with water, or by mixing a formulation of tolclofos-methyl and a formulation of azoxystrobin, if necessary followed by diluting the mixture with water, or the like. If the formulation which contains tolclofos-methyl and azoxystrobin is a water suspension, the formulation can be used as it is for the present invention.
    In the present invention, although the amount of tolclofos-methyl and azoxystrobin is appropriately determined depending on the species of the ornamental bulbous plant and the size of the bulb, the type and the degree of occurrence of the pi^nt disease, the forms of tolclofos-methyl and azoxystrobin to be used, the timing of the treatment, and weather conditions. The total amount of tolclofos-methyl and azoxystrobin is generally from 1 to 5000 g and preferably from 10 to 1000 g per 1000 bulbs of ornamental bulbous plants in case of spraying or coating the bulbs. In case of immersion of the bulbs, the total concentration of tolclofos-methyl in water suspension to be used is generally from 0.01 to 1000000 ppm and preferably from 0.1 to 100000 ppm.
    The ornamental bulbous plants treated by the method as described above can be grown by using a conventional growth method. As it is possible to protect ornamental bulbous plants from plant diseases such as caused by soil-borne pathogens in case of planting the bulbs of the ornamental bulbous plants according to the method described above, which bulbs have been treated with tolclofos-methyl and azoxystrobin, healthy growth of the ornamental bulbous plants may be promoted by the method of the present invention.
    Examples
    The present invention is further described in detail below by reference, for example, to test examples. However, the present invention is not limited to the following examples.
    In the following examples, unless otherwise specified, the term "part" refers to "part by weight."
    Initially, reference formulation examples are shown below.
    Reference Formulation Example 1
    An emulsion is obtained by well mixing 2.5 parts of tolclofos-methyl, 1.25 parts of azoxystrobin, 14 parts of polyoxyethylene styryl phenyl ether, 6 parts of calcium dodecylbenzenesulfonate and 76.25 parts of xylene.
    Reference Formulation Example 2 A flowable formulation is obtained by mixing 5 parts of tolclofos-methyl, 5 parts of azoxystrobin, 35 parts of a mixture of white carbon and a polyoxyethylene alkyl ether sulfate ammonium salt (weight ratio 1:1) and 55 parts of water, followed by pulverizing the mixture by wet grinding.
    Reference Formulation Example 3 A flowable formulation is obtained by mixing 10 parts of tolclofos-methyl, 10 parts of azoxystrobin, 1.5 parts of sorbitan trioleate and 23.5 parts of an aqueous solution containing 2 parts of polyvinyl alcohol, then by pulverizing the mixture by wet grinding, further by adding 45 parts of an aqueous solution containing 0.05 part of Xanthan gum and 0.1 part of aluminum magnesium silicate to the mixture, still further by adding 10 parts of propylene glycol, followed by blending the resulting mixture by stirring.
    Reference Formulation Example 4 A flowable formulation is obtained by mixing 20 parts of tolclofos-methyl, 5 parts of azoxystrobin, 1.5 parts of sorbitan trioleate and 28.5 parts of an aqueous solution containing 2 parts of polyvinyl alcohol, then by pulverizing the mixture by wet grinding, further by adding 45 parts of an aqueous solution containing 0.05 part of Xanthan gum and 0.1 part of aluminum magnesium silicate to the mixture, still further by adding 10 parts of propylene glycol, followed by blending the resulting mixture by stirring.
    Reference Formulation Example 5
    Forty parts of tolclofos-methyl, 5 parts of azoxystrobin, 5 parts of propylene glycol (manufactured by Nacalai Tesque, INC.), 5 parts of Soprophor FLK (manufactured by Rhodia Nicca, Ltd.), 0.2 part of an anti-form C emulsion (manufactured by Dow Corning Corporation), 0.3 part of proxel GXL (manufactured by Arch Chemicals, Inc.) and 49.5 parts of ion-exchange water are mixed to prepare a bulk slurry. To 100 parts of the slurry, 150 parts of glass beads (Φ=1 mm) are added, and the slurry is ground for 2 hours while it is cooled with coolant water. After the grinding, the glass beads are removed by filtration, thereby obtaining a flowable formulation.
    Reference Formulation Example 6
    An AI premix is obtained by mixing 50 parts of tolclofos-methyl, 0.5 part of azoxystrobin, 38.5 parts of NN kaolin clay (manufactured by Takehara Chemical Industrial Co., Ltd.), 10 parts of Morwet D425 and 1.5 parts of Morwer EFW (manufactured by Akzo Nobel N.V.). The premix is pulverized with a jet mill to obtain powder.
    Reference Formulation Example 7 A granule was obtained by well grinding and mixing 1 part of tolclofos-methyl, 1 part of azoxystrobin, 1 part of synthetic hydrated silicon oxide, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 65 parts of kaolin clay, and then by adding water to well knead the mixture, followed by granulation and drying.
    Reference Formulation Example 8 A water-dispersible powder is obtained by well grinding and mixing 40 parts of tolclofos-methyl, 1 part of azoxystrobin, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 54 parts of synthetic hydrated silicon oxide.
    Reference Formulation Example 9 A powder is obtained by well grinding and mixing 1 part of tolclofos-methyl, 10 parts of azoxystrobin, 79 parts of kaolin clay, and 10 parts of talc.
    Reference Formulation Example 10
    An emulsion is obtained by well mixing 2 parts of tolclofos-methyl, 0.25 part of azoxystrobin, 14 parts of polyoxyethylene styryl phenyl ether, 6 parts of calcium dodecylbenzenesulfonate and 77.75 parts of xylene.
    Reference Formulation Example 11 A flowable formulation is obtained by mixing 10 parts of tolclofos-methyl, 2.5 parts of azoxystrobin, 1.5 parts of sorbitan trioleate and 30 parts of an aqueous solution containing 2 parts of polyvinyl alcohol, then by pulverizing the mixture by wet grinding, further by adding 47.5 parts of an aqueous solution containing 0.05 part of Xanthan gum and 0.1 part of aluminum magnesium silicate to the mixture, still further by adding 10 parts of propylene glycol, followed by blending the resulting mixture by stirring.
    Reference Formulation Example 12 A granule was obtained by well grinding and mixing 20 parts of tolclofos-methyl, 1 part of azoxystrobin, 1 part of synthetic hydrated silicon oxide, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 47 parts of kaolin clay, and then by adding water to well knead the mixture, followed by granulation and drying.
    Reference Formulation Example 13 A water-dispersible powder is obtained by well grinding and mixing 5 parts of tolclofos-methyl, 10 parts of azoxystrobin, 5 parts of calcium lignin sulfonate, 3 parts of sodium lauryl sulfate and 77 parts of synthetic hydrated silicon oxide.
    Next, test examples are shown below.
    Test Example 1 A test solution is prepared by mixing tolclofos- methyl 50% (w/v) flowable (Product name: Rizolex® Flowable;
    Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name: Amistar®20 Flowable; Syngenta Japan K.K.) in water. Into the test solution, the bulbs of tulip (variety "Angelique") are immersed for 24 hours. Then one bulb having been immersed is planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs are allowed to grow in the green house (the treated plot).
    On the other hand, cultivation is carried out as described above, except that the bulb is not treated with the test solution (the untreated plot).
    After a predetermined time period, each of the treated and non-treated plots is observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence is calculated according to Equation 1 for each of the treated and untreated plots, and the disease control value is calculated according to Equation 2 for the treated plot.
    Percentage disease incidence — (number of non-germinated bulbs + number of diseased plants)/ (total number of bulbs) x 100 (Equation 1)
    Disease control value = (A-B)/ A x 100 (Equation 2), A: Percentage disease incidence in the untreated plot; B: Percentage disease incidence in the untreated plot
    The results show that plant diseases are controlled in the treated plot.
    Test Example 2 A test solution was prepared by mixing tolclofos-methyl 50% (w/v) flowable (Product name: Rizolex® Flowable;
    Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name: Amistar®20 Flowable; Syngenta Japan K.K.) in water. Into the test solution, the bulbs of tulip (variety "Angelique") were immersed for 24 hours. Then one bulb having been immersed was planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs were allowed to grow in the green house (the treated plot).
    On the other hand, cultivation was carried out as described above, except that the bulb was not treated with the test solution (the untreated plot) .
    After a predetermined time period, about 10 weeks, each of the treated and non-treated plots was observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence was calculated according to Equation 1, shown in Test Example 1, for each of the treated and untreated plots, and the disease control value was calculated according to Equation 2, shown in Test Example 1, for the treated plot.
    The results are shown in Table 2.
    Test Example 3 A test solution is prepared by mixing tolclofos-methyl 50% (w/v) flowable (Product name: Rizolex® Flowable;
    Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name: Amistar®20 Flowable; Syngenta Japan K.K.) in water.
    Into the test solution, the bulbs of lily (variety "Party Diamond") are immersed for 24 hours. Then one bulb having been immersed is planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs are allowed to grow in the green house (the treated plot).
    On the other hand, cultivation is carried out as described above, except that the bulb is not treated with the test solution (the untreated plot).
    After a predetermined time period, each of the treated and non-treated plots is observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence is calculated according to Equation 1, shown in Test Example 1, for each of the treated and untreated plots, and the disease control value is calculated according to Equation 2, shown in Test Example 1, for the treated plot.
    The results show that plant diseases are controlled in the treated plot.
    Test Example 4 A test solution was prepared by mixing tolclofos-methyl 50% (w/v) flowable (Product name: Rizolex® Flowable;
    Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name: Amistar®20 Flowable; Syngenta Japan K.K.) in water. Into the test solution, the bulbs of lily (variety "Party Diamond") were immersed for 24 hours. Then one bulb having been immersed was planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs were allowed to grow in the green house (the treated plot).
    On the other hand, cultivation was carried out as described above, except that the bulb was not treated with the test solution (the untreated plot).
    After a predetermined time period, about 15 weeks, each of the treated and non-treated plots was observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence was calculated according to Equation 1, shown in Test Example 1, for each of the treated and untreated plots, and the disease control value was calculated according to Equation 2, shown in Test Example 1, for the treated plot.
    The results are shown in Table 4.
    Test Example 5 A test solution is prepared by mixing tolclofos-methyl 50% (w/v) flowable (Product name: Rizolex® Flowable;
    Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name: Amistar®20 Flowable; Syngenta Japan K.K.) in water.
    Into the test solution, the bulbs of gladiolus (variety "Cayenne") are immersed for 24 hours. Then one bulb having been immersed is planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs are allowed to grow in the green house (the treated plot).
    On the other hand, cultivation is carried out as described above, except that the bulb is not treated with the test solution (the untreated plot) .
    After a predetermined time period, each of the treated and non-treated plots is observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence is calculated according to Eguation 1, shown in Test Example 1, for each of the treated and untreated plots, and the disease control value is calculated according to Equation 2, shown in Test Example 1, for the treated plot.
    The results show that plant diseases are controlled in the treated plot.
    Test Example 6 A test solution was prepared by mixing tolclofos-methyl 50% (w/v) flowable (Product name: Rizolex® Flowable;
    Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name: Amistar®20 Flowable; Syngenta Japan K.K.) in water.
    Into the test solution, the bulbs of gladiolus (variety "Cayenne") were immersed for 24 hours. Then one bulb having been immersed was planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs were allowed to grow in the green house (the treated plot).
    On the other hand, cultivation was carried out as described above, except that the bulb was not treated with the test solution (the untreated plot).
    After a predetermined time period, about 7 weeks, each of the treated and non-treated plots was observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence was calculated according to Equation 1, shown in Test Example 1, for each of the treated and untreated plots, and the disease control value was calculated according to Equation 2, shown in Test Example 1, for the treated plot.
    The results are shown in Table 6.
    Test Example 7 A test solution is prepared by mixing tolclofos-methyl 50% (w/v) flowable (Product name: Rizolex® Flowable;
    Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name Amistar®20 Flowable; Syngenta Japan K.K.) in water.
    Into the test solution, the bulbs of hyacinth (variety "Odysseus") are immersed for 24 hours. Then one bulb having been immersed is planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs are allowed to grow in the green house (the treated plot).
    On the other hand, cultivation is carried out as described above, except that the bulb is not treated with the test solution (the untreated plot).
    After a predetermined time period, each of the treated and non-treated plots is observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence is calculated according to Equation 1, shown in Test Example 1, for each of the treated and untreated plots, and the disease control value is calculated according to Equation 2, shown in Test Example 1, for the treated plot.
    The results show that plant diseases are controlled in the treated plot.
    Test Example 8 A predetermined concentration of a test solution was prepared by mixing tolclofos-methyl 50% (w/v) flowable (Product name: Rizolex® Flowable; Sumitomo Chemical Co. Ltd.) and azoxystrobin 20% (w/w) flowable (Product name Amistar®20
    Flowable; Syngenta Japan K.K.) in water.
    Into the test solution, the bulbs of hyacinth (variety "Odysseus") were immersed for 24 hours. Then one bulb having been immersed was planted per pot at the depth of 5 cm from the surface of the soil in five pots (12 cm in diameter and 15 cm in depth) filled with soil. The bulbs were allowed to grow in the green house (the treated plot).
    On the other hand, cultivation was carried out as described above, except that the bulb was not treated with the test solution (the untreated plot).
    After a predetermined time period, about 15 weeks, each of the treated and non-treated plots was observed for the presence or absence of germination and the emergence of disease in the sprouts. The percentage disease incidence was calculated according to Equation 1, shown in Test Example 1, for each of the treated and untreated plots, and the disease control value was calculated according to Equation 2, shown in Test Example 1, for the treated plot.
    The results are shown in Table 8.
    权利要求:
    Claims (14)
    [1]
    A method for controlling plant diseases in an ornamental bulb crop, comprising planting a bulb of the ornamental bulb crop in a soil in which the ornamental bulb crop is to be grown, and wherein the bulb has been treated with an effective amount of tolclophos-methyl and azoxystrobin.
    [2]
    The method as set forth in claim 1, wherein the amount of azoxystrobin is from 1 to 1000 parts by weight relative to 100 parts by weight of tolclophos-methyl.
    [3]
    The method as set forth in claim 1 or claim 2, wherein the total amount of tolclophos-methyl and azoxystrobin is from 1 to 5000 g per 1000 spheres of ornamental bulb.
    [4]
    The method as set forth in any one of claims 1 to 3, wherein the sphere is treated by immersing the sphere in a water suspension containing tolclophos-methyl and azoxystrobin.
    [5]
    The method as set forth in any one of claims 1 to 3, wherein the sphere is treated by spraying or coating the outside of the sphere with tolclophos-methyl and azoxystrobin.
    [6]
    The method as set forth in any one of claims 1 to 5, wherein the ornamental bulb is a plant selected from the group consisting of: tulip, lily, gladiolus and hyacinth.
    [7]
    The method as set forth in any one of claims 1 to 5, wherein the ornamental bulb consists of tulips. The method for growing an ornamental bulb crop, which comprises plants of a new bulb bulb bulb, in a soil where the ornamental bulb bulb is to be grown, and wherein the bulb is treated with an effective amount of tolclofos-methyl and azoxystrobin.
    [8]
    The method as set forth in claim 8, wherein the amount of azoxystrobin is from 1 to 1000 parts by weight relative to 100 parts by weight of tolclophos-methyl.
    [9]
    The method as set forth in claim 8 or claim 9, wherein the total amount of tolclophos-methyl and azoxystrobin is from 1 to 5000 g per 1000 spheres of ornamental bulb.
    [10]
    The method as set forth in any one of claims 8 to 10, wherein the sphere is treated by immersing the sphere in a water suspension with tolclophos-methyl and azoxystrobin.
    [11]
    The method as set forth in any one of claims 8 to 11, wherein the sphere is treated by spraying or coating the surface of the sphere with tolclophos-methyl and azoxystrobin.
    [12]
    The method as set forth in any one of claims 8 to 12, wherein the ornamental bulb is a plant selected from the group consisting of: tulip, lily, gladiolus and hyacinth.
    [13]
    The method as set forth in any one of claims 8 to 13, wherein the ornamental bulb consists of tulips.
    [14]
    15. A bulb of the tulip, the bulb being treated with tolclophos-methyl and azoxystrobin.
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    同族专利:
    公开号 | 公开日
    NL1039388C2|2012-09-26|
    JP2012193162A|2012-10-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2011043583|2011-03-01|
    JP2011043583|2011-03-01|
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