Control Agent For Soft Rot And Control Method For The Same

Abstract

Provided is a novel control agent for soft rot and a novel control method for the same. The control agent for soft rot of a plant contains 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-alpha,alpha,alpha-trifluoro-2,6-dinitro-p-toluidine as an active ingredient, which is applied to plant cultivation soil.

Description

Technical field

[0001] The present invention relates to a control agent for soft rot of plants such as vegetables, and a method for controlling soft rot using the control agent. Background technique

[0002] Soft rot is a plant disease caused by Ervinia carotovora, which causes softening and rotting of plant tissues. Examples of plants that are targets for soft rot control include vegetables such as cabbage, celery, Japanese radish, tobacco, onions, tomatoes, carrots, Chinese cabbage, potatoes, lettuce, mustard and oilseed rape, among others. Since common pesticides are rarely effective against bacterial diseases, antibiotics such as streptomycin or copper-based fungicides such as Bordeaux mixture are usually used on target plants to achieve disease control. However, antibiotics that have been used to control bacterial diseases such as soft rot are expensive and have problems with the emergence of resistant bacteria. In addition, in the case of using copper-based fungicide...

Examples

Embodiment 1

[0064] (1) Preparation of spray liquid

[0065] Prepared using: 500 g / L 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-α,α,α-trifluoro-2,6-dinitropara Toluidine (fluazinamine (common name), Frowncide SC (trade name), manufactured by Ishihara Sangyo Kaisha, Ltd.) so that the amount of the active ingredient was 250 g ai / 10a (500 mL product / 10a), and the amount of dilution water was 150L / 10a.

[0066] (2) Disease control experiment of Chinese cabbage

[0067] Spray the spray liquid prepared above on the cultivation soil in the field, so that the spraying amount is 0.25g / m 2 (150L / 10a), thereafter, spread the agricultural mulch on the soil. After the planting holes (diameter: about 5 cm) for fixing were made, Chinese cabbage seedlings (cultivar variety: Musou (Musou)) grown for 4 weeks in a plug tray (128 holes / nursery box) were planted, so that in a 6m 2 30 seedlings with three replicates were planted in the experimental plot of the same area.

Embodiment 2

[0087] (1) Preparation of spray liquid

[0088] Prepared using: 500 g / L 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-α,α,α-trifluoro-2,6-dinitropara Toluidine (fluazinam, FrowncideSC (trade name), manufactured by Ishihara Sangyo Kaisha, Ltd.) made the amount of the active ingredient 250 g ai / 10a (500 mL product / 10a), and the amount of dilution water 150 L / 10a.

[0089] (2) Disease control experiment of Chinese cabbage

[0090] Spread the agricultural mulch film on the soil, and make a fixed planting hole (diameter: about 5cm), and then spray the spray liquid prepared above on the planting hole so that the spraying amount is 0.25g / m 2 (150L / 10a), then air dry. Then, Chinese cabbage seedlings (cultivar: Yumebuki) grown for 4 weeks in plug trays (128 holes / seedling box) were planted so as to grow in a 4.8 m 2 34 to 40 seedlings with three replicates were planted in the experimental plot of the same area.

[0091] 50 days after the start of the test, investigate the degre...

Embodiment 3

[0096] (1) Preparation of spray liquid

[0097]Prepared using: 500 g / L 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-α,α,α-trifluoro-2,6-dinitropara Toluidine (fluazinam, FrowncideSC (trade name), manufactured by Ishihara Sangyo Kaisha, Ltd.) so that the amount of the active ingredient is 62.5g ai / 10a (125mL product / 10a), 125g ai / 10a (250mL product / 10a) and 250g ai / 10a (500mL product / 10a), the amount of each dilution water is 150L / 10a.

[0098] (2) Disease control experiment of Chinese cabbage

[0099] Spread the agricultural mulch film on the soil, and make a fixed planting hole (diameter: about 9cm), then, spray the above-mentioned prepared spraying liquid on the planting hole, so that the amount of the active ingredient processed contains 62.5g in the spraying liquid 0.0625g / m in case of ai / 10a active ingredient 2 (150L / 10a), 0.125g / m where the spray liquid contains 125g ai / 10a active ingredient 2 (150L / 10a), 0.25g / m where the spray liquid contains 250g ai / 10a activ...

Technical field

[0001] The present invention relates to a control agent for soft rot of plants such as vegetables, and a method for controlling soft rot using the control agent. Background technique

[0002] Soft rot is a plant disease caused by Ervinia carotovora, which causes softening and rotting of plant tissues. Examples of plants that are targets for soft rot control include vegetables such as cabbage, celery, Japanese radish, tobacco, onions, tomatoes, carrots, Chinese cabbage, potatoes, lettuce, mustard and oilseed rape, among others. Since common pesticides are rarely effective against bacterial diseases, antibiotics such as streptomycin or copper-based fungicides such as Bordeaux mixture are usually used on target plants to achieve disease control. However, antibiotics that have been used to control bacterial diseases such as soft rot are expensive and have problems with the emergence of resistant bacteria. In addition, in the case of using copper-based fungicide...

Examples

Embodiment 1

[0064] (1) Preparation of spray liquid

[0065] Prepared using: 500 g / L 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-α,α,α-trifluoro-2,6-dinitropara Toluidine (fluazinamine (common name), Frowncide SC (trade name), manufactured by Ishihara Sangyo Kaisha, Ltd.) so that the amount of the active ingredient was 250 g ai / 10a (500 mL product / 10a), and the amount of dilution water was 150L / 10a.

[0066] (2) Disease control experiment of Chinese cabbage

[0067] Spray the spray liquid prepared above on the cultivation soil in the field, so that the spraying amount is 0.25g / m 2 (150L / 10a), thereafter, spread the agricultural mulch on the soil. After the planting holes (diameter: about 5 cm) for fixing were made, Chinese cabbage seedlings (cultivar variety: Musou (Musou)) grown for 4 weeks in a plug tray (128 holes / nursery box) were planted, so that in a 6m 2 30 seedlings with three replicates were planted in the experimental plot of the same area.

Embodiment 2

[0087] (1) Preparation of spray liquid

[0088] Prepared using: 500 g / L 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-α,α,α-trifluoro-2,6-dinitropara Toluidine (fluazinam, FrowncideSC (trade name), manufactured by Ishihara Sangyo Kaisha, Ltd.) made the amount of the active ingredient 250 g ai / 10a (500 mL product / 10a), and the amount of dilution water 150 L / 10a.

[0089] (2) Disease control experiment of Chinese cabbage

[0090] Spread the agricultural mulch film on the soil, and make a fixed planting hole (diameter: about 5cm), and then spray the spray liquid prepared above on the planting hole so that the spraying amount is 0.25g / m 2 (150L / 10a), then air dry. Then, Chinese cabbage seedlings (cultivar: Yumebuki) grown for 4 weeks in plug trays (128 holes / seedling box) were planted so as to grow in a 4.8 m 2 34 to 40 seedlings with three replicates were planted in the experimental plot of the same area.

[0091] 50 days after the start of the test, investigate the degre...

Embodiment 3

[0096] (1) Preparation of spray liquid

[0097]Prepared using: 500 g / L 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridyl)-α,α,α-trifluoro-2,6-dinitropara Toluidine (fluazinam, FrowncideSC (trade name), manufactured by Ishihara Sangyo Kaisha, Ltd.) so that the amount of the active ingredient is 62.5g ai / 10a (125mL product / 10a), 125g ai / 10a (250mL product / 10a) and 250g ai / 10a (500mL product / 10a), the amount of each dilution water is 150L / 10a.

[0098] (2) Disease control experiment of Chinese cabbage

[0099] Spread the agricultural mulch film on the soil, and make a fixed planting hole (diameter: about 9cm), then, spray the above-mentioned prepared spraying liquid on the planting hole, so that the amount of the active ingredient processed contains 62.5g in the spraying liquid 0.0625g / m in case of ai / 10a active ingredient 2 (150L / 10a), 0.125g / m where the spray liquid contains 125g ai / 10a active ingredient 2 (150L / 10a), 0.25g / m where the spray liquid contains 250g ai / 10a activ...

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