CN1759674A - Composition of fungicide for preventing and curing graw mold of tomato - Google Patents

Abstract

The invention relates to a fungicide composition for preventing and treating gray mold of tomato. The composition contains pyrimethanil, and procymidone or iprodione, or cyanimethanil, or thiabendazole, or diethofocarb, or difenazim, or hymexazol, and also contains auxiliary agents and/or Or filler, pyrimethanil and procymidone, or iprodione, or cyanifluzamide, or thiabendazole, or diethofencarb, or difenazim, or the ratio of hymexazol based on the mass fraction of the active ingredient is 1:6-6:1, the mass fraction of additives and/or fillers in the composition is 50%-75%, the growth rate method is used to test its indoor toxicity, and the low cost and obvious synergistic ones are selected. Best composition. It overcomes the problems of poor control effect and high cost of existing chemical agents.

Description

Fungicide composition for controlling tomato gray mold

Technical field:

The invention relates to a fungicide composition containing pyrimethanil (Scarmel) and used for preventing and treating gray mold of tomato.

Background technique:

Botrytis cinerea is the main disease of tomato, seriously affecting the yield and quality of tomato. Because the pathogens are very easy to produce drug resistance, resulting in a large amount of control drugs, high cost, but the control effect is getting worse. At present, the medicaments used to prevent and treat the disease mainly include procymidone, iprodione, diethomcarb, chlorothalonil, carbendazim, pyrimethanil, etc.

Pyrimethanil is the latest generation of fungicides that have appeared abroad in recent years. It has protective, leaf penetrating and root systemic activities, and has excellent preventive, therapeutic and especially eradicative effects on gray mold of grapes, strawberries, tomatoes, onions, peas, cucumbers, eggplants and fruit trees. Its mechanism of action is to inhibit the protein secretion of pathogenic bacteria and reduce the level of certain hydrolytic enzymes, which are related to the necrosis of parasitic tissues caused by pathogenic bacteria. Pyrimethanil has no cross-resistance with the currently used triazoles, dithioformates, benzomiazoles, and diethofencarb fungicides, so it has excellent activity against resistant or sensitive pathogens.

Invention content:

The object of the present invention is to overcome the problems of poor control effect and high cost of existing agents, and provide a pyrimethanil-containing agent composition with low cost and good control effect for preventing and treating tomato gray mold.

The technical solution of the present invention is to select pyrimethanil and other fungicides that have special effects on Botrytis cinerea to make a composition, use the growth rate method to measure its indoor toxicity, and select the most effective one with low cost and obvious synergistic effect. good composition.

A fungicide composition for preventing and treating Botrytis cinerea of the present invention contains pyrimethanil, and procymidone or iprodione, or cyanimethanil, or thiabendazole, or dimethocarb, or difenazol, or hymexazol, also contains adjuvants and/or fillers, pyrimethanil and procymidone, or iprodione, or cyanamide, or thiabendazole, or dithofencarb, or difenazol, or The proportion of mezylazol is 1:6-6:1 based on the mass fraction of active components, and the mass fraction of the auxiliary agent and/or filler is 50%-75% of the composition. The described auxiliary agent or filler is: 12 Sodium Alkylbenzene Sulfonate, Sodium Fatty Alcohol Polyoxyethylene Ether Sulfate, Nongru 0203B, Polyoxyethylene Glycol Ester, Polyoxyethylene Alkylphenol, Sodium Lignin Carbonate, Xanthan Gum, Carboxymethyl Cellulose, Any three or more of white carbon black, light calcium carbonate, ethylene glycol, propylene glycol and water.

A fungicide composition for preventing and treating Botrytis cinerea according to the present invention is characterized in that the composition contains pyrimethanil, and procymidone, or cyanpromethanil, or diethofencarb, or thiabendazole, pyrimidine The ratio of mycamine to procymidone or cyanaprozil or diethofencarb or thiabendazole is 1:6-6:1 based on the mass fraction of the active components, preferably the mass fraction ratio is 1:4-4:1.

The fungicide composition for preventing and treating gray mold of tomato according to the present invention is prepared into a solution, wettable powder, suspension or soluble powder with adjuvants and/or fillers or water, and is used for preventing and treating gray mold of tomato, or controlling crops and Botrytis of vegetables.

The various components of the composition of the present invention have different action mechanisms, and they synergize with each other to reduce the drug resistance of germs, so the bactericidal effect of the composition is obviously higher than that of each single component used alone.

The composition of the present invention can also be used in combination with other insecticides, herbicides, protective agents, growth regulators, plant nutrients or soil conditioners.

The compositions of the present invention are applied in the usual manner, such as pouring, spraying, misting, dusting or fuming.

Implementation example:

The composition of the present invention can be illustrated with the following implementation examples:

Example 1:

Get pyrimethanil 40g, cyanmethanil 10g, sodium dodecylbenzenesulfonate 1.5g, agricultural milk 0203B3g, white carbon black 10g, light calcium carbonate 35.5g, dry respectively, pulverize, then mix, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 9863.61, showing a strong synergistic effect.

Example 2:

Get pyrimethanil 15g, cyanmethanil 30g, sodium dodecylbenzene sulfonate 1.5g, agricultural milk 0203B3g, white carbon black 10g, light calcium carbonate 40.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 530.75, which shows a good synergistic effect.

Example 3:

Get pyrimethanil 42g, procymidone 7g, sodium dodecylbenzenesulfonate 1.5g, agricultural milk 0203B3g, white carbon black 10g, light calcium carbonate 36.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. According to the experiment, the co-toxicity coefficient of the powder is 1010.01, showing an excellent synergistic effect.

Example 4:

Get pyrimethanil 30g, procymidone 15g, sodium dodecylbenzenesulfonate 1.5g, agricultural milk 0203B3g, white carbon black 10g, light calcium carbonate 40.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 1245.69, showing a strong synergistic effect.

Example 5:

Get pyrimethanil 7g, procymidone 42g, sodium dodecylbenzenesulfonate 1.5g, agricultural milk 0203B3g, white carbon black 11g, light calcium carbonate 40.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 702.73, which shows a good synergistic effect.

Embodiment 6:

Get pyrimethanil 25g, thiabendazole 25g, fatty alcohol polyoxyethylene ether sodium sulfate 1.5g, agricultural milk 0203B3g, white carbon black 10g, light calcium carbonate 35.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 686.79, which shows a good synergistic effect.

Embodiment 7:

Get pyrimethanil 40g, thiabendazole 10g, fatty alcohol polyoxyethylene ether sodium sulfate 1.5g, agricultural milk 0203B3g, white carbon black 10g, light calcium carbonate 35.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 378.62, which shows a good synergistic effect.

Embodiment 8:

Get pyrimethanil 10g, thiabendazole 40g, fatty alcohol polyoxyethylene ether sodium sulfate 1.5g, agricultural milk 0203B3g, white carbon black 10g, light calcium carbonate 35.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 205.69, which shows a good synergistic effect.

Embodiment 9:

Get pyrimethanil 30g, Dimethocarb 15g, Sodium Dodecyl Benzene Sulfonate 1.5g, Nongru 0203B3g, White Carbon Black 10g, Light Calcium Carbonate 40.5g, dry respectively, pulverize, mix then, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 463.19, which shows a good synergistic effect.

Example 10:

Get pyrimethanil 40g, diethofencarb 10g, sodium dodecylbenzenesulfonate 1.5g, Nongru 0203B3g, white carbon black 10g, light calcium carbonate 35.5g, dry respectively, pulverize, then mix, superfine pulverize, Then mix, store in a tank, and pack to obtain 100 g of wettable powder. Through experiments, the co-toxicity coefficient of the powder is 1137.38, showing a strong synergistic effect.

Example 11:

Under stirring conditions, add pyrimethanil 20g, procymidone 5g, polyoxyethylene alkylphenol 7g, xanthan gum 0.1g, propylene glycol 5g, lignin sodium carbonate 5g, polyoxyethylene glycol in the reaction kettle successively. 0.5 g of ester and 57.4 g of water were mixed thoroughly, and then ground and mixed several times with colloid mill and sand mill to obtain a suspending agent.

Example 12

Under stirring conditions, add pyrimethanil 20g, cyanamethanil 5g, polyoxyethylene alkylphenol 7g, xanthan gum 0.1g, ethylene glycol 5g, carboxymethyl cellulose 5g, fatty alcohol poly 0.5 g of sodium oxyethylene ether sulfate and 57.4 g of water were mixed thoroughly, and then ground and mixed several times with a colloid mill and a sand mill to obtain a suspending agent.

Example 13

Control effect of tomato gray mold deal with Pre-drug base after the first dose after the second dose Diseased flower rate (%) Diseased flower rate (%) Anti-efficacy (%) Diseased flower rate (%) Anti-efficacy (%) Embodiment 8WP1200 times 15.60 4.74 75.78 5.60 80.67 40% Xerox SC1000 times 24.41 9.54 68.82 9.16 79.77 50% Promethazine WP1000x 24.11 11.56 61.45 16.33 63.5 50% Sukling WP2000 times 20.83 15.50 40.65 20.45 47.08 Shimizu CK 22.12 27.73 41.04

Claims (6)

1, a kind of microbicide compositions of preventing and treating graw mold of tomato, it is characterized in that said composition contains phonetic mould amine, with procymidone or iprodione, or zarilamid, or probenazole, or the mould prestige of second, or anilazine, or dislike mould spirit, also include auxiliary agent and/or filler, phonetic mould amine and procymidone, or iprodione, or zarilamid, or probenazole, or the mould prestige of second, or anilazine, or the ratio of disliking mould spirit is 1 based on the mass fraction of active constituent: 6-6: 1, and the mass fraction that auxiliary agent and/or filler account for composition is 50%-75%, described auxiliary agent or filler are: neopelex, sodium sulfate of polyethenoxy ether of fatty alcohol, the newborn 0203B of farming, the polyoxyethylene glycol ester, polyoxyethylene alkylphenol, lignin sodium carbonate, xanthans, carboxymethyl cellulose, white carbon black, precipitated calcium carbonate, ethylene glycol, wantonly more than three kinds or three kinds in propane diols and the water.

2, composition according to claim 1, the ratio that it is characterized in that phonetic mould amine and procymidone, iprodione, zarilamid, probenazole, the mould prestige of second, anilazine or dislike mould spirit is 1 based on the mass fraction of active constituent: 4-4: 1.

3, the microbicide compositions of control graw mold of tomato according to claim 1, it is characterized in that said composition contains phonetic mould amine, with procymidone or zarilamid or mould prestige of second or probenazole, the ratio of phonetic mould amine and procymidone or zarilamid or mould prestige of second or probenazole is 1 based on the mass fraction of active constituent: 6-6: 1.

4, the microbicide compositions of control graw mold of tomato according to claim 1, it is characterized in that said composition contains phonetic mould amine, with procymidone or zarilamid or mould prestige of second or probenazole, the ratio of phonetic mould amine and procymidone or zarilamid or mould prestige of second or probenazole is 1 based on the mass fraction of active constituent: 4-4: 1.

5, the application of the microbicide compositions of the described control graw mold of tomato of claim 1 is characterized in that this microbicide compositions and auxiliary agent and/or filler are made into wetting powder or suspending agent or soluble powder, are used to prevent and treat graw mold of tomato.

6, the application of the microbicide compositions of the described control graw mold of tomato of claim 1 is characterized in that this microbicide compositions and auxiliary agent and/or filler are made into wetting powder or suspending agent or soluble powder, the gray mold that is used to prevent and treat crop and vegetables.