CN109221148B - Pesticide composition containing fluxapyroxad and propamidine - Google Patents
Pesticide composition containing fluxapyroxad and propamidine Download PDFInfo
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- CN109221148B CN109221148B CN201811133753.4A CN201811133753A CN109221148B CN 109221148 B CN109221148 B CN 109221148B CN 201811133753 A CN201811133753 A CN 201811133753A CN 109221148 B CN109221148 B CN 109221148B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/52—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing groups, e.g. carboxylic acid amidines
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Abstract
The invention discloses a pesticide composition containing effective components of fluxapyroxad and propamidine, which comprises a common auxiliary agent, fluxapyroxad and propamidine, wherein the mass part ratio of the fluxapyroxad to the propamidine is 20:1-1: 20. After the fluxapyroxad and the propamidine are compounded, the compound has obvious synergistic effect, and is suitable for preventing and treating crop diseases caused by pathogenic fungi, in particular to crop gray mold caused by Botrytis (Botrytis) pathogens and crop gibberellic disease caused by Gibberella (Gibberella) pathogens.
Description
Technical Field
The pesticide composition takes fluxapyroxad and propamidine as effective components, and is suitable for preventing and treating crop diseases caused by pathogenic fungi, in particular to crop gray mold caused by Botrtis pathogen and crop gibberellic mold caused by Gibberella pathogen.
Background art:
fluxapyroxad is a new compound developed by BASF corporation to control a broad spectrum of fungal diseases. Fluxapyroxad belongs to carboxamide chemicals and acts in a manner that inhibits succinate dehydrogenase in complex II of the mitochondrial respiratory chain, thereby inhibiting spore germination, germ tube and mycelium growth of the target fungus.
The propamidine is a systemic fungicide, can be absorbed, distributed and metabolized in plants, has protective and therapeutic effects, and is mainly used for preventing and treating gray mold of crops caused by botrytis pathogens.
At present, no report of compounding fluxapyroxad with propamidine is found, and the combination has novelty.
The fluxapyroxad and propamidine are mixed to have synergistic effect on pathogens of the genus Sphaerotheca, the genus Blumeria, the genus Erysiphe, the genus Uncinula, the genus Gibberella, the genus Botrytis, the genus Sclerotiia, the genus Botrytis and the genus Fusarium, and particularly have obvious synergistic effect on Botrytis cinerea and Gibberella zeae in a ratio range of 20:1-1:20, and can be processed into a dosage form commonly used in agriculture by certain technical means.
Disclosure of Invention
The invention aims to provide a synergistic pesticide composition containing fluxapyroxad and propamidine as effective components, and provides an effective management tool for preventing and controlling crop fungal diseases, particularly crop gray mold and head blight.
The invention is realized by the following technical scheme:
the invention relates to a synergistic composition compounded by fluxapyroxad and propamidine, wherein the weight ratio of the fluxapyroxad to the propamidine is 20:1-1: 20.
Furthermore, the total content of the effective components in the synergistic composition is 3-90%.
Furthermore, the synergistic composition is added with an auxiliary agent and an excipient to be prepared into agriculturally commonly used formulations such as a suspending agent, a dispersible oil suspending agent, water dispersible granules, wettable powder and the like by a certain technical means.
Further, the auxiliary ingredients used in the formulation process of the composition include, but are not limited to, solvents, emulsifiers, wetting agents, disintegrants, stabilizers, dispersants, thickeners, penetration enhancers, pH regulators, antifoaming agents, antifreeze agents, carriers and other known substances which are beneficial to the stabilization and efficacy of the active ingredients in the formulation, and are all various ingredients which are commonly used or allowed to be used in pesticide formulations, and the specific ingredients and the dosage are determined by experiments according to the formulation requirements
The suspending agent comprises the following components in percentage by weight: 0.1-40% of fluxapyroxad, 0.1-40% of propamidine, 0.01-17% of dispersing agent, 0.05-17% of wetting agent, 0.01-3% of thickening agent and the balance of deionized water carrier to 100%. The specific production steps are as follows: mixing the effective components with other auxiliary agents, performing high-speed shearing dispersion and sanding in a sand mill, and forming a high-dispersion stable suspension system in a water system medium to prepare the suspending agent with corresponding weight percentage content.
The oil suspending agent comprises the following components in percentage by weight: 0.1-30% of fluxapyroxad, 0.05-30% of propamidine, 0.01-14% of dispersing agent, 0.05-13% of wetting agent, 0.01-3% of thickening agent and the balance of liquid carrier to 100%. The specific production steps are as follows: mixing the effective components with other auxiliary agents, and forming a highly dispersed and stable suspension system in an oil system medium after high-speed shearing dispersion and sand grinding in a sand mill to prepare the oil suspending agent with corresponding weight percentage content.
The water dispersible granule comprises the following components in percentage by weight: 0.1-70% of fluxapyroxad, 0.1-20% of propamidine, 0.05-10% of dispersing agent, 0.1-12% of wetting agent, 0.2-10% of disintegrating agent and the balance of solid carrier to 100%. The specific production steps are as follows: the active ingredients and other auxiliary agents are uniformly mixed, crushed by an ultramicro jet mill, kneaded, and then added into a fluidized bed granulation dryer for granulation, drying and screening to prepare the water dispersible granules with corresponding weight percentage content.
The wettable powder comprises the following components in percentage by weight: 0.1-70% of fluxapyroxad, 0.1-20% of propamidine, 0.1-14% of dispersant, 0.1-12% of wetting agent and the balance of solid carrier to 100%. The specific production steps are as follows: mixing the effective components with other auxiliary agents, mechanically crushing, then carrying out airflow crushing, and uniformly mixing to prepare the wettable powder with corresponding weight percentage content.
The composition is mainly used for preventing and treating gray mold of crops caused by pathogenic substances of Botrys and gibberellic disease of crops caused by pathogenic substances of Gibberella, and the prevention and treatment effect reaches over 80 percent. The composition has long shelf life, high antibacterial effect, low cost, low residue, and safety to human, livestock, and environment.
Compared with the prior art, the synergistic pesticide composition has the beneficial effects that:
1. the compound of the fluxapyroxad and the propamidine has a synergistic effect, and compared with the single agent used alone, the compound obviously improves the effect of preventing and treating diseases;
2. the two effective components of fluxapyroxad and propamidine are compounded, so that the use amount of pesticide is reduced, and the use cost and the pollution to the environment are reduced. And besides being used for preventing and controlling gray mold and gibberellic disease of crops, the bactericidal composition can also be used for preventing and controlling diseases of crops such as cash crops, cereals, melons, fruits, vegetables and the like.
Detailed Description
The present invention is further illustrated by the following examples, it should be understood that the preparation methods described in the examples are only illustrative and not limiting, and that simple modifications of the preparation methods of the present invention based on the idea of the present invention can be considered as falling within the scope of the present invention as claimed in the claims.
First, indoor Activity measurement
According to the Sun Yunpei method, the synergistic effect of the mixed medicaments is evaluated according to the co-toxicity coefficient (CTC), namely the CTC is less than or equal to 80 and is the synergistic antagonistic effect, the CTC is less than 80 and is less than 120 and is the synergistic effect, and the CTC is more than or equal to 120. Measured virulence index (ATI) ═ EC of standard agents50EC of test agent50) X 100; the theoretical virulence index TTI is the virulence index of the A medicament multiplied by the percentage of the A medicament in the mixed preparation plus the virulence index of the B medicament multiplied by the percentage of the B medicament in the mixed preparation; co-toxicity coefficient (CTC) ═ mixed doseDetermination of virulence index (ATI)/theoretical virulence index (TTI)]×100
1. The first embodiment is as follows: indoor toxicity of fluxapyroxad propamidine on Botrytis cinerea (Botrytis cinerea), tomato Botrytis cinerea (Botrytis cinerea) as a pathogen of gray mold of a test object, collected from a field, is measured by the method according to agricultural industry standard NY/T1156.6-2006 of the people's republic of China and a hypha growth rate method.
Table 1: indoor toxicity measurement results of fluxapyroxad propamidine on Botrytis cinerea (Botrytis cinerea).
As shown in Table 1, the fluxapyroxad and the propamidine are mixed in a ratio of 20:1-1:20, so that the fluxapyroxad and the propamidine have obvious synergistic effect on Botrytis cinerea (Botrytis cinerea) and have the co-toxicity coefficient of more than 150.
2. Example two: the indoor toxicity of the fluxapyroxad-propamidine on the Gibberella zeae (Gibberella zeae) is measured, the experimental object is the wheat scab pathogen Gibberella zeae (Gibberella zeae) collected from the field, and the method refers to a growth rate method of agricultural industry standard NY/T1156.6-2006 of the people's republic of China.
Table 2: results of indoor virulence measurement of P.fluxatilide propamidine against Gibberella zeae (Gibberella zeae).
As shown in Table 2, the mixture ratio of fluxapyroxad to propamidine is 20:1-1:20, which has obvious synergistic effect on Gibberella zeae and has the co-toxicity coefficient of more than 150.
Preparation of formulations and control examples
1. Example 140% Fluxapyroxad propamidine suspension.
300 g of fluxapyroxad, 100 g of propamidine, 42 g of lignosulfonate (sodium and calcium), 41 g of calcium dodecyl benzene sulfonate, 50 g of dodecyl betaine, 60 g of fatty alcohol-polyoxyethylene ether, 51 g of glycerol, 1.2 g of Arabic gum and the balance of deionized water to 1000 g, the formula is pre-crushed according to a proportion, the mixture is added into a sand mill for grinding, and the mixture is subjected to high-shear mixing to prepare the 40% fluxapyroxad-propamidine suspending agent.
Example 1 for controlling tomato gray mold: 40 percent of fluxapyroxad-propamidine suspending agent is sprayed by diluting 2000 times by adding water, the control effect is 92.3 percent and 84.7 percent in 7 days and 14 days after the pesticide is applied, 20 percent of fluxapyroxad emulsifiable concentrate is sprayed by diluting 1000 times by adding water, 10 percent of propamidine aqueous solution is sprayed by diluting 500 times by adding water, and the control effect is 81.6 percent, 69.2 percent, 80.5 percent and 70.4 percent in 7 days and 14 days after the pesticide is applied respectively. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the control effect on the tomato gray mold is obviously better than that of a single agent, the dosage of active ingredients in the compounded agent is obviously reduced compared with that when the compounded agent is used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for the tomato gray mold is provided for farmers.
Example 1 for controlling wheat scab: 40 percent of fluxapyroxad-propamidine suspending agent is sprayed by diluting 2000 times by adding water, the control effect is 92.5 percent and 85.6 percent in 7 days and 14 days after the pesticide is applied, 20 percent of fluxapyroxad emulsifiable concentrate is sprayed by diluting 1000 times by adding water, 10 percent of propamidine aqueous solution is sprayed by diluting 500 times by adding water, and the control effect is 79.2 percent, 70.8 percent, 78.8 percent and 62.9 percent in 7 days and 14 days after the pesticide is applied respectively. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the control effect on the wheat scab is obviously better than that of a single agent, the dosage of active ingredients in the compounded agent is obviously reduced compared with that when the compounded agent is used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for the wheat scab is provided for farmers.
2. Example 230% Fluxapyroxad propamidine oil suspension.
200 g of fluxapyroxad, 100 g of propamidine, 49 g of sodium lignosulfonate, 51 g of phenethylphenol polyoxyethylene ether, 205 g of methyl oleate, 79 g of organic bentonite, 80 g of calcium dodecyl sulfonate and the balance of turpentine to 1000 g, the components are crushed in advance according to a proportion, ground in a sand mill, and blended after high shear mixing to prepare the 30 percent fluxapyroxad-propamidine oil suspending agent.
Example 2 for control of grape gray mold: 30% of fluxapyroxad-propamidine oil suspending agent is diluted to 2000 for spraying, the control effect is 93.3% and 84.7% in 7 days and 14 days after the spraying, the control effect is 80.2%, 72.1% and 79.2% and 65.8% in 7 days and 14 days after the spraying, and the control effect is 1000 times of 20% fluxapyroxad emulsifiable concentrate and 700 times of 10% propamidine aqueous solution after the spraying. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the control effect on the grape gray mold is obviously better than that of a single agent, the dosage of active ingredients in the compounded agent is obviously reduced compared with that when the active ingredients are used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for the grape gray mold is provided for farmers.
Example 2 control of barley head blight: 30 percent of fluxapyroxad-propamidine oil suspending agent is diluted by water to 2000 for spraying, the control effect is 91.5 percent and 82.6 percent in 7 days and 14 days after the application, 20 percent of fluxapyroxad emulsifiable solution is sprayed by 1000 times and 10 percent of propamidine aqueous solution is sprayed by 700 times, and the control effect is 82.8 percent, 70.0 percent, 80.6 percent and 61.8 percent in 7 days and 14 days after the application respectively. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the control effect on barley scab is obviously better than that of a single agent, the dosage of active ingredients in the compounded agent is obviously reduced compared with that when the compound agent is used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for barley scab is provided for farmers.
3. Example 3: 60% of fluxapyroxad-propamidine water dispersible granules.
500 g of fluxapyroxad, 100 g of propamidine, 52 g of calcium lignosulfonate, 61 g of carboxylate, 51 g of glucose, 45 g of naphthalenesulfonate and the balance of kaolin to 1000. The formula is prepared into 60% fluxapyroxad-propamidine water dispersible granules by dry grinding, granulating, drying and screening according to a proportion.
Example 3 for controlling celery gray mold: the 60% fluxapyroxad-propamidine water dispersible granule is diluted by water to 3000 and sprayed, the control effect is 92.7% and 83.9% in 7 days and 14 days after the pesticide is applied, 20% fluxapyroxad emulsifiable solution is sprayed by 2000 times, 10% propanamidine water aqua is sprayed by 500 times, and the control effect is 82.2%, 71.5% and 83.1% and 70.8% in 7 days and 14 days after the pesticide is applied respectively. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the control effect on the celery gray mold is obviously better than that of a single agent, the dosage of active ingredients in the compounded agent is obviously reduced compared with that when the compounded agent is used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for the celery gray mold is provided for growers.
Example 3 for controlling rye head blight: the 60% fluxapyroxad-propamidine water dispersible granule is diluted by water and sprayed by 3000 times, the control effect is 93.5% and 83.6% in 7 days and 14 days after the pesticide is applied, the 20% fluxapyroxad emulsifiable solution is sprayed by 2000 times, the 10% propamidine water aqua is sprayed by 500 times, and the control effect is 83.1%, 72.0%, 82.8% and 69.9% in 7 days and 14 days after the pesticide is applied respectively. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the control effect on the rye scab is obviously better than that of a single dose, the dosage of active ingredients in the compound dose is obviously reduced compared with that when the compound dose is used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for the rye scab is provided for farmers.
4. Example 450% Fluxapyroxad propamidine wettable powder.
400 g of fluxapyroxad, 100 g of propamidine, 54 g of calcium lignosulfonate, 42 g of sodium dodecyl sulfate, 51 g of fatty alcohol polyvinyl ether, 51 g of white carbon black and the balance of kaolin to 1000 g. The formula is coarsely ground according to a certain proportion and then is put into a mixer to be mixed evenly, and then the fluxapyroxad-propamidine wettable powder with the concentration of 50 percent is prepared after airflow grinding.
Example 4 for control of strawberry gray mold: the 50% fluxapyroxad-propamidine wettable powder is sprayed by 2000 times, the control effect is 91.7% and 83.3% in 7 days and 14 days after the pesticide is applied, 25% fluxapyroxad emulsifiable concentrate is sprayed by 1000 times, 10% propamidine aqueous solution is sprayed by 400 times, and the control effect is 81.1%, 70.3%, 81.6% and 75.2% in 7 days and 14 days after the pesticide is applied respectively. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the prevention effect on the strawberry gray mold is obviously better than that of a single agent, the dosage of active ingredients in the compounded agent is obviously reduced compared with that when the compounded agent is used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for the strawberry gray mold is provided for farmers.
Example 4 for controlling oat scab: the 50% fluxapyroxad-propamidine wettable powder is diluted by water to 2000 times for spraying, the control effect is 91.0% and 82.0% in 7 days and 14 days after the spraying, 25% fluxapyroxad emulsifiable concentrate is sprayed by 1000 times, 10% propamidine aqueous solution is sprayed by 400 times, and the control effect is 82.6%, 70.6%, 83.0% and 72.2% in 7 days and 14 days after the spraying respectively. After the fluxapyroxad and the propamidine are compounded, the synergistic effect is obvious, the control effect on oat scab is obviously better than that of a single agent, the dosage of active ingredients in the compounded agent is obviously reduced compared with that when the compounded agent is used alone, and the total active ingredients are also relatively reduced, so that the environmental load is reduced, the use cost is reduced, and a more effective management tool for oat scab is provided for farmers.
Claims (5)
1. The pesticide composition is characterized in that the effective components comprise fluxapyroxad and propamidine, wherein the mass ratio of the fluxapyroxad to the propamidine is 20:1-1: 20.
2. The pesticide composition as set forth in claim 1, wherein the active ingredient is present in the pesticide composition in an amount of 3 to 90% by weight.
3. The pesticide composition as set forth in claim 2, wherein the pesticide composition is in the form of any one of a suspension concentrate, a dispersible oil suspension concentrate, a water dispersible granule and a wettable powder.
4. Use of the pesticidal composition according to any one of claims 1 to 3 for controlling crop diseases caused by pathogenic fungi.
5. Use according to claim 4, characterized in that the crop diseases are selected from the group consisting of crop gray mold caused by Botrytis (Botritis) pathogens, crop head mold caused by Gibberella (Gibberella) pathogens.
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