CN110754477A - Composition for preventing and treating citrus fungal diseases and application thereof - Google Patents

Composition for preventing and treating citrus fungal diseases and application thereof Download PDF

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Publication number
CN110754477A
CN110754477A CN201910608468.1A CN201910608468A CN110754477A CN 110754477 A CN110754477 A CN 110754477A CN 201910608468 A CN201910608468 A CN 201910608468A CN 110754477 A CN110754477 A CN 110754477A
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China
Prior art keywords
composition
citrus
captan
sugar alcohol
fungal diseases
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CN201910608468.1A
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Chinese (zh)
Inventor
杨迎青
孙强
兰波
陈洪凡
谢梅琼
王龙江
陈建
胡妍月
李湘民
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Institute Of Plant Protection Jiangxi Academy Of Agricultural Sciences
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Institute Of Plant Protection Jiangxi Academy Of Agricultural Sciences
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Priority to CN201910608468.1A priority Critical patent/CN110754477A/en
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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
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having no bond to a nitrogen atom
    • A01N47/04—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having no bond to a nitrogen atom containing >N—S—C≡(Hal)3 groups
    • 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
    • A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/02—Acyclic compounds
    • 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
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/06—Aluminium; Calcium; Magnesium; Compounds thereof

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention provides a composition for preventing and treating citrus fungal diseases and an application thereof, and relates to the technical field of pesticides. After the captan and the sugar alcohol chelated calcium are compounded, the lasting time of the captan can be effectively prolonged, the application frequency is reduced, and the prevention and treatment effect is stabilized. Overcomes the difference of the control effect of the conventional captan on citrus fungal diseases at different application time.

Description

Composition for preventing and treating citrus fungal diseases and application thereof
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to a composition for preventing and treating citrus fungal diseases and application thereof
Background
Captan, also called kempton, is a trichloromethyl-thionine-based broad-spectrum protective bactericide, has a main protective effect and a certain treatment effect, and has a sale history of nearly 50 years in the world. The captan has wide bactericidal spectrum and various application modes, can be used for preventing and treating various high and low fungal diseases by foliar spray, dressing seeds of potatoes and peanuts, and can also be used for soil treatment (flushing application, root irrigation, soil mixing and broadcasting application and the like) and preventing and treating various crop root diseases. The captan has good control effect on a plurality of diseases of crops such as barley, wheat, oat, rice, corn, cotton, vegetables, fruit trees, melons, tobacco and the like. The captan has the effects of stimulating the growth of plants and preventing and treating rice sheath blight disease, rice blast, wheat straw rust, tobacco leaf brown spot, cotton seedling stage disease, apple rot and the like besides being safe and harmless to crops.
The sugar alcohol chelated calcium is a substance formed by chelating a sugar alcohol substance with a calcium element, the calcium chelating capacity of sugar alcohols is different, the single sugar alcohol has poor chelating capacity relative to EDTA, but the chelating capacity of multiple sugar alcohols after being compounded is stronger than that of EDTA, so the sugar alcohol chelated calcium is formed by combining the compound sugar alcohol with calcium ions in the field. Because the phloem of the crops contains sugar alcohol substances, the elements taking the sugar alcohol as a carrier can be recognized as the sugar alcohol by the phloem of the crops for absorption and transportation, and are not easy to react with organic acid in the bodies of the crops. Relatively speaking, the sugar alcohol chelated calcium can be transported in phloem, and has better mobility, which is the main reason for higher absorption and utilization rate of sugar alcohol calcium. Compared with the conventional EDTA chelated calcium and the like, the sugar alcohol chelated calcium is a safer and more effective calcium supplement because the EDTA is difficult to biodegrade, and can also chelate harmful heavy metal ions in the environment, improve the activity of the heavy metal ions, and cause the heavy metal ions to enter into the biological circulation, thereby further harming the human health. In addition to calcium supplementation, sugar alcohol chelated calcium may also serve the following functions: 1. can supplement calcium rapidly, promote cell division, accelerate metabolism, promote chlorophyll synthesis, and prevent yellowing. 2. Improving the stress resistance of crops such as fruit cracking prevention and the like, repairing damaged leaves and fruits and playing a role in correcting deformed fruits. 3. Beautifying fruit surface, enlarging fruit, improving appearance and taste, and improving crop quality. 4. No hormone, no heavy metal, and long preservation period.
The citrus is a fruit crop which is popular among people, although the consumption demand of people on citrus is increased gradually, and the planting area of citrus is increased. However, the pest and disease damage of the citrus can obviously affect the yield and the quality of the citrus, reduce the commercial economic performance of the citrus and cause great economic loss. The main diseases of the citrus comprise virus and bacterial diseases, fungal diseases and non-invasive diseases, wherein the fungal diseases comprise scab, anthracnose, black spot, resinosis, gummosis, foot rot, damping off, coal disease, gray mold, penicillium and green mold, black stalk rot, black rot and the like, the prevention and control difficulty is high, and the influence on the yield and the quality of the citrus is high.
The existing research shows that the citrus black spot disease can be prevented and controlled by 80% Meidele WDG (80% captan water dispersant), and the citrus black spot disease is sprayed for 1 time in 14 days 6 months after the Shatian pomelo fruit is stabilized, and is sprayed for 1 time every 15 days, and the spraying time is two times. The control effect of 80% MEIDLEG WDG after 800 times dilution can reach 78.4% and 81.3%, and the control effect is due to thiophanate methyl and mancozeb (Xixiujianle MEIDLEG-80% captan WDG control citrus sand skin disease field drug effect test [ J ]. Sichuan agricultural science and technology, 2015 (4): 44-45.). The Huang Zhendong et al researches the control effect of several bactericides on citrus black spot disease, wherein the bactericides are respectively sprayed once in the morning of 4 months 30 days (Xihua 2/3), 5 months 27 days (young fruit period), 6 months 21 days (fruit expansion period) and 7 months 21 days (fruit expansion period), and the bactericides are not used until the fruits are harvested. The results show that the control effect is best (92.53 percent and 90.21 percent) when the 80 percent mancozeb wettable powder is diluted by 600 times, and the control effect is poor (54.72 percent and 48.22 percent) when the 80 percent captan water dispersible granule 800 is used. In a citrus production area in the near-sea city of Zhejiang province, the key period for controlling the citrus black spot disease is to fall before 7 months, which is mainly because typhoon is collected for 8-10 months to influence large precipitation amount and no pesticide spraying control is carried out (Huangyadong, Chengqing, Typha 28241and the like; research on the control of the citrus black spot disease in the near-sea citrus area of Zhejiang [ J ] in southern fruit trees in China, 2017 (3)). It can be seen that different spraying periods of the captan have obvious influence on the control effect of the captan, mainly because the existing captan preparation has short lasting time and limited control coverage time, the control effect of the captan on citrus fungal diseases is unstable.
Disclosure of Invention
The invention provides a lasting composition for preventing and treating the fungal diseases of bacilli, aiming at overcoming the defect that the control effect of the conventional captan preparation on the fungal diseases of oranges is influenced by application time, and the lasting composition is long in lasting time, less in spraying frequency, safe and effective.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a composition for preventing and treating citrus fungal diseases, which comprises the following components in parts by weight: 25-40 parts of captan and 5-18 parts of sugar alcohol chelated calcium.
Preferably, the bactericidal composition comprises 28-35 parts of captan and 9-12 parts of sugar alcohol chelated calcium.
Preferably, the chelating rate of the sugar alcohol chelated calcium is more than 35%.
Preferably, the sugar alcohol chelated calcium has a calcium element content of 150g/L or more.
Preferably, the composition further comprises an adjuvant.
Preferably, the auxiliary materials account for 1-99% of the total mass of the composition.
Preferably, the dosage form of the composition comprises powder, wettable powder, emulsifiable concentrate, granules, aqueous solution or tablets.
The invention also provides application of the composition in the technical scheme in prevention and treatment of citrus fungal diseases.
Preferably, the citrus fungal diseases include citrus black spot disease, citrus scab disease and citrus anthracnose disease.
Preferably, the composition is diluted by 500-1500 times when in use.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a composition for preventing and treating citrus fungal diseases, which comprises 25-40 parts of captan and 5-18 parts of sugar alcohol chelated calcium. After the captan and the sugar alcohol chelated calcium are compounded, the lasting time of the captan can be effectively prolonged, the application frequency is reduced, and the prevention and treatment effect is stabilized. Overcomes the difference of the control effect of the conventional captan on citrus fungal diseases at different application time.
Detailed Description
The invention provides a composition for preventing and treating citrus fungal diseases, which comprises the following components in parts by weight: 25-40 parts of captan and 5-18 parts of sugar alcohol chelated calcium; preferably, the antibacterial agent comprises 28-35 parts of captan and 9-12 parts of sugar alcohol chelated calcium; more preferably, 30 parts of captan and 10 parts of sugar alcohol chelated calcium are included. After the sugar alcohol chelated calcium and the captan are compounded in the proportion limited by the invention, the lasting time can be effectively prolonged, and the influence on the prevention and treatment effect caused by the prevention and treatment opportunity difference can be reduced.
In the present invention, the captan is commercially available or prepared by itself, and the present invention is not particularly limited thereto. Captan mainly provides a control effect on citrus fungal diseases in the composition.
In the present invention, the sugar alcohol chelated calcium may be obtained from commercial sources or prepared by itself. According to the invention, preferably, sugar alcohol chelated calcium with a chelation rate of more than 35% is adopted as a raw material for compounding; more preferably, sugar alcohol chelated calcium with a chelation rate of 35-70% is used as a raw material. In the invention, the content of calcium element in the sugar alcohol chelated calcium is preferably more than 150g/L, and more preferably 150-250 g/L. The sugar alcohol chelated calcium in the composition can enhance the disease resistance of citrus by supplementing calcium on one hand, and can be synergized with captan on the other hand to prolong the effect duration.
In the present invention, the composition includes adjuvants in addition to the captan and the sugar alcohol sequestering agent, including, but not limited to, one or more of fillers, diluents, stabilizers, preservatives, binders, and solvents. The specific selection of the auxiliary materials is not specially limited, and the auxiliary materials can be specifically selected according to the dosage form of the composition. In the invention, the auxiliary materials preferably account for 1-99% of the total mass of the composition, and more preferably 5-80%.
In the present invention, the formulation of the composition includes, but is not limited to, powder, wettable powder, emulsifiable concentrate, granule, aqua or tablet.
In the invention, the captan and the sugar alcohol chelating agent are mixed to obtain the composition, and the composition is prepared according to the conventional technical means when being prepared into different dosage forms.
The invention also provides application of the composition in the technical scheme in prevention and treatment of citrus fungal diseases. Specifically, the citrus fungal diseases include, but are not limited to, citrus black spot disease, citrus scab disease, and citrus anthracnose.
In the invention, the composition is preferably diluted by 500-1500 times and then used, and more preferably 600-1000 times. In the present invention, the diluted solvent includes, but is not limited to, water or ethanol.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
316g of captan raw drug (95 percent by mass of captan) and 100g of sugar alcohol chelated calcium (the calcium content is 180g/L, and the chelation rate is 36.7 percent) are mixed to obtain a mixture; the mixture is mixed with talcum powder and ethanol according to the mass ratio of 1: 7: 2, and then the mixture is dispersed into powder with the particle size of less than 70 mu m, so as to obtain the wettable powder composition.
Example 2
347g of captan raw drug (95 percent by mass of captan) and 120g of sugar alcohol chelated calcium (the calcium content is 180g/L, and the chelation rate is 36.7 percent) are mixed to obtain a mixture; mixing the mixture with talcum powder and ethanol according to the mass ratio of 1: 8: 3, and dispersing into powder with the particle size of less than 70 mu m to obtain the wettable powder composition.
Example 3
295g of captan raw material (95 percent by mass of captan) and 80g of sugar alcohol chelated calcium (the calcium content is 180g/L, and the chelation rate is 36.7 percent) are mixed to obtain a mixture; mixing the mixture with talcum powder and ethanol according to the mass ratio of 1: 6: 3, and dispersing into powder with the particle size of less than 70 mu m to obtain the wettable powder composition.
Example 4
288g of captan raw drug (95 percent by mass of captan) and 100g of sugar alcohol chelated calcium (180 g/L of calcium content and 36.7 percent of chelating rate) are mixed to obtain a mixture; and mixing the mixture with sodium lignosulfonate, polyethylene glycol and light calcium carbonate according to the mass ratio of 1: 7: 2: 25, dispersing into powder, granulating, and drying to obtain the water dispersible granule composition.
Comparative example 1
The same procedure as in example 1 was repeated except that talc was used instead of the sugar alcohol-chelated calcium in example 1, to obtain a control wettable powder.
Example 5
The citrus variety of the test is crystal sugar orange, and 60 citrus fruit trees are randomly selected from the same orchard in Jinhua, Zhejiang, and divided into three groups of 20 citrus fruit trees. Selecting one group of 800-time diluent for spraying the wettable powder composition prepared in the example 1 as a test group; spraying 800 times of diluent of the control wettable powder prepared in the comparative example 1 on the other group to serve as a control group; the rest group was used as a blank control group without any pesticide. The spraying time is spring shoot germination period (3 months 10 days-3 months 15 days), withered flower 2/3(5 months 7 days-5 months 10 days), fruit expansion period (6 months 30 days-7 months 3 days) and fruit maturity period (9 months 1 day-9 months 5 days), disease condition is investigated in 11 months 5 days, and disease condition index and prevention and treatment effect are calculated.
Disease grading criteria are as follows:
grade 0, no scab;
grade 1, the range of disease spots accounts for less than 5% of the whole fruit area, the disease spots are fine and not easy to distinguish and analyze, and the commodity of the fruit is not influenced;
grade 3, the range of the disease spots accounts for 5 to 10 percent of the whole fruit area, the disease spots are easy to distinguish and analyze, and the commodity of the fruit is influenced;
grade 5, the range of disease spots accounts for 11-25% of the whole fruit area, and the disease spots are large, thereby obviously influencing the commodity of the fruit;
grade 7, the range of disease spots accounts for 26-50% of the whole fruit area, and the disease spots are large, which seriously affects the commodity of the fruit;
grade 9, the range of disease spots accounts for more than 50% of the whole fruit area, the disease spots are large and obvious, and the fruit has no commodity.
The prevention and treatment effect is (blank control group disease index-treatment group disease index)/blank control group disease index is multiplied by 100 percent
TABLE 1 prevention and treatment of Citrus black spot disease by the compositions of the present invention
Index of disease condition Controlling effect
Test group 5.07 89.8％
Control group 16.04 67.7％
Blank control group 49.67 -
As can be seen from table 1, the control effect of the composition provided by the invention is significantly improved compared with that of captan which is used for controlling citrus black spot disease independently, namely, the captan and sugar alcohol chelated calcium have a synergistic effect after being compounded, so that the control effect of the composition on citrus fungal diseases can be significantly improved.
Example 6
The citrus variety of the test is crystal sugar orange, 100 citrus fruit trees are randomly selected from the same orchard in Jinhua, Zhejiang, and divided into five groups, and each group comprises 20 citrus fruit trees. Wherein, 1000 times of diluent of the wettable powder composition prepared in the embodiment 1 is sprayed on both groups to be used as a treatment group 1 and a treatment group 2; wherein, the other two groups are sprayed with 1000 times of diluent of the control wettable powder prepared in the comparative example 1 to serve as a control group 1 and a control group 2; the rest group was used as a blank control group without any pesticide.
The spraying time of the treatment group 1 and the control group 1 is spring shoot germination period (3 months, 10 days to 3 months, 15 days), the spraying time of the treatment group 2 and the control group 2 is thank for blossom 2/3(5 months, 7 days to 5 months, 10 days), and no pesticide is sprayed in the rest period. The disease condition is investigated at 11 months and 6, and the disease index and the prevention and treatment effect are calculated.
Disease grading criteria are as follows:
grade 0, no scab;
grade 1, the range of disease spots accounts for less than 5% of the whole fruit area, the disease spots are fine and not easy to distinguish and analyze, and the commodity of the fruit is not influenced;
grade 3, the range of the disease spots accounts for 5 to 10 percent of the whole fruit area, the disease spots are easy to distinguish and analyze, and the commodity of the fruit is influenced;
grade 5, the range of disease spots accounts for 11-25% of the whole fruit area, and the disease spots are large, thereby obviously influencing the commodity of the fruit;
grade 7, the range of disease spots accounts for 26-50% of the whole fruit area, and the disease spots are large, which seriously affects the commodity of the fruit;
grade 9, the range of disease spots accounts for more than 50% of the whole fruit area, the disease spots are large and obvious, and the fruit has no commodity.
The prevention and treatment effect is (blank control group disease index-treatment group disease index)/blank control group disease index is multiplied by 100 percent
TABLE 2 Effect of different application timings on the control of the compositions of the present invention
Index of disease condition Controlling effect
Treatment of group 1 10.68 77.2％
Treatment of 2 groups 11.29 75.9％
Control group 1 27.03 42.3％
Control group 2 21.97 53.1％
Blank control group 46.84 -
As can be seen from table 2, the control effects of the treatment 1 group and the treatment 2 group applied at different timings were not significantly different, while the control effects of the control 1 group and the control 2 group applied at different timings were significantly different. The main reason is that the composition provided by the invention has longer lasting time compared with the single captan, and has better prevention and treatment effect. Therefore, the composition provided by the invention can reduce the influence of application time on the control effect of citrus fungal diseases, thereby providing more stable control effect.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The composition for preventing and treating citrus fungal diseases is characterized by comprising the following components in parts by weight: 25-40 parts of captan and 5-18 parts of sugar alcohol chelated calcium.
2. The composition of claim 1, comprising 28 to 35 parts of captan and 9 to 12 parts of sugar alcohol chelated calcium.
3. The composition according to claim 1, wherein the sugar alcohol has a calcium chelate rate of 35% or more.
4. The composition according to claim 1 or 3, wherein the sugar alcohol-chelated calcium has a calcium element content of 150g/L or more.
5. The composition of claim 1, wherein the composition further comprises an adjuvant.
6. The composition according to claim 5, wherein the auxiliary material accounts for 1-99% of the total mass of the composition.
7. The composition of claim 1, 5 or 6, wherein the composition is in the form of a powder, wettable powder, cream, granule, aqueous solution or tablet.
8. Use of the composition according to any one of claims 1 to 7 for controlling citrus fungal diseases.
9. The use according to claim 8, wherein the citrus fungal diseases include citrus black spot, citrus scab and citrus anthracnose.
10. Use according to claim 8 or 9, wherein the composition is used after dilution 500 to 1500 times at the time of use.
CN201910608468.1A 2019-07-08 2019-07-08 Composition for preventing and treating citrus fungal diseases and application thereof Pending CN110754477A (en)

Priority Applications (1)

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CN201910608468.1A CN110754477A (en) 2019-07-08 2019-07-08 Composition for preventing and treating citrus fungal diseases and application thereof

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Application Number Priority Date Filing Date Title
CN201910608468.1A CN110754477A (en) 2019-07-08 2019-07-08 Composition for preventing and treating citrus fungal diseases and application thereof

Publications (1)

Publication Number Publication Date
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