CN114223665B - Use of bactericidal composition for preventing and controlling plant pathogenic fungi - Google Patents

Use of bactericidal composition for preventing and controlling plant pathogenic fungi Download PDF

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CN114223665B
CN114223665B CN202111655518.5A CN202111655518A CN114223665B CN 114223665 B CN114223665 B CN 114223665B CN 202111655518 A CN202111655518 A CN 202111655518A CN 114223665 B CN114223665 B CN 114223665B
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diseases
plant
plants
fusarium
caused
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CN114223665A (en
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罗昌炎
詹姆斯.T.布里斯托
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Jiangsu Rotam Chemical Co Ltd
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Jiangsu Rotam Chemical Co Ltd
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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
    • A01N47/08—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 one or more single bonds to nitrogen atoms
    • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
    • A01N47/18—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, directly attached to a heterocyclic or cycloaliphatic ring
    • 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
    • A01N43/50—1,3-Diazoles; Hydrogenated 1,3-diazoles

Abstract

The invention relates to the use of a fungicidal composition for controlling phytopathogenic fungi, in particular to a method for protecting plants or seeds from attack by humic, fusarium, alternaria, cladosporium, plasmodiophora radicis and soft rot fungi. The use of a bactericidal composition for preventing and controlling pythium, fusarium, alternaria, cladosporium cucumerinum, plasmodiophora radicis and soft rot fungi, wherein the bactericidal composition comprises active compounds of tetrazolium picolinate and cyazofamid, and the weight ratio of the tetrazolium picolinate to the cyazofamid is 10:1-1:10. The use of a fungicidal composition for controlling phytopathogenic fungi, with a reduced total amount of active compounds applied, for reducing the application rate and improving the activity spectrum of the known compounds tetrazolium picolinate and cyazofamid, provides an improved activity, synergistic effect on the phytopathogenic fungi with a reduced total amount of active compounds applied.

Description

Use of bactericidal composition for preventing and controlling plant pathogenic fungi
The application is a divisional application with the application number of 201910381344.4, the application date of 2019, 05 month and 08, and the name of the divisional application of 'a bactericidal composition'.
Technical Field
The invention relates to a sterilization composition, in particular to a method for protecting plants or seeds from being invaded by humic acid, fusarium, alternaria, cladosporium cucumerinum, plasmodiophora radicis and soft rot fungi by using the sterilization composition.
Background
One of the key problems in research conducted in this field of technology with respect to pesticidal activity, especially with respect to crop protection, is improving properties, especially in terms of biological activity, and maintaining properties in terms of this activity over a period of time.
Tetrazolium picolinate, test code NF-171; CAS:500207-04-5; the chemical formula is [6- [ [ [ [ (z) - (1-methyl-1H-tetrazol-5-yl) (phenyl) methylene ] amino ] oxy ] methyl ] pyridin-2-yl ] carbamic acid tert-butyl ester; the molecular structural formula is:
tetrazolium picolinate is an oxime ether bactericide developed by the company Cauda in Japan, and has good control effect on downy mildew and epidemic disease. Tetrazolium picolinate is known from cn02817805. X.
Because of the increasing environmental and economic demands now on bactericides, such as the demands on the activity spectrum, toxicity, selectivity, application rate, residue composition and favourable manufacturing possibilities, and also because of possible problems, for example, with regard to resistance, it is a continuous task to develop new bactericides which in some respects are superior to the existing bactericides.
Disclosure of Invention
The object of the present invention is to provide a fungicidal composition for controlling phytopathogenic fungi, which has an improved activity (synergy) against phytopathogenic fungi at a reduced total amount of active compound application, in terms of a reduced application rate and an improved activity profile of the known compounds tetrazolium picolinate and cyazofamid.
We have found that simultaneous, i.e. combined or separate, administration of tetrazolium picolinate and cyazofamid, or sequential administration of tetrazolium picolinate and cyazofamid, results in better control of harmful plant pathogenic bacteria than the individual compounds administered alone; in particular to the prevention and treatment of plant pathogenic bacteria such as Pythium, fusarium, alternaria, black star, plasmodiophora, soft rot fungi and the like.
The invention provides an application of a bactericidal composition for preventing and controlling plant pathogenic fungi, which is characterized in that the composition is prepared by binary compounding of tetrazolium picolinate and cyazofamid, so that the obtained composition has a gain effect on the prevention and control effect, expands a bactericidal spectrum, plays a role of one medicine for multiple purposes, and effectively slows down or avoids the generation of drug resistance of pathogenic bacteria. Surprisingly, the bactericidal activity of the bactericidal composition of the invention is significantly higher than the sum of the activities of the individual active compounds. In other words, there is an unpredictable, truly existing synergistic effect, not just an augmentation of activity.
The synergistic effect is particularly pronounced when the active compounds are present in the fungicidal compositions according to the invention in particular weight ratios. However, the weight ratio of the active compounds in the fungicidal composition of the present invention may vary within a certain range.
The invention relates to a use of a bactericidal composition for preventing and controlling plant pathogenic fungi, which is realized by adopting the following technical scheme:
a bactericidal composition characterized in that: the composition contains active ingredients of tetrazolium picolinate and cyazofamid, wherein the weight percentage of the tetrazolium picolinate to the cyazofamid is 10:1-1:10, preferably 5:1-1:5, more preferably 3:1-1:3, and even more preferably 1:1.
The weight ratio of tetrazolium picolinate to cyazofamid in the present invention may also be, for example, 10:1, 9:1, 8:1, 7:1, 6:1, 5:1, 4:1, 3:1, 2:1, 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9, 1:10.
The bactericidal composition also comprises a filler and/or a surfactant.
A method for controlling plant pathogenic bacteria comprises applying a bactericidal composition to pathogenic bacteria and/or their environment, or to plants, plant parts, seeds, soil, areas, materials or spaces.
A method for controlling plant pathogenic bacteria comprises applying tetrazolium picolinate and cyazofamid simultaneously, or separately, or sequentially.
A bactericidal composition contains tetrazolium picolinate and cyazofamid, and filler and/or surfactant.
The bactericidal composition can be prepared into any agriculturally acceptable formulation. The sterilization composition is prepared from suspending agents, seed coating agents, suspending emulsion agents, wettable powder, water dispersible granules, microcapsule suspending agents, coating granules, extrusion granules, emulsifiable concentrates, microemulsions, aqueous emulsion, effervescent tablets and ultra-low volume liquid agents.
The bactericidal composition is used for preventing and controlling fungi on grains, fruits and vegetables.
The bactericidal composition is used for preventing and controlling grains, fruits and vegetables from being infected with saprophytic fungi, fusarium, alternaria alternata, cladosporium cucumerinum and soft rot fungi.
The bactericidal composition is used for protecting plant propagation materials and plant organs growing later from being invaded by saprophytes, fusarium, alternaria, cladosporium cucumerinum, plasmodiophora radiata and soft rot fungi.
Use of the fungicidal composition for controlling soil pathogenic or saprophytic fungi applied to a locus where control is desired.
The fungicidal compositions are particularly important in controlling a large number of fungi in a variety of crop plants such as rape, tomato, chinese cabbage, banana, cotton, vegetable varieties (e.g. cucumber, beans, tomato and cucurbitaceae), barley, grasses, oat, coffee, potato, maize, apple, pear, rice, rye, soybean, grape vine, wheat, ornamental plants, sugarcane and a large number of seeds.
A method of controlling the infestation of plants, plant parts, plant propagation material and subsequently growing plant organs by phytopathogenic fungi of the species pythium, fusarium, alternaria, cladosporium cucumerinum, soft rot fungi, comprising applying the fungicidal composition of the invention to the plants, plant parts, plant propagation material or the soil or cultivation medium in which the plants are growing or in which growth is desired, in an agronomically effective and substantially non-phytotoxic application amount by seed treatment, foliar application, stem application, soaking, instillation, casting, spraying, powdering, scattering or fuming or the like.
The invention provides a bactericidal composition which has higher activity and longer activity retention. The bactericidal composition has lower dosage and lower toxicity, and can be used for preventing and controlling plants, seeds and soil with fungus diseases of humic acid bacteria, fusarium, alternaria alternata, cladosporium cucumerinum, plasmodiophora radicis and soft rot fungi.
Detailed Description
The bactericidal composition has strong activity on various plant pathogenic bacteria and can exert strong control effect on preventing and treating plant diseases caused by the plant pathogenic bacteria. The fungicidal composition of the present invention has excellent activity against a wide range of plant pathogenic fungi such as the group of the clubfoot, oomycetes, pot, zygomycetes, ascomycetes, basidiomycetes, semiknown fungi, etc.
The fungicidal compositions of the present invention can be used as foliar fungicides in crop protection, as well as fungicides for seed dressing and as soil fungicides.
The fungicidal composition of the present invention is particularly suitable for controlling the following phytopathogens:
cross-wire monocysteina diseases (podosphaeradseas), for example caused by white cross-wire monocysteina (podosphaeraleuocutrichia);
monofilament shell diseases (sphaerotheca diseases), for example caused by the sphaerotheca fuliginea;
leptospirosis (uncinulatiseas), for example caused by grape fishing line shells (uncinulanecators);
rust, for example: gummy rust (gyrnosporaginumdiseases), for example caused by gyrnosporaginumsabinae;
camelliasis (heilieadiseases), for example caused by camellias coffee (heilieavastatrix);
phakopsora disease (phakopsoroadaiseas), for example caused by phakopsora pachyrhizi (phakopsoromeribome);
pucciadadses, caused, for example, by Pucciniatrichlrabi (Pucciniaarcondite), pucciniazium (Pucciniaagramine) or Pucciniatrichlida (Pucciniatrichlida);
monomonas diseases (Uromyces diseases), for example caused by Uromyces verrucosa (Uromyces appendicum);
oomycetes (oomyceteedises), for example:
white rust (albugo diseases), for example caused by white rust bacteria (albugo candida);
bremia diseases (Bremia diseases), for example caused by Bremia lactucae (Bremia lactucae);
powdery mildew (powderymilde), for example: wheat powdery mildew (blumeriadiiseas), for example caused by wheat powdery mildew (blumeriagramine);
downy mildew (peronospora diseases), for example caused by peronospora pisi (Peronosporapisi) and peronospora brassicae (peronosporabrasica);
phytophthora diseases (phytophthora), for example caused by phytophthora infestans;
plasmopara diseases (Plasmopara), for example caused by Plasmopara viticola (Plasmopara viticola);
pseudoperonospora (pseudoperonospora dis), for example caused by pseudoperonospora humulosa (Pseudoperonosporahumuli) or pseudoperonospora cubensis (pseudoperonospora cubensis);
pythumdiseas (Pythumdiseas), for example, caused by Pythummultimum;
branched sporosis (Alternariadiiseas), caused for example by Alternariolaani;
cercospora disease (cercospora diseases), for example, caused by cercospora betana (cercospora beticola);
chrysosporium disease (Cladiosporum diseases), for example caused by Cladiosporium cucumerinum;
aschersonia (cochliobolus diseases), caused, for example, by aschersonia (cochliobolus) or aschersonia (cochliobolus);
the genus colletotrichum diseases (Colletotrichumdiseases), for example, caused by colletotrichum (colletotrichum lindemux) or the like;
olive Kong Qiaoban diseases (cycloniumdiseases), for example caused by olive Kong Qiaoban bacteria (cycloniumagaginum);
putrescence (diaporthe diseases), for example caused by citrus fruit-to-fruit seat shells (diaporthe cirri);
elsinoe disease (Elsinoediseases), for example caused by Elsinoe ampelina (Elsinoe ampattii);
longosporium disease (gloeosporium diseases), for example caused by alternaria yue (gloeosporium laetisolor);
confucius diseases (Glomerella diseases), for example, caused by periclase (Glomerella cingulata);
ball bed mycoses (guillaiadiases), for example caused by the fungus guillaiadiabindwelli;
globus diseases (leptosphaeriadaiseas), for example by leptosphaeriamaceus (leptosphaeriamaceus) of the family cruciferae; leptosphaeria nodorum (Leptosphaeria nodorum);
rice blast (Magnaporthe diseases), for example caused by Magnaporthe grisea (Magnaporthe grisea);
coccidioidomycosis (mycosphaerella diseases), for example by mycosphaerella gramineicola; alternaria alternata (Mycosphaerella radicata); caused by the banana black stripe leaf spot bacteria (mycosphaerella fijiensis);
septoria diseases (Phaeosphaeriadaiseas), caused, for example, by septoria nodorum (Phaeosphaeriodicum);
pyrenodophoraleases (pyrenocardosis), for example caused by pyrenodorum (pyrenodorrates) or pyrenodorum (pyrenodorricirentis);
corallosis (rynchosporium diseases), for example caused by ryegrass (rynchosporium secalis);
septoria diseases (septoria diseases), caused for example by aschersonia apiacea (septoria apii) and aschersonia lycopersicum (septoria lycopersici);
ramaria disease (Typhuladseae), for example caused by Ramaria sarcospori (Typhulaincarta);
scab (venturia diseases), for example caused by apple scab (venturia inaeqlis);
root, sheath and stem diseases, for example:
fungiopathy (Corticium diseases), for example caused by Gramineae (Corticiummgramiearum);
fusarium diseases (Fusarium diseases), for example caused by Fusarium oxysporum;
sturgeon diseases (gaeumannomyces diseases), for example caused by the apotheca gramineae (gaeumannomyces);
rhizoctonia diseases (Rhizoctoniadiniseas), caused, for example, by Rhizoctonia solani (Rhizoctonia solani);
branch mold (sarocladium diseases), for example by the species Cladosporium oryzae (Sarocladium moryzae);
sclerotium diseases (sclerotiniumdiseases), for example caused by sclerotium oryzae (sclerotium oryzae);
rhizopus disease (Thielaviopsis diseases), for example caused by Rhizopus (Thielaviopsis basicola);
ear and panicle diseases, including corn cobs, for example:
alternaria disease (alternariadiiseas), for example caused by alternaria (alternariaspp);
aspergillosis (Aspergillus diseases), caused for example by Aspergillus flavus;
cladosporium diseases, for example caused by Cladosporium cladosporioides;
ergot diseases (Clavicepsidies), for example caused by Claviceppurpore;
fusarium diseases (Fusarium diseases), for example caused by Fusarium culmorum;
gibberella diseases (gibberella diseases), for example caused by gibberella zeae;
rice leaf curl (Monographella), for example caused by rice leaf curl (monographellovitis);
smut and stinking smut, for example: ustilago (Sphacelotetcadis), for example, caused by Ustilago (Sphacelotescheeilia);
tilletiadinia diseases (Tilletiadinises), for example caused by Tilletiadinia reticulata (Tilletiacumies);
urocystis diseases (Urocystis diseases), for example caused by Urocystis nikoense (Urocystis);
ustilagogoeas, for example caused by Ustilagomorpha nudiflora (Ustilagogonuda);
fruit rot and mycosis, for example:
aspergillosis (Aspergillus diseases), caused for example by Aspergillus flavus;
botrytis diseases (botrytis diseases), for example caused by botrytis cinerea;
penicillium diseases (Penicillium diseases), caused, for example, by Penicillium expansum and Penicillium purpurogenum;
sclerotinia diseases (sclerotinia diseases), for example caused by sclerotinia sclerotiorum (sclerotinia sclerotiorum);
verticillium diseases (Verticillium diseases), for example, caused by Verticillium black and white (Verticillium).
Seed and soil borne rot, mold, wilt, rot and damping off:
alternaria disease (Alternaria adaiseas), for example caused by Alternaria sinica (Alternaria amabilis);
myceliophthora (aphanomyces diseases), for example caused by myces pisiformis (aphanomyces euteiches);
ascochytadiseases, for example caused by ascochytalis;
aspergillosis (Aspergillus diseases), caused for example by Aspergillus flavus;
cladosporium diseases (Cladosporium diseases), caused, for example, by Cladosporium polymorphum;
aschersonia (cochlioboluses diseases), for example caused by aschersonia graminea (cochlioboluses sativus) (Conidiform: drechslera, bipolaris syn: helminthosporium);
the genus colletotrichum diseases (Colletotrichumdiseases), for example, caused by colletotrichum lycopersicum (colletotrichum cocodes);
fusarium diseases (Fusarium diseases), for example caused by Fusarium culmorum;
gibberella diseases (gibberella diseases), for example caused by gibberella zeae;
globispersiosis (macrophoromidaseas), for example caused by the legume globispora (macrophoromiapseina);
fusarium diseases (Microdociumdisease), for example caused by Fusarium poae (microdochium nivale);
snow mold (monographella diseases), for example caused by wheat snow mold (monographella ivalis);
penicillium diseases (Penicillium diseases), caused, for example, by Penicillium expansum;
phoma diseases (phomadiseas), for example caused by phoma nigrum (phoma nigrum);
erwinia diseases (Erutima), such as soft rot of vegetables caused by erwinia carotovora (e.carafavora);
phomopsis (phomopsis diseases), for example caused by phomopsis sojae;
phytophthora diseases (Phytophthora), for example caused by Phytophthora (Phytophthora).
Nuclear cavity diseases (pyrenophordeises), for example caused by pyrenophorous bacteria (pyrenophoraminea);
pyricularia diseases (Pyricularia diseases), for example caused by Pyricularia oryzae (Pyricularia oryzae);
pythumdiseas (Pythumdiseas), for example, caused by Pythummultimum;
rhizoctonia diseases (Rhizoctoniadiniseas), caused, for example, by Rhizoctonia solani (Rhizoctonia solani);
rhizopus diseases (rhizopus), such as seedling blight (rhizopus), strawberry soft rot (rhizopus), lily soft rot (rhizopus), and the like;
sclerotinia sclerotiorum diseases (sclerotinia sclerotiorum diseases), for example caused by sclerotinia sclerotiorum (seletiumrolfsii);
septoria diseases (septoria diseases), for example caused by septoria nodorum (septoria nodorum);
ramaria disease (Typhuladseae), for example caused by Ramaria sarcospori (Typhulaincarta);
verticillium diseases (Verticillium diseases), for example caused by Verticillium dahliae (Verticillium dahliae);
ulcers (Canker), pine (broom) and blight of tip, for example:
confucius diseases (Nectriadseas), for example caused by Nectriagalia (Nectriagaligena) of dry cancer;
wilt disease, for example:
streptococcal disease (monilinia diseases), for example caused by monilinia fructicola (monilinia axa);
blistering or leaf shrinking, including deformation of flowers and fruits, for example:
exobasidiomycetes diseases (exobasidium diseases), caused, for example, by spoilage exobasidiomycetes (exobasidium vexans);
exocyst diseases (taphrinodiseas), for example, caused by exocyst deformity (taphrinodeforms);
diseases of flowers and seeds, for example:
botrytis diseases (botrytis diseases), for example caused by botrytis cinerea;
rhizome diseases, for example:
rhizoctonia diseases (Rhizoctoniadiniseas), caused, for example, by Rhizoctonia solani (Rhizoctonia solani);
helminthiosporium diseases (helminthiosporium diseases), for example caused by eggplant disease helminthiosporium solani (helminthiosporium solani);
clubroot, for example: clubroot (plasmodiophoriseas), for example, is caused by plasmodiophora brassicae (plasmodiophorbraassocae).
The fungicidal composition of the present invention is effective especially against seed diseases caused by the following and the like or diseases at the early stage of growth of various plants: aspergillus (aspergillus spp.), penicillium (penicillium spp.), fusarium (fusarium spp.), gibberella (gibberella spp.), trichoderma (tricodermaspp.), rhizopus (thielaviopsisppp), rhizopus (rhizopus spp.), mucor (mukorspp.), volcanium (corctimspp), phoma (rhoaspp.), rhizopus (rhizoctonia spp.), rhizoctonia (rhizoctonia spp.), and dichotoma (dipsign).
The fungicidal compositions of the present invention may also be used to prevent or control a variety of pathogenic or saprophytic fungi in soil or cultivation media. Examples of soil-borne fungal pathogens include alternaria (alternariaspp), aschersonia (ascochytaspp), botrytis cinerea (botrytis cinerea, cercospora (cercospora spp), ergot (claviceppurpore), trichlella graminearum (cocholosotivus), trichlrabilis (collettrichlyspp), epicoccum (epicoccum mspp), fusarium graminearum (fusarium graminearum), fusarium venenatum (fusarium venenatum), fusarium oxysporum (fusarium moniforme), fusarium oxysporum (fusarium propranum), fusarium solani (fusarium soyabean), fusarium venenatum (fusarium soyabean), vinylgum (glaucum), helminthicum (helminthicporum), microzyme (microzyme) of the genus penicillium (pencillump), phoma (phomopsis), sclerotinia (pyrenophorsf.) of the genus pyriform (pyricularia oryzae), rhizoctonia solani (rhizoctonia solani), rhizoctonia cerealis (rhizoctonia cerealis), sclerotium (sclerotinia spp), septoria (septoria spp), septoria (sphaceticaspp), septoria (sphacerba spp), cercospora (tilletiaspp), sarcomyces (typhulaca) of the genus cryptomelane (uromyces sp), septoria (uromyces stigmata), melanomyces (ustilaria spp) or verticillium.
The soil bacteria include rhizoctonia, fusarium, phytophthora, cataplexy, root rot, saprotic mold, gray mold, soft rot and the like. Under the general condition, the soil pathogens can generate a large amount of thalli, so long as conditions are favorable for the growth and development of pathogens and hosts are infected, the pathogens can be propagated in a large amount and can infect the hosts, under the existence of the infected hosts, the pathogens can enter a continuous pathogenic period, and the pathogens are propagated and diffused in a large amount along with the continuous cropping of crops, but after that, nutrients are consumed or the soil conditions such as temperature, humidity and the like are unfavorable for the pathogens, and the pathogens can enter a dormant period. When the disease-sensitive host is not present, soil-borne pathogens can survive in soil, and besides the wide host range of the soil pathogens, the soil-borne pathogens can survive on the root surface or the stump fallen leaves of non-hosts, and the soil-borne pathogens have no saprophytic competition capability. However, different pathogens are different, like Fusarium species can survive almost indefinitely in the soil.
Crops treated with the fungicidal compositions of the present invention are, for example, but not limited to, cereals, vegetables, alfalfa, soybean, turf, wood, trees, fruit trees or horticultural plants.
The crops include primarily field crops, such as corn, soybean, cotton, canola seeds, such as brassica napus (brassica) for example, turnip (brassica napus), mustard (b.juncea) for example, mustard (mustard) and russian mustard (brassica carinata), rice, wheat, beet, sugarcane, oat, brown wheat, barley, millet, flax, grape vine and fruit or vegetable crops of various plant categories, such as rosaceae (rosacea) for example, kernel fruits such as apples and pears, as well as stone fruits such as apricots, cherries, almonds and peaches, berries such as strawberries, teas for example, juglandaceae (beautyrate), juglandaceae (juglandaceae), juglandaceae (beatussaceae), anacardiaceae (anaceae), fagaceae (Rutaceae), ruaceae (ruaceae), and ruaceae (ruaceae), ruaceae, for example, candelas, and jet (ruaceae), candelas, for example. Solanaceae (solanaceae.) (e.g., tomato, potato, pepper, eggplant), liliaceae (liliaceae sp.), compositae (completions sp.) such as lettuce, artichoke and chicory-including root chicory (rootchicory), endive (endive) or chicory (common), umbelliferaespresse (such as carrot, parsley, celery and tuberous celery), curbitaceae (curcurbitaceae) such as cucumber-including pickled cucumber (picklingcuber), pumpkin, watermelon, calabash and melon), alliaceae (alliaceae) such as onion and leek, and the like cruciferae (e.g. white cabbage, red cabbage, broccoli, cauliflower, brussels sprouts, green vegetables, broccoli, radishes, horseradish, cole, chinese cabbage), legume (leguminosae) such as peanut, pea and lentil such as cranberry and broad bean, chenopodiaceae (chenopodiaceae) such as fodder beet, spinach sweet (spinachbeet), spinach, beetroot, malvaceae (Malvaceae) such as okra, asparagiceae (Asparagaceae) such as asparagus; horticultural crops and forest crops; ornamental plants; and genetically modified homologs of these crops.
The bactericidal composition is particularly suitable for preventing and treating apple scab, pear scab, beet brown spot, cruciferous vegetable clubroot, vegetable soft rot, tomato root rot, corn stem rot, rice damping off, tomato early blight and the like.
The use of the fungicidal compositions of the present invention for protecting plants, plant parts, plant propagation material and subsequently growing plant organs from attack by phytopathogenic fungi; in particular to the use of the composition for preventing the invasion of fungus such as saprophytic fungi, fusarium, alternaria alternata, plasmodiophora radicis and soft rot fungi.
It is another object of the present invention to provide a method for controlling the protection of plants, plant parts, plant propagation material and subsequently growing plant organs from phytopathogenic fungi, in particular from the fungi of the group consisting of pythium, fusarium, alternaria, arisaema, plasmodium, soft rot fungi, which comprises applying the fungicidal composition according to the invention to the plants, plant parts, plant propagation material or the soil or cultivation medium in which the plants are growing or in which growth is desired, in an agronomically effective and substantially non-phytotoxic application amount by seed treatment, foliar application, stem application, soaking, instillation, pouring, spraying, dusting, spreading or fuming.
The fungicidal composition of the present invention can treat all plants and plant parts. "plant" refers to all plants and plant populations such as desirable and undesirable wild plants, cultivated plants and plant varieties (whether protected by plant varieties or plant growing rights). The cultivated plants and plant varieties may be plants obtained by conventional propagation and cultivation methods, which may be supplemented or supplemented with one or more biotechnological methods, for example using doubled haploids, protoplast fusion, random and directed mutations, molecular or genetic markers, or using bioengineering and genetic engineering methods. Plant parts refer to all above and below ground parts and organs of plants, such as shoots, leaves, flowers and roots, such as leaves, needles, stems, branches, flowers, fruit bodies, fruits and seeds as well as roots, bulbs and rhizomes. Crops as well as vegetative propagation and propagation material, for example cuttings, bulbs, rhizomes, fibrins and seeds, also belong to the plant part.
The term "plant propagation material" is understood to mean all plant parts, such as seeds, which are capable of reproductive capacity and which can be used for reproducing the latter, as well as plant materials such as cuttings or tubers (e.g. potatoes). Thus, plant parts as used herein include plant propagation material. Mention may be made, for example, of seeds, roots, fruits, tubers, bulbs, rhizomes and plant parts. Germinated plants to be germinated from soil or suppressed after emergence of seedlings, and effective plants. Young plants may be protected by impregnation, either entirely or partially, prior to implantation.
Plant parts and subsequently grown plant organs are any parts of plants produced from plant propagation material, such as seeds. Plant parts, plant organs and plants may also benefit from pathogenic damage protection obtained by applying the fungicidal composition to plant propagation material. Plant parts and plant organs that grow after certain sites can also be considered plant propagation material, which itself can be applied (or treated) with the fungicidal composition; plants, other plant parts and other plant organs produced from the treated plant parts and treated plant organs can thus also benefit from the application of the fungicidal composition.
The preferred propagation material of the invention is a seed. Examples of the method for treating the seed include a method of immersing the seed in a liquid state solution by diluting a liquid or solid chemical or directly immersing the seed in a liquid state solution without dilution, a method of mixing the solid chemical or liquid chemical with the seed, a method of coating the seed with a chemical, and a method of spraying the seed with a chemical while planting.
The cultivation medium of the invention refers to a support body capable of rooting and growing crops, for example: soil, water, etc., concrete raw materials may be, for example, sand, pumice, vermiculite, diatomaceous earth, agar, gel-like substance, polymer substance, asbestos, wood chips, bark, etc. The preferred cultivation medium is soil.
Examples of the method of applying the chemical to the soil include a method of diluting a liquid chemical in water or directly applying the chemical to roots of plants or to a seedling bed for raising seedlings without diluting, a method of dispersing a granule in roots of plants or in a seedling bed for raising seedlings, a method of spraying a powder, water dispersible granule or the like to the soil before sowing and mixing the granule with the soil as a whole, a method of spraying a powder, water dispersible granule after diluting the powder or water dispersible granule before sowing or before planting plants in planting holes or planting furrows, and a method of sowing the granule.
The invention provides a method for preventing and treating plant pathogenic bacteria, in particular to a method for preventing and treating plant pathogenic bacteria such as humic acid bacteria, fusarium, alternaria alternata, cladosporium cucumerinum, plasmodiophora radicis, soft rot fungi and the like, which can be used for treating, preventing or eradicating.
The tetrazolium picolinate of the present invention is combined/co-administered with cyazofamid. Comprising the separate, sequential or simultaneous administration of tetrazole picoline and cyazofamid. Preferably, the combination of tetrazole picoline and cyazofamid is in the form of a composition comprising tetrazole picoline and cyazofamid.
The compositions of the present invention may be formulated primarily in that the materials of the composition have been mixed, the ingredients of the composition may also be provided in a single dose, mixed in a tank or canister prior to use, and then diluted to the desired concentration. Wherein the preparation form provided by the invention is preferred as the main.
As a further improvement of the present invention, the bactericidal composition of the present invention can be formulated into any agriculturally acceptable dosage form.
As a further improvement of the invention, the sterilization composition is in the forms of suspending agents, seed coating agents, wettable powder, water dispersible granules, microcapsule suspending agents, coating granules, extrusion granules, emulsifiable concentrates, microemulsions, aqueous emulsions, effervescent tablets, ultra-low volume liquid agents and suspoemulsions.
The bactericidal composition comprises tetrazolium picolinate, cyazofamid, a filler and/or a surfactant.
According to the present invention, the term "filler" refers to a natural or synthetic organic or inorganic compound that can be combined or associated with an active compound to make it easier to apply to a subject (e.g., plants, crops or grasses). Thus, the filler is preferably inert, at least should be agriculturally acceptable. The filler may be solid or liquid.
The inert medium which can be used in the present invention may be either solid or liquid, and examples of solid medium materials include: plant powder (such as soybean powder, starch, grain powder, wood powder, bark powder, sawdust, walnut shell powder, bran, cellulose powder, coconut shell, corn cob and tobacco stem particles, residues after extraction of plant essence, etc.), paper, sawdust, synthetic polymers of pulverized synthetic resin, clays (such as kaolin, bentonite, acidic porcelain clay, etc.), talc, etc. Silica (e.g., diatomaceous earth, silica sand, mica, hydrous silicic acid, calcium silicate), activated carbon, natural minerals (pumice, attapulgite, zeolite, etc.), burned diatomaceous earth, sand, plastic media, etc. (e.g., polyethylene, polypropylene, polyvinylidene chloride, etc.), inorganic mineral powders of potassium chloride, calcium carbonate, calcium phosphate, etc., chemical fertilizers such as ammonium sulfate, ammonium phosphate, urea, ammonium chloride, etc., and earth fertilizers, which may be used alone or in combination of 2 or more.
As the liquid vehicle material, water, alcohols (e.g., methanol, ethanol, isopropanol, butanol, ethylene glycol, etc.), ketones (e.g., acetone, methyl ethyl ketone, diisobutyl ketone, cyclohexanone, etc.), ethers (e.g., diethyl ether, dioxane, methyl cellulose, tetrahydrofuran, etc.), aliphatic hydrocarbons (e.g., kerosene, mineral oil, etc.), aromatic hydrocarbons (e.g., benzene, toluene, xylene, solvent oil, alkyl naphthalene, chloroaromatic hydrocarbon, chlorobenzene, etc.), halogenated hydrocarbons, amides, sulfones, dimethyl sulfoxide, mineral and vegetable oils, animal oils, etc., may be used.
Examples of the surfactant that can be used for emulsifying, dispersing, and/or wetting the active ingredient compound include fatty alcohol polyoxyethylene ether, polyoxyethylene alkylaryl ether, polyoxyethylene higher fatty acid ester, phosphate ester of polyoxyethylene alcohol or phenol, fatty acid ester of polyhydric alcohol, alkylaryl sulfonic acid, naphthalene sulfonic acid polymer, lignin sulfonate, branched copolymer of polymer comb, butylnaphthalene sulfonate, alkylaryl sulfonate, sodium alkylsulfonate, grease, polyacrylate such as condensate of fatty alcohol and ethylene oxide, alkyl taurate, and protein hydrolysate. Suitable oligosaccharides or polymers are, for example, based on ethylene monomers, acrylic acid, polyoxyethylene and/or polyoxypropylene alone or in combination with, for example, (poly) alcohols or (poly) amines.
For dispersion stabilization, adhesion and/or combination of the active ingredient compounds, adjuvants such as xanthan gum, magnesium aluminum silicate, gelatin, starch, cellulose methyl ether, polyvinyl alcohol, polyvinyl acetate and natural phospholipids (e.g., cephalin and lecithin), synthetic phospholipids, bentonite, sodium lignin sulfonate, etc. can be used.
Wherein the antifreezing agent can be selected from ethylene glycol, propylene glycol, glycerol, and sorbitol. As deflocculant for suspended products, adjuvants such as naphthalene sulfonic acid polymers, polymeric phosphates, and the like can be used.
As the defoaming agent, a silicone defoaming agent can be used.
Colorants that may be used, for example, inorganic pigments such as iron oxide, titanium oxide, and Prussian blue; organic pigments/dyes: alizarin dyes, azo dyes and metal phthalocyanine dyes; and trace elements such as iron, manganese, boron, copper, cobalt, molybdenum and zinc salts.
Optionally, other additional components may also be included, such as protective colloids, binders, thickeners, thixotropic agents, penetrating agents, stabilizers, masking agents.
The formulations of the invention can be prepared by mixing the active compounds with customary additives in a known manner. Such as conventional extenders and solvents or diluents, emulsifiers, dispersants, and/or binders or fixatives, wetting agents, waterproofing agents, and if desired, siccatives and colorants, stabilizers, pigments, defoamers, preservatives, thickeners, water, and other processing aids.
These compositions include not only those which are immediately applicable to the subject to be treated by means of suitable equipment such as spraying or dusting equipment, but also concentrated commercial compositions which are required to be diluted prior to application to the subject.
The tetrazolium-containing compounds of the present invention and cyazofamid may also be administered in combination with other active ingredients, for example, for expanding the spectrum of activity or preventing the development of resistance. Such as fungicides, bactericides, attractants, insecticides, acaricides, nematicides, growth regulators, herbicides, safeners, fertilizers or semiochemicals, etc.
Biological test case
There is a synergistic effect when the effect of the active compound combination exceeds the sum of the effects of each active compound when administered alone. The expected effect of a particular combination of two active compounds can be calculated using the so-called "Colby formula" (see S.R.Colby, "calculing synergy compounding AntagogonisticResponseseofHernicideCombination", weeds1967,15, 20-22) if
X is the activity when using active compound A in an amount of mg/ha or in a concentration mppm;
y is the activity when using active compound B in an amount of ng/ha or at a concentration of nppm, expressed as a percentage of untreated control;
e is the activity when using active compounds A and B in amounts of m and ng/ha or at concentrations of m and nppm,
then
If the actual observed activity (O) is greater than the expected activity (E), the composition has a synergistic effect.
The following biological test examples illustrate the invention. However, the present invention is not limited to these examples.
Test 1: alternaria test (tomato)
Solvent: 24.5 parts by weight of acetone
24.5 parts by weight of dimethylacetamide
Emulsifying agent: 1 part by weight of alkylaryl polyglycol ether
To obtain a suitable formulation of the active compound, 1 part by weight of active compound is mixed with a quantity of solvent and emulsifier, and the concentrate is diluted with water to the desired concentration.
To test for protective activity, tomato young plants are sprayed with the active compound preparation at a certain application rate. After the sprayed coating has dried, the plants are inoculated with an aqueous spore suspension of Alternaria alternata. The plants were then placed in an incubator at about 20℃with a relative atmospheric humidity of 100%.
The test results were evaluated 3 days after incubation. 0% means the efficacy corresponding to the control, and 100% means no symptoms.
TABLE 1
Table 1 clearly shows that the actual efficacy of the bactericidal composition of the invention against Alternaria alternata is higher than that calculated by the Colby formula, i.e. there is a synergistic effect.
Test 2: test for scab (apple)/efficacy test
Solvent: 24.5 parts by weight of acetone
24.5 parts by weight of dimethylacetamide
Emulsifying agent: 1 part by weight of alkylaryl polyglycol ether
To obtain a suitable formulation of the active compound, 1 part by weight of active compound is mixed with a quantity of solvent and emulsifier, and the concentrate is diluted with water to the desired concentration.
To test for protective activity, young apple tree plants are sprayed with the active compound preparation at a certain application rate. After the sprayed coating has dried, the young leaves are inoculated with an aqueous spore suspension of the apple scab fungus. The plants were then incubated for one day in an incubator at about 20 ℃ with 100% relative atmospheric humidity; the plants were then placed in a greenhouse at about 20 ℃, about 90% relative atmospheric humidity. The test results were evaluated 10 days after inoculation. 0% means the efficacy corresponding to the control, and 100% means no symptoms.
TABLE 2
Table 2 clearly shows that the actual efficacy of the bactericidal composition of the invention against scab is higher than that calculated by the Colby formula, i.e. there is a synergistic effect.
Test 3: corn stalk rot test
Solvent: 24.5 parts by weight of acetone
24.5 parts by weight of dimethylacetamide
Emulsifying agent: 1 part by weight of alkylaryl polyglycol ether
To obtain a suitable formulation of the active compound, 1 part by weight of the active compound is mixed with a quantity of solvent and emulsifier, and the concentrate is diluted with water to the desired concentration of the test liquid.
And mixing the culture thalli of the Pythium and Fusarium mixed bacteria cultured in the soil wheat bran culture medium into the tested soil to prepare the polluted soil.
And pouring the test liquid into the polluted soil. After irrigation, corn seeds are sown into the contaminated soil and covered from above. After sowing the corns for one week, the emergence condition of the corns is observed at any time. After 40 days, the occurrence of corn stalk rot is observed and recorded.
Drug effect calculation method
TABLE 3 Table 3
Table 3 clearly shows that the actual efficacy of the fungicidal composition of the present invention against Pythium and Fusarium is higher than that calculated by the Colby formula, i.e. there is a synergistic effect.
Test 4: clubroot test (Chinese cabbage)
Solvent: 24.5 parts by weight of acetone
24.5 parts by weight of dimethylacetamide
Emulsifying agent: 1 part by weight of alkylaryl polyglycol ether
To obtain a suitable formulation of the active compound, 1 part by weight of the active compound is mixed with a quantity of solvent and emulsifier, and the concentrate is diluted with water to 50ppm of a liquid spray formulation.
Spore suspension of plasmodiophora radiata (fungus density 1×10) 5 Fungi/g dry soil) is inoculated into sterilized soil. Transplanting healthy Chinese cabbage (2 pieces of true She Miaoling) into soil polluted by the rhizopus. On the day of transplanting, the test liquid medicine is poured into the polluted soil at the rate of 250 ml/plant. Setting water contrast. After planting for 50 days, the Chinese cabbage roots are pulled out for cleaning, the clubroot of the root system is observed, and the disease index and the prevention and treatment effect are calculated.
Drug effect calculation method
/>
Disease classification standard of Chinese cabbage clubroot:
grade 0 is no attached clubroot;
grade 1 is that the clubroot adheres to the lateral roots; the quantity of the clubroot accounts for 1% -25%;
grade 2 is that there is clubroot attached to the main root, the number of clubroot on the lateral root is more than 25%;
grade 3 is that there is clubroot attached to the main root, the amount of clubroot is 50% -75%;
grade 4 is the attachment of clubroot on the principal root, and the number of clubroot is more than 75%.
TABLE 4 Table 4
Table 4 clearly shows that the actual efficacy of the fungicidal composition of the present invention against the root of the fungus is higher than that calculated by the Colby formula, i.e., there is a synergistic effect.

Claims (5)

1. The use of a bactericidal composition for controlling pythium, fusarium, alternaria, cladosporium cucumerinum and plasmodiophora radicis plant pathogenic fungi is characterized in that the bactericidal composition comprises active compounds of tetrazolium picolinate and cyazofamid in a weight ratio of 2:1-1:2.
2. Use according to claim 1, characterized in that the weight ratio of tetrazolium picolinate to cyazofamid is 1:1.
3. A method for controlling the attack of plants, plant parts, plant propagation material and subsequently growing plant organs from saprophytes, fusarium, alternaria, cladosporium cucumerinum, plasmodiophora, characterized in that the fungicidal composition of claim 1 is applied to the plants, plant parts, plant propagation material or soil or cultivation medium in which the plants are growing or are desired to grow.
4. A method according to claim 3, comprising applying the fungicidal composition of claim 1 to plants, plant parts, plant propagation material or soil or cultivation medium in which plants are growing or are desired to grow, in an agronomically effective and substantially non-phytotoxic application amount, by seed treatment, foliar application, stem application, saturation, pouring, spraying, misting, dusting, scattering or fuming, or the like.
5. A method according to claim 3, wherein the tetrazole picolide and cyazofamid of claim 1 are administered simultaneously, or separately, or sequentially.
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