Other germicides

Germicide refers to chemicals that can kill or inhibit the bacteria or fungi. Germicide can kill or inhibit the growth and proliferation of pathogens at both outside the plant or inside the plants via the toxicity of the agents. Some kinds of germicides are non-toxic to the fungi, but can interfere with the process of pathogenic process of fungus or affect the interaction of pathogen – host, improving the plant defenses.

Non-toxic germicide: its activity on the fungus exhibits in affecting the fungal virulence and affecting the host pathogen relationship and improving the plant disease resistance. The effect of tricyclazole on rice blast fungus exhibits in inhibition the melanin synthesis during germination of spores upon invading the cork cell wall, causing failures of spores in penetrating through the host cell for invasion, namely through affecting the process of invading the cork cell wall and  affecting the necessary intracellular turgor pressure. The spray of dichloro-dimethyl cyclopropane carboxylic acid (DDCC) on rice leaves can prevent the expansion of blast lesions. This is due to that the drug promotes the accumulation of momilictones A and B in the tissue surrounding the lesion plant defense hormone momilictones A and B, so that the mycelium in the inner point of invasion can’t sprawl.

Toxic group and auxiliary group: the mechanism of germicide in killing or inhibiting pathogen is related to the molecular structure of germicide. The molecular structure of every germicide must contain toxic group or toxic elements such as the mercury element contained in organic mercury compounds and trichloromethylthi group contained in the captan. The virulence of germicide on fungi or bacteria is due to that these groups and element can break the cell metabolism, and ultimately resulting in cell death. The structure of the germicide also contains certain auxiliary group which can adjust the physical chemical properties of the compound. For example, the butylamine formyl group benomyl structure has a strong lipophilic property, thus increasing the ability of the agent in infiltrating the body of bacteria or fungi, thereby enhancing the germicidal effect.

According to a germicidal effect, it can be divided into reduced germicide and oxidizing germicide.
According to the basic principle of germicide in the control plant diseases, it can be divided into protection agents, therapeutic agents and eradicating agents.
According to the major ingredients, germicide can be divided into inorganic germicide, such as sulfites, bleaching powder, copper sulfate; organic germicide, such as peracetic acid, "Captan", benzoic acid, sorbic acid, "zineb" etc; organic ketone germicide such as trichlorophenol ketone; organic mercury germicide such as sulfonamides mercury and chlorinated ethyl mercury; organochlorine germicides such as pentachlorophenol, "procymidone", dichloro-naphthoquinone; sulfa germicide such as aminobenzene sulfonic acid; sulfur cyanide germicide such as titanium nitrate powder and so on; phenol germicide such as phenol germicide and salicylanilide; aldehydes type germicide such as formaldehyde; esters germicide such as parabens; surfactant germicide.
According to the application approach, germicide can be divided into seed treatment agent, soil treatment agent and foliar sprays.
According the performance of absorption and translocation inside plants, germicide can be divided into non systematic germicide and systematic germicide.
According to the application, germicide can be divided into universal type, food type, medical type, agricultural and pastoral type, cleaning type, leather type, and paint type as well as other specialty germicides.

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Structure Chemical Name CAS MF
Propiconazole Propiconazole 60207-90-1 C15H17Cl2N3O2
Flutriafol Flutriafol 76674-21-0 C16H13F2N3O
Tebuconazole Tebuconazole 107534-96-3 C16H22ClN3O
Penconazole Penconazole 66246-88-6 C13H15Cl2N3
Azoxystrobin Azoxystrobin 131860-33-8 C22H17N3O5
1,2-Dibromo-3-chloropropane 1,2-Dibromo-3-chloropropane 96-12-8 C3H5Br2Cl
Cyproconazole Cyproconazole 94361-06-5 C15H18ClN3O
Trifloxystrobin Trifloxystrobin 141517-21-7 C20H19F3N2O4
Isothiazolinones Isothiazolinones 26172-55-4 C4H4ClNOS
4,5-Dichloro-2-octyl-isothiazolone 4,5-Dichloro-2-octyl-isothiazolone 64359-81-5 C11H17Cl2NOS
Propamocarb Propamocarb 24579-73-5 C9H20N2O2
Myclobutanil Myclobutanil 88671-89-0 C15H17ClN4
Hexaconazole Hexaconazole 79983-71-4 C14H17Cl2N3O
Cymoxanil Cymoxanil 57966-95-7 C7H10N4O3
Benalaxyl Benalaxyl 71626-11-4 C20H23NO3
Flusilazole Flusilazole 85509-19-9 C16H15F2N3Si
Climbazole Climbazole 38083-17-9 C15H17ClN2O2
DBDCB DBDCB 35691-65-7 C6H6Br2N2
PYROQUILON PYROQUILON 57369-32-1 C11H11NO
DICHLOFLUANID DICHLOFLUANID 1085-98-9 C9H11Cl2FN2O2S2
DICLOMEZINE DICLOMEZINE 62865-36-5 C11H8Cl2N2O
Fluazinam Fluazinam 79622-59-6 C13H4Cl2F6N4O4
Fenpropidin Fenpropidin 67306-00-7 C19H31N
PYRIFENOX PYRIFENOX 88283-41-4 C14H12Cl2N2O
Ofurace Ofurace 58810-48-3 C14H16ClNO3
Fluotrimazol Fluotrimazol 31251-03-3 C22H16F3N3
THIFLUZAMIDE THIFLUZAMIDE 130000-40-7 C13H6Br2F6N2O2S
1,3-Dichloro-5,5-dimethylhydantoin 1,3-Dichloro-5,5-dimethylhydantoin 118-52-5 C5H6Cl2N2O2
Pencycuron Pencycuron 66063-05-6 C19H21ClN2O
METIRAM METIRAM 9006-42-2 C12H12N6S16Zn
FENPROPIMORPH FENPROPIMORPH 67306-03-0 C20H33NO
NUARIMOL NUARIMOL 63284-71-9 C17H12ClFN2O
TRIFLUMIZOLE TRIFLUMIZOLE 68694-11-1 C15H15ClF3N3O
PYRAZOPHOS PYRAZOPHOS 13457-18-6 C14H20N3O5PS
TOLYLFLUANID TOLYLFLUANID 731-27-1 C10H13Cl2FN2O2S2
THIOPHANAT-ETHYL THIOPHANAT-ETHYL 23564-06-9 C14H18N4O4S2
Diclobutrazol Diclobutrazol 75736-33-3 C15H19Cl2N3O
2,2-Dibromo-2-nitroethanol 2,2-Dibromo-2-nitroethanol 69094-18-4 C2H3Br2NO3
CYAZOFAMID CYAZOFAMID 120116-88-3 C13H13ClN4O2S
Imazalil sulfate Imazalil sulfate 58594-72-2 C14H16Cl2N2O5S
Mepronil Mepronil 55814-41-0 C17H19NO2
Fludioxonil Fludioxonil 131341-86-1 C12H6F2N2O2
Fenpropimorph Fenpropimorph 67564-91-4 C20H33NO
Tecloftalam Tecloftalam 76280-91-6 C14H5Cl6NO3
PYRIMIDIFEN PYRIMIDIFEN 105779-78-0 C20H28ClN3O2
Tridemorph Tridemorph 24602-86-6 C19H39NO
Bronopol Bronopol 52-51-7 C3H6BrNO4
BENTHIAVALICARB-ISOPROPYL BENTHIAVALICARB-ISOPROPYL
PHENYLMERCURIC CHLORIDE PHENYLMERCURIC CHLORIDE 100-56-1 C6H5ClHg
DITHIANON DITHIANON 3347-22-6 C14H4N2O2S2
ETHIRIMOL ETHIRIMOL 23947-60-6 C11H19N3O
2-(Thiocyanatomethylthio)benzothiazole 2-(Thiocyanatomethylthio)benzothiazole 21564-17-0 C9H6N2S3
TECNAZENE TECNAZENE 117-18-0 C6HCl4NO2
CAPTAFOL CAPTAFOL 2425-06-1 C10H9Cl4NO2S
Prochloraz Prochloraz 67747-09-5 C15H16Cl3N3O2
Dimethachlon Dimethachlon 24096-53-5 C10H7Cl2NO2
HEXACHLOROBENZENE-UL-14C HEXACHLOROBENZENE-UL-14C 67471-27-6 C6Cl6
DIMETHIRIMOL DIMETHIRIMOL 5221-53-4 C11H19N3O
GLYODIN GLYODIN 556-22-9 C22H44N2O2
METHFUROXAM METHFUROXAM 28730-17-8 C14H15NO2
SULFUR-32 SULFUR-32 13981-57-2 S
ACIBENZOLAR-S-METHYL ACIBENZOLAR-S-METHYL 135158-54-2 C8H6N2OS2
Benthiavalicarb-isopropyl Benthiavalicarb-isopropyl 177406-68-7 C18H24FN3O3S
PIPERALIN PIPERALIN 3478-94-2 C16H21Cl2NO2
POTASSIUM THIOCYANATE-13C-15N POTASSIUM THIOCYANATE-13C-15N 143673-61-4 CKNS
Pyraclostrobin Pyraclostrobin 175013-18-0 C19H18ClN3O4
CADUSAFOS CADUSAFOS 95465-99-9 C10H23O2PS2
Dichloroglyoxime Dichloroglyoxime 2038-44-0 C2H2Cl2N2O2
IMIBENCONAZOLE IMIBENCONAZOLE 86598-92-7 C17H13Cl3N4S
Captan Captan 133-06-2 C9H8Cl3NO2S
ETACONAZOLE ETACONAZOLE 71245-23-3 C14H15Cl2N3O2
PYRACARBOLID PYRACARBOLID 24691-76-7 C13H15NO2
Metalaxyl Metalaxyl 57837-19-1 C15H21NO4
Pyrimethanil Pyrimethanil 53112-28-0 C12H13N3
Guazatine acetate salt Guazatine acetate salt 115044-19-4 C24H53N7O6
FURALAXYL FURALAXYL 57646-30-7 C17H19NO4
alpha-butyl-alpha-phenyl-1H-imidazole-1-propiononitrile alpha-butyl-alpha-phenyl-1H-imidazole-1-propiononitrile 61019-78-1 C16H19N3
Procymidone Procymidone 32809-16-8 C13H11Cl2NO2
Dazomet Dazomet 533-74-4 C5H10N2S2
POTASSIUM THIOCYANATE (13C) POTASSIUM THIOCYANATE (13C) 143827-33-2 CKNS
FLUOXASTROBIN FLUOXASTROBIN 361377-29-9 C21H16ClFN4O5
Iprodione Iprodione 36734-19-7 C13H13Cl2N3O3
BROMUCONAZOLE BROMUCONAZOLE 116255-48-2 C13H12BrCl2N3O
Folpet Folpet 133-07-3 C9H4Cl3NO2S
ANILAZINE ANILAZINE 101-05-3 C9H5Cl3N4
FENBUCONAZOLE FENBUCONAZOLE 114369-43-6 C19H17ClN4
DITALIMFOS DITALIMFOS 5131-24-8 C12H14NO4PS
HEXACHLOROBENZENE 13C6 HEXACHLOROBENZENE 13C6 93952-14-8 C6Cl6
FORMALDEHYDE-D2 FORMALDEHYDE-D2 1664-98-8 CD2O
VINCLOZOLIN VINCLOZOLIN 50471-44-8 C12H9Cl2NO3
Pefurazoate Pefurazoate 101903-30-4 C18H23N3O4
OXYCARBOXIN OXYCARBOXIN 5259-88-1 C12H13NO4S
Famoxadone Famoxadone 131807-57-3 C22H18N2O4
FENPICLONIL FENPICLONIL 74738-17-3 C11H6Cl2N2
IMINOCTADINE TRIACETATE IMINOCTADINE TRIACETATE 39202-40-9 C24H53N7O6
TRIAZOXIDE TRIAZOXIDE 72459-58-6 C10H6ClN5O
Carboxin Carboxin 5234-68-4 C12H13NO2S
BISMERTHIAZOL BISMERTHIAZOL 79319-85-0 C5H6N6S4
FLUTOLANIL FLUTOLANIL 66332-96-5 C17H16F3NO2
1,3-THIAZOLIDIN-2-ONE 1,3-THIAZOLIDIN-2-ONE 2682-49-7 C3H5NOS
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