Health & Environmental Research Online (HERO)


Print Feedback Export to File
2002470 
Journal Article 
VARIABILITY IN THE SENSITIVITY OF RHIZOCTONIA-SOLANI ANASTOMOSIS GROUPS TO FUNGICIDES 
Kataria, HR; Verma, PR; Gisi, U 
1991 
Yes 
Journal of Phytopathology
ISSN: 0931-1785
EISSN: 1439-0434 
BIOSIS/92/00350 
133 
2 
121-133 
eng 
WOS:A1991GK48400005 
BIOSIS COPYRIGHT: BIOL ABS. Tolclofos-methyl, iprodione and cyproconazole, among the eleven fungicides tested in vitro, gave consistently strong inhibition against all ten anastomosis groups (AGs) of Rhizoctonia solani. Carboxin, furmecyclox, thiabendazole, fenpropimorph and vinclozolin also inhibited all AGs but with wide variations in toxicity levels (EC90 values). Pencycuron showed strong activity against four AGs but was ineffective against the other six AGs. Generally, R. solani AGs were insensitive to fenarimol and imazalil. Tolclofos-methyl strongly inhibited 23 AG2-1 and 20 AG4 rapeseed/canola R. solani isolates from different locations in Saskatchewan, Alberta and Manitoba (Canada). The same isolates were also sensitive to iprodione, cyproconazole and carboxin. All AG4 canola isolates were insensitive to pencycuron (EC90 sensitivity with EC90s ranging from 0.5 to 220 mg/l. Tolclofos-methyl, applied to Brassica napus (can 
Ecology; Biochemistry; Plants/growth & development; Plant diseases; Preventive medicine; Herbicides; Pest control; Pesticides; Mitosporic fungi