Reference

Tolerance of Sclerotinia fructicola to benzimidazole fungicides and control of the fungus

Tolerance of Sclerotinia fructicola to benzimidazole fungicides and control of the fungus. Penrose, L. J.; Koffman, W. (Biol. Chem. Res. Inst., Rydalmere, Aust.). Phytopathol. Z., 88(2), 153-64 (English) 1977. CODEN: PHYZA3. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemicals) Two benomyl (I) [17804-35-2]-tolerant isolates of S. fructicola germinated and grew normally in 1 .mu.g/mL I and germ tubes were only slightly distorted in 100 .mu.g/mL. Susceptible isolates produced greatly distorted germ tubes in 0.1 .mu.g/mL. Growth of I-susceptible isolates from mycelial discs did not occur in 1 .mu.g/mL I, while growth of the tolerant isolates was only slightly reduced in 100 .mu.g/mL. Cross tolerance to 2 other benzimidazole fungicides, carbendazim [10605-21-7] and thiophanate-methyl [23564-05-8] was demonstrated. Another systemic fungicide, triforine [26644-46-2], and the nonsystemic fungicides, captan [133-06-2] and glycophene (II) [36734-19-7], inhibited the germination and mycelial growth of both I-tolerant and I-susceptible strains. I and an exptl. fungicide, DUPA 164 [62713-28-4], applied as dips, failed to control fruit rot in peaches inoculated with I-tolerant spores. Triforine, II, and an exptl. fungicide, R 27180 [58594-72-2], were effective in controlling fruit rot.

The potential for control of ascochyta blight of lentil with foliar-applied fungicides

The potential for control of ascochyta blight of lentil with foliar-applied fungicides. Beauchamp, C. J.; Morrall, R. A. A.; Slinkard, A. E. (Dep. Biol., Univ. Saskatchewan, Saskatoon, SK S7N 0W0, Can.). Can. J. Plant Pathol., 8(3), 254-9 (English) 1986. CODEN: CJPPD6. ISSN: 0706-0661. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) The effects of fungicides on ascochyta blight of lentil caused by Ascochyta fabae f. sp. lentis were investigated. Lab. tests were conducted to det. the fungitoxicity of benomyl [17804-35-2], captafol [2425-06-1], carbathiin [5234-68-4], chlorothalonil [1897-45-6], dinocap [39300-45-3], dodine [2439-10-3], DPX H6573 [85509-19-9], fenarimol [60168-88-9], folpet [133-07-3], imazalil sulfate [58594-72-2], mancozeb [8018-01-7], metiram [9006-42-2], nuarimol [63284-71-9], propiconazole [60207-90-1], RH 5781F [92480-57-4], and thiophanate Me [23564-05-8] on conidial germination and mycelial growth. Captafol, chlorothalonil, folpet, and metiram completely inhibited conidial germination at 10 mg/mL or less. Benomyl and DPX H6573 completely inhibited mycelial growth at 32 mg/mL or less. In field tests, the effects of foliar application of 11 fungicides on disease severity, seed yield, and percentage seed infection were studied in 1983 and 1984 with Common Chilean lentil in artificially inoculated plots. Using a single application at early bloom to early pod set, chlorothalonil, captafol, folpet, and metiram provided the best protection. 63284-71-9 and 133-07-3 are just another two chemicals used in this study. Seed yield was increased and seed infection was reduced by these fungicides. .