Chemical Control of Septoria Blight of Parsley Caused by Septoria petroselini

The effects of various fungicides on spore germination, mycelial growth, seed transmission, and infection by Septoria petroselini Desm., the causal agent of Septoria blight of parsley, were determined in this study. Eleven fungicides (azoxystrobin, benomyl, captan, copper oxychloride, kresoxim-methyl mancozeb, maneb, propineb, tebuconazole, thiram, and trifloxystrobin) were tested at various concentrations ranging from 0.025 to 50 mg l-1 in spore germination and mycelial growth assays. Tebuconazole was the most effective fungicide in all the experiments, with an EC50 value < 0.052 mg l-1, followed by azoxystrobin, captan, and trifloxystrobin, with EC50 values of 0.053, 0.06, and 0.066 mg l-1, respectively. Many of the fungicides were effective on spore germination in PDA medium at concentrations ranging from 0.052 mg l-1 (Tebuconazole) to 23.032 mg l-1 (copper oxychloride). Captan, mancozeb, maneb, and thiram were very effective at reducing spore germination, but were less effective at reducing mycelial growth, for which their EC50 values were up to 735-, 192-, 192-, and 191-fold higher, respectively. Seed transmission of Septoria blight of parsley was controlled by tebuconazole, benomyl, azoxystrobin, kresoxim-methyl, and captan, which had inhibition rates of up to 95%, 93%, 93%, and 66%, respectively. Azoxystrobin, benomyl, kresoxim-methyl, trifloxystrobin, and tebuconazole inhibited Septoria blight in vivo, but captan, mancozeb, and maneb were effective at reducing the number of lesions only when they were applied before inoculation. Copper oxychloride, the most extensively used fungicide for controlling Septoria blight by parsley growers, was surprisingly the least effective in all the experiments.

Chemical Control of Septoria Blight of Parsley Caused by Septoria petroselini

The effects of various fungicides on spore germination, mycelial growth, seed transmission, and infection by Septoria petroselini Desm., the causal agent of Septoria blight of parsley, were determined in this study. Eleven fungicides (azoxystrobin, benomyl, captan, copper oxychloride, kresoxim-methyl mancozeb, maneb, propineb, tebuconazole, thiram, and trifloxystrobin) were tested at various concentrations ranging from 0.025 to 50 mg l-1 in spore germination and mycelial growth assays. Tebuconazole was the most effective fungicide in all the experiments, with an EC50 value < 0.052 mg l-1, followed by azoxystrobin, captan, and trifloxystrobin, with EC50 values of 0.053, 0.06, and 0.066 mg l-1, respectively. Many of the fungicides were effective on spore germination in PDA medium at concentrations ranging from 0.052 mg l-1 (Tebuconazole) to 23.032 mg l-1 (copper oxychloride). Captan, mancozeb, maneb, and thiram were very effective at reducing spore germination, but were less effective at reducing mycelial growth, for which their EC50 values were up to 735-, 192-, 192-, and 191-fold higher, respectively. Seed transmission of Septoria blight of parsley was controlled by tebuconazole, benomyl, azoxystrobin, kresoxim-methyl, and captan, which had inhibition rates of up to 95%, 93%, 93%, and 66%, respectively. Azoxystrobin, benomyl, kresoxim-methyl, trifloxystrobin, and tebuconazole inhibited Septoria blight in vivo, but captan, mancozeb, and maneb were effective at reducing the number of lesions only when they were applied before inoculation. Copper oxychloride, the most extensively used fungicide for controlling Septoria blight by parsley growers, was surprisingly the least effective in all the experiments.

___

  • Cerkauskas, R.F. and J. Uyenaka. 1990. First report of Septoria blight of parsley in Ontario. Plant Dis. 74: 1037.
  • Fitt, B.D.L., H.A. McCartney and P.J. Walklate. 1989. The role of rain in dispersal of pathogen inoculum. Annu. Rev. Phytopathology 1: 87-94.
  • Fournet, J. 1969. Propietes et role du cirrhe du Septoria nodorum Berk. Ann. Phytopathol. 1: 87-94.
  • Hochmuth, G.J., D.N. Maynard, C.S. Vavrina, W.M. Stall, T.A. Kucharek, P.A. Stansly and A.G. Smajstrla. 1999. Parsley Production in Florida: In: G.J. Hochmuth (ed.), Vegetable Production Guide in Florida, SP 170, University of Florida, Gainesville. p. 189-192.
  • Kurt, S. 2003. First report of Septoria blight of parsley caused by Septoria petroselini in the Mediterranean region of Turkey. Plant Dis. 87: 99.
  • Kurt, S. and F.M. Tok. 2006. Influence of inoculum concentration, leaf age, temperature and duration of leaf wetness on Septoria blight of parsley. Crop Prot. 25: 556-561.
  • Lacy, M.L., R.D. Berger, R.L. Girbertson and E.L. Little. 1996. Current challenges in controlling diseases of celery. Plant Dis. 80: 1084- 1091.
  • Mohammad, S.E. 1990. Identification study of parsley late blight in Nenevah province, Iraq. Mesopotamia J. Agric. 22: 313-319.
  • Pernezny, K., T. Momol, N. Peres, R. Raid and P. Roberts 2007. Florida plant diseases management guide: Chemical control guide for diseases of vegetable 18.
  • Raid, R. and P. Roberts. 2004. Florida plant diseases management guide 3: 43.
  • Raid, R. and P. Roberts. 2007. Florida plant diseases management guide: Parsley.
  • Scholze, P. Marthe, F. Kramer, R. Proll, E. Rudi and Z. Pank, F. 1996. Diseases of parsley (Petroselinum crispum) in 1995. In: Proceedings of International Symposium on Medicinal and Aromatic Plants, Quedlinburg, Germany, pp. 247-249.
  • Sherf, A.F. and A.A. MacNab. 1986. Celery. In: Vegetable Diseases and their Control, Wiley, New York, USA, pp. 157-201.
  • Smith, J.M., J. Dunez, D.H. Philips, L.A. Lelliott and S.A. Archer. 1988. European Handbook of Plant Diseases, Blackwell Scientific Publications, Oxford, pp. 583.
  • Tok, F.M. and S. Kurt. 2004. Incidence and prevalence of Septoria blight in the parsley growing areas of Hatay province. In: Proceedings of the First Plant Protection Congress of Turkey, pp. 191.
  • Vesilescu, B.I., H. Avenot, N.B. Simoneau, E. Laurent, M. Guenard and P. Simoneau. 2004. In vitro fungicide sensitivity of Alternaria species pathogenic to crucifers and identification of Alternaria brassicicola field isolates highly resistant to both dicarboximides and phenylpyrroles. Crop Prot. 23: 481-488.
Turkish Journal of Agriculture and Forestry-Cover
  • ISSN: 1300-011X
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
Sayıdaki Diğer Makaleler

Some Properties of Eucalyptus Wood Flour Filled Recycled High Density Polyethylene Polymer-Composites

Fatih MENGELOĞLU, Kadir KARAKUŞ

Production Potential of a Natural Pasture Compared to a Wheat Pasture, Both Grazed by Lactating Goats under Mediterranean Climate Conditions

Basri Hakan HAKYEMEZ, Ahmet GÖKKUŞ, İsmail Yaman YURTMAN, Türker SAVAŞ

Effect of Different Planting Dates on Yield and Yield Components of Peanut (Arachis hypogaea L.)

Öner CANAVAR, Mustafa Ali KAYNAK

Chemical Control of Septoria Blight of Parsley Caused by Septoria petroselini

Fatih Mehmet TOK

Field Resistance of Wheat (Triticum aestivum L.) Genotypes from Different Countries to Leaf Rust (Puccinia triticina)

Beyhan AKIN, Nusret ZENCİRCİ, İzzet ÖZSEVEN

Host Preference and Nutrition Efficiency of the Gypsy Moth, Lymantria dispar L. (Lymantriidae: Lepidoptera), on Different Poplar Clones

Mehrdad Ghodskhahe DARYAEI, Simin DARVISHI, Kayvan ETEBARI, Mansor SALEHI

Response of Silage Maize (Zea mays L.) to Nitrogen Fertilizer after Different Crops in a Semi Arid Environment

İsmail GÜL, Mehmet YILDIRIM, Cuma AKINCI, İlhan DORAN, Hasan KILIÇ

Genetic Analysis of Grain Yield and Starch Content in Nine Maize Populations

Zvonimir ZDUNIC, Anto MIJIC, Krunoslav DUGALIC, Domagoj SIMIC, Josip BRKIC, Ana MARJANOVIC-JEROMELA

Comparison of Different Chemical Pulps from Wheat Straw and Bleaching with Xylanase Pre-Treated ECF Method

Saim ATEŞ, Celil ATİK, Yonghao NI, Esat GÜMÜŞKAYA

Litter mass loss rates in deciduous and coniferous trees in Artvin, northeast Turkey: Relationships with litter quality, microclimate, and soil characteristics

Mehmet KÜÇÜK, Temel SARIYILDIZ