Wpływ terminu wykonania jesiennych zabiegów fungicydowych na nasilenie objawów suchej zgnilizny kapustnych na rzepaku w regionie Dolnego Śląska

• Autorzy: Brachaczek A. , Kaczmarek J. , Bilicka M. , Jedryczka M.

Warianty tytułu

EN

Impact of timing of autumn fungicide treatments on infection of oilseed rape by stem canker of crucifers in Lower Silesia

• Języki publikacji: PL

Abstrakty

EN

A field experiment performed in 2008 and 2009 autumn seasons in Southern Poland (Lower Silesia) using hybrid winter oilseed rape cultivar PR46W10 (Pioneer Hi-Bred) proved the significant effect of fungicide spraying time on the incidence and severity of symptoms caused by fungal pathogens Leptosphaeria maculans and L. biglobosa. The disease incidence and severity were the lowest (6.7%) when the fungicide (Capitan 250 EW, flusilazole 250 g/l) was applied in the time following mass ascospore release. The population of the pathogens greatly differed between years: in the autumn of 2008 L. maculans dominated (92%) over L. biglobosa, whereas in 2009 it was the opposite, and L. maculans was re-isolated from 7% symptoms only. Summer and early autumn of 2008 was cooler and wetter as compared to the same period in 2009. The results show that the introduction of decision support systems may cause more efficient protection of oilseed rape against stem canker of brassicas, one of the most important diseases of oilseed rape worldwide.

Słowa kluczowe

PL

choroby roslin; Dolny Slask; fungicydy; jesien; nasilenie objawow; objawy chorobowe; ochrona roslin; rzepak; sucha zgnilizna kapustnych; terminy wykonania; zabiegi ochrony roslin; zwalczanie chorob roslin

EN

plant disease; Lower Silesian region; fungicide; autumn; symptom intensity; disease symptom; plant protection; rape; cabbage dry rot; application term; agrotechnical treatment term; plant protection treatment; plant disease control

• Wydawca: -
• Czasopismo: Progress in Plant Protection
• Rocznik: 2010
• Tom: 50
• Numer: 2
• Opis fizyczny: s.620-624,wykr.,bibliogr.

Twórcy

autor

Brachaczek A.

• DuPont Poland Sp. z o.o., ul.Powązkowska 44c, 01-797 Warszawa

autor

Kaczmarek J.

autor

Bilicka M.

autor

Jedryczka M.

Bibliografia

• Calderon C., Ward E., Freeman J., Foster S.J., McCartney H.A. 2002. Detection of airborne inoculum of Leptosphaeria maculans and Pyrenopeziza brassicae in oilseed rape crops by polymerase chain reaction (PCR) assays. Plant Pathol. 51 (3): 303–310.
• Fitt B.D.L., Brun H., Barbetti M.J., Rimmer R.S. 2006. World-wide importance of phoma stem canker (Leptosphaeria maculans and L. biglobosa) on oilseed rape (Brassica napus). Eur. J. Plant Pathol. 114: 3–15.
• Jędryczka M. 2006. Epidemiologia i szkodliwość suchej zgnilizny kapustnych na rzepaku ozimym w Polsce. Rozprawy i Monografie IGR PAN 17, 150 ss.
• Jędryczka M., Kaczmarek J., Dawidziuk A., Brachaczek A. 2008. System for forecasting disease epidemics – aerobiological methods in polish agriculture. Aspects Appl. Biol. 89: 65–70.
• Mahuku G.S., Hall R., Goodwin P.H. 1996. Co-infection and induction of systemic acquired resistance by weakly and highly virulent isolates of Leptosphaeria maculans in oilseed rape. Physiol. Mol. Plant Pathol. 49: 61–72.
• Toscano-Underwood C., West J.S., Fitt B.D.L., Todd A.D., Jedryczka M. 2001. Development of phoma lesions on oilseed rape leaves inoculated with ascospores of A-group or B-group Leptosphaeria maculans (stem canker) at different temperatures and wetness durations. Plant Pathol. 50: 28–41.
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