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EN
The aim of the study was to assess the efficiency of selected fungicides in protecting the stem base of winter wheat against pathogenic fungi. The study was carried out on plots of winter wheat, variety Platin, in three growing seasons. Eight fungicides were applied to the plants at first node stage. Samples of wheat stems were collected at the stage of medium milk (grain content milky), and then the percentage of the stem bases infected by pathogens and the efficiency of the applied fungicides were assessed. In individual years of research, a variable intensity of the occurrence of diseases of the base of winter wheat stalk was observed. The presence of Fusarium spp. – fusarium stem rot, Rhizoctonia cerealis – sharp eyespot and Oculimacula spp. - eyespot, was recorded. The fungicides used in the experiment showed different effectiveness in controlling diseases of the wheat stem base.
PL
Celem badań była ocena skuteczności wybranych fungicydów w ochronie podstawy źdźbła pszenicy ozimej przed grzybami patogenicznymi. Badania przeprowadzono na poletkach z pszenicą ozimą odmiany Platin w trzech sezonach wegetacyjnych. Zastosowano osiem fungicydów, wykonując zabieg opryskiwania roślin w fazie pierwszego kolanka. Próbki źdźbeł roślin pobierano w fazie mlecznej dojrzałości ziarna, a następnie oceniano procent porażenia podstaw źdźbeł przez patogeny oraz skuteczność działania zastosowanych środków grzybobójczych. W poszczególnych latach badań zaobserwowano zmienne nasilenie występowania chorób podstawy źdźbła pszenicy ozimej. Stwierdzono obecność Fusarium spp. – sprawców fuzaryjnej zgorzeli podstawy źdźbła i korzeni, Oculimacula spp. – sprawców łamliwości źdźbła zbóż i traw oraz Rhizoctonia cerealis – sprawcy ostrej plamistości oczkowej. Zastosowane w badaniach fungicydy wykazały zróżnicowaną skuteczność w zwalczaniu chorób podstawy źdźbła pszenicy ozimej.
EN
The aim of the study was to evaluate the efficacy of growth inhibition of the most important oilseed rape disease agents, by fungicides used for the crop protection. Isolates: A. brassicae, A. brassicicola and A. alternata (black spot disease), L. maculans (stem canker), B. cinerea (gray mold) and S. sclerotiorum (sclerotinia stem rot) were used. The study was performed under laboratory conditions, on PDA medium containing: azoxystrobin (strobilurin), cyproconazole, tebuconazole, tetraconazole (triazoles), prochloraz (imidazole), carbendazim and thiophanate-methyl (benzimidazoles) in concentrations 1 and 6 ppm. The tested fungicides were characterized by high variability of growth inhibition level of the tested species. Prochloraz and triazoles limited the growth of tested species the most effectively. The weakest inhibition level for L. maculans, B. cinerea and Alternaria spp. was shown by benzymidazoles, while azoxystrobin was ineffective for grown reducing most of S. sclerotiorum and some of B. cinerea isolates.
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