Chemical control of barley leaf pathogens and influence of fungicides on Fusarium spp. occurence in grains
2003
Hudec, K. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic). Katedra Ochrany Rastlin) | Muchova, D. | Ondrejcak, F.
During 1999-2001, the fungicides carbendazim + prochloraz, epoxiconazole + tridemorph, spiroxamine + tebuconazole + triadimenol, kresoxim-methyl + epoxiconazole and azoxystrobin were tested for their efficacy in the control of Blumeria graminis (DC.)E.O., Pyrenophora feres Drechsler, Rhynchosporium secalis (Oudem.) J. Davis on leaves and of Fusarium spp. in kernels in the locality Maly Saris [East Slovakia]. The highest effectiveness against B. graminis was observed (in downward order) for kresoxim-methyl + epoxiconazole, spiroxamine + tebuconazole + triadimenol, epoxiconazole + tridemorph, azoxystrobin and prochloraz + carbendazim. The R. secalis infestation was very low during the seasons evaluated, the most damaging pathogen was P. feres. Seed treatment by carboxin + thiram significantly reduced primary P. feres seed infection. Only strobilurins were able to provide good fungicide control of P. feres. All the fungicides applied prevented from yield losses, but only strobilurin application significantly increased yield. A substantial decrease in Fusarium spp. infection of kernels was recorded after applying strobilurins, epoxiconazole + tridemorph and prochloraz + carbendazim
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