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The aim of two year field investigations was to evaluate the effect of seed-potato dressing and plants spraying treatments with biotechnical preparations (Biosept 33 SL – a.s. extract of grapefruit, Biochikol 020 PC – a.s. chitosan) on infection of potato tubers by Rhizoctonia solani and Helminthosporium solani. As a standard fungicide Vitavax 2000 FS (a.s. karboxin and thiuram) was used. During the...
W wyniku analizy mitologicznej z chorych bulw i korzeni cyklamenów zidentyfikowano 15 gatunków grzybów. Spośród wyizolowanych kolonii grzybów do gatunków dominujących należały: Fusarium oxysporum, Botrytis cinerea, Alternaria alternata, Cylindrocarpon radicicola i Penicillium purpurogenum. Wyniki uzyskane z przeprowadzonych badań chorobotwórczości wyżej wymienionych grzybów wykazały, że z wyjątkiem...
W dwuletnich badaniach polowych i laboratoryjnych oceniano wpływ ochrony na porażenie naci marchwi odmiany Koral przez alternariozę oraz na rozwój Alternaria alternata, A. chartarum i A. radicina. W doświadczeniu stosowano Biochikol 020 PC (chitozan 2%), Biosept 33 SL (33% wyciąg z grejpfruta) oraz jako preparat porównawczy Signum 33 WG (piraklostrobina 6,7%, boskalid 26,7%). W badaniach laboratoryjnych...
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