The Effect of Flax Seed Dressing with Biopreparations, Chitosan, and its Derivatives on Fungal Communities in Soil
Katarzyna Wielgusz1, Aleksandra Andruszewska1, Elżbieta Pląskowska2, Wojciech Szewczyk3, Jan Bocianowski4, Zbigniew Weber5
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1Department of Breeding and Agronomy of Fibrous Plants, Institute of Natural Fibres and Medicinal Plants,
Wojska Polskiego 71B, 60-625 Poznań, Poland
2Department of Plant Protection, Wrocław University of Environmental and Life Sciences,
Plac Grunwaldzki 24A, 50-363 Wrocław, Poland
3Department of Forest Phytopathology, Poznań University of Life Sciences,
Wojska Polskiego 71C, 60-625 Poznań, Poland
4Department of Mathematical and Statistical Methods, Poznań University of Life Sciences,
Wojska Polskiego 28, 60-637 Poznań, Poland 5Department of Phytopathology, Poznań University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland
Pol. J. Environ. Stud. 2011;20(1):215-224
The effect of flax seed dressing with biopreparations, chitosan, and its derivatives on fungal communities in soil was evaluated. Biopreparation organisms consisted of: Pseudomonas aureofaciens, P. fluorescens, Pythium oligandrum, a mixture of photosynthetic and Lactobacillus bacteria, and unidentified yeasts and fungi. Chitosan and its derivative active ingredients were used: chitosan microcrystalline, chitosan acetate, and chitosan oligomers. Untreated flax seeds and seeds dressed with Zaprawa Oxafun T 75 DS fungicide containing carboxin and thiram active ingredients were used for controls. In general, Pythium oligandrum caused a greater decrease in soil fungal colony-forming units (cfu) than the Zaprawa Oxafun T 75 DS fungicide and all other preparations tested. Pseudomonas aureofaciens and P. fluorescens generally produced similar decreases in soil fungal cfu compared to fungicide controls. Chitosan and its derivatives almost always caused a decrease in fungal cfu, but these decreases were less pronounced than that in fungicide controls.
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