The Effect of Biopreparations and Biostimulants on the Chemical Composition and Microorganisms Associated with Verticillium Wilt of Horseradish Roots (Armoracia rusticana Gaertn.)

The basic foundation of plant production consists in protection treatments, which largely shape the quality raw material intended for food industry. Due to its long growing season, horseradish requires more treatments than average. Intensive based on synthetic pesticides favours accumulation their residues plants and generates serious environmental problems. We have examined effect chemical reduced variant as well three variants biological protection, differentiated terms preparations used seedlings treatment (Pythium oligandrum, Bacillus subtilis, Ecklonia maxima), content dry matter, protein, fat, carbohydrates, disease severity index (DSI) Verticillium wilt roots. quantitative qualitative changes microorganism communities associated with this were determined. Thirty-four species fungi Globisporangium irregulare been shown contribute pathogenesis wilt. following found highest frequency: dahliae (14.37%), G. (6.87%), Ilyonectria destructans (6.73%), Fusarium acuminatum (6.53%), Rhisoctonia solani (6.75%), Epicoccum nigrum (5.56%), Alternaria brassicae (5.36%).We that water deficit promotes increase DSI reduces number richness fungal isolated from diseased E. maxima extract protectionin seasons give best protective effects. Under conditions optimal supply, (P. oligandrum) is effective protection. Biological increases biodiversity population microorganisms blackening conductive bundles There a significant negative correlation between value. Increasing CFUs accompanied by reduction symptoms years sufficient supply results carbohydrates influence ash roots alkalinity decrease.