Effect of Trichoderma spp. and Fertilization on the Flowering of Begonia × tuberhybrida Voss. ‘Picotee Sunburst’

The aim of the study was to assess influence Trichoderma spp. and different fertilization levels on flowering nutritional status Begonia × tuberhybrida Voss. ‘Picotee Sunburst’ plants. Before planting, tubers were soaked in water or a mixture spore (T. viride Schumach–Tv14, T. harzianum Rifai–Thr2, hamatum/Bonord/Bainier–Th15) form suspension for 24 h. plants fertilized every 7 days with multi-component Peters Professional Allrounder fertilizer (20:20:20 + microelements) at concentration 0.0%, 0.2%, 0.3%. accelerated cultivar by 2.7–8.7 days, stimulated development buds flowers affected their size. bloomed most intensively had biggest after treatment 0.3% fertilizer. no effect height number shoots regardless concentration, but they leaves. production chlorophyll. They did not affect uptake macroelements, microelements (Zn, Fe, B). higher was, content