Farklı Gübre Kaynakları ve Ekim Sıklığının Organik Buğdayda Kök ve Kök Boğazı Çürüklüğü Etmenlerine Etkisi

The effects of organic fertilizers and sowing density on root and crown rot disease agents of organic wheat were investigated during the 2008-09 seasons; in Erzurum (Turkey) at dry agriculture conditions. Experiment design was factorial with completely randomized block design having 4 replications. Factors were two wheat cultivars (Dogu-88 and Kirik), two sowing density (475 seeds m-2and 625 seeds m-2) and seven fertilizer sources (control, standard inorganic (NP), Bio-Organic, Bio-Organic SR, Leonardit, Organic fertilizer and cattle manure). Alternaria alternata, Arthrinium urticae, Bipolaris sorokiniana, Chaetomium spp., Chrysosporium spp., Cladosporium spp. Curvularia pallescens, Fusarium spp., Microdochium nivale, Mucor spp., Penicillium spp., Rhizopus stolonifer, Clonostachys spp., Ulocladium atrum and sterile mycelia were isolated from crown of organic wheat. Significant differences were not found in the mycoflora among the sowing density. However, there were differences among fertilizer sources compared to the control on root and crown rot disease agents of organic wheat.