The Effects of Bioinoculants Based on Mycorrhizal and Trichoderma spp. Fungi in an Apple Tree Nursery under Replantation Conditions

Both mycorrhizal and Trichoderma spp. fungi are known for antagonistic effects against certain biological pathogens causing apple replant disease (ARD). The aim of this study was to assess the effectiveness bioinoculants based on endomycorrhizal properties soil as well parameters tree growths in a fruit nursery under replantation conditions. A two-year experiment conducted Jonagold trees grafted M.9 rootstock western Poland. were planted soil—from areas used production trees, crop rotation soil, that had not been purposes before. inoculum preparations containing applied soil. Biological growth aerial underground parts assessed. enzymatic (dehydrogenases protease) respiratory activity significantly lower than grew worse when exposed ARD mitigating shown. treatment mycorrhization application increased root system (including leaves) much better after combined use both types received fungal treatment.