Aims A study on the effectiveness of replanting in “inter-row” to minimize replant disease in apple orchards was performed focusing on the plant-microorganism relationship. Methods Simulation of a post transplant period with M9 rootstock plantlets was performed in soil samples taken from five third-generation orchards. Plant growth and root health, root colonizing fungi and bacteria of rhizospheric soil were evaluated at the end of the post-transplant simulation. Results Plant growth did not differ across the orchards, but was highest (P > 0.01) in the “inter-row”. Root colonizing fungi composition differed from one orchard to the other, but not between row and inter-row. Fusarium solani and F. oxysporum were the most represented species followed by Cylindrocarpon spp, binucleate Rhizoctonia sp., and Fusarium spp. Cylindrocarpon spp and binucleate Rhizoctonia sp. were pathogenic and occurred everywhere. Rhizosphere bacteria differed across orchards, but their position within the orchards did not. As plant growth response to the row and inter-row varied through the orchards, findings suggest that microbial interaction and pathogen host specificity play a role in plant health. Conclusions Replanting in inter-row can minimize replant disease but potential fungal pathogens are endemic in soil, therefore replanting should be associated with strategies increasing soil suppressiveness in established orchards.
|Autori:||Kelderer, M.;Manici, L.M.;Caputo, F.;Thalheimer, M.|
|Data di pubblicazione:||2012|
|Titolo:||Planting in the ‘inter-row’ to overcome replant disease in apple orchards: a study on the effectiveness of the practice based on microbial indicators|
|Rivista:||PLANT AND SOIL|
|Appare nelle tipologie:||1.1 Articolo in rivista|