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- Title
Assessment of Agro-Ecological Apple Replant Disease (ARD) Management Strategies: Organic Fertilisation and Inoculation with Mycorrhizal Fungi and Bacteria.
- Authors
Cavael, Ulrike; Lentzsch, Peter; Schwärzel, Hilmar; Eulenstein, Frank; Tauschke, Marion; Diehl, Katharina; Losciale, Pasquale; Corelli-Grappadelli, Luca; Manfrini, Luigi; Morandi, Brunella
- Abstract
Apple replant disease (ARD) impacts the economic yield of orchards by physiological and morphological suppression of apple trees on replanted soils. The complexity of replant disease caused by a plethora of biological interactions and physical properties of the soil requires complex management strategies to mitigate these effects. Based on expert recommendations, we selected two management strategies linked to agroecological principles of (a) organic fertilisation with a specific mulch composition (MDK) and (b) biofertilisation with arbuscular mycorrhizal and bacterial strains (AMFbac), applied by a composition of existing products. For both management strategies we provide a proof-of-concept, by pot and field experiments. Both treatments have the potential to mitigate ARD effects on plant vigour. ARD effect was fully mitigated by MDK treatment in the short-term (one year) and was mitigated by up to 29% after seven years of MDK treatment (long-term). MDK provides an additional substrate for root growth. AMFbac has the potential to mitigate ARD effects on plant vigour but with non-replicable plant-beneficial effects in its current form of application. Thereby our results show a principal potential to mitigate economic effects but not to overcome replant disease inducing effects. While the MDK treatment is found resource intensive but reliable, the AMFbac treatment was found more user-friendly.
- Subjects
VESICULAR-arbuscular mycorrhizas; VACCINATION; ROOT growth; MYCORRHIZAL fungi; ENVIRONMENTAL geology; APPLE orchards; BACTERIA; SOIL management
- Publication
Agronomy, 2021, Vol 11, Issue 2, p272
- ISSN
2073-4395
- Publication type
Article
- DOI
10.3390/agronomy11020272