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Preplant Soil Treatments Influence Tree Performance and Nematode Dynamics in Replanted Cherry Orchards
Ali Yaghoubi1, Razieh Yazdani1, Emilie Cole1
1Department of Entomology, Michigan State University, East Lansing, MI 48824, U.S.A.
Plant Disease
|October 11, 2024
Summary
Soil fumigation improved cherry tree establishment and suppressed nematodes short-term. Organic amendments and fluopyram (Velum Prime) offered longer-term nematode control, enhancing orchard soil health.
Area of Science:
- Horticulture
- Nematology
- Soil Science
Background:
- Replanted orchards often suffer from replant disease, impacting tree establishment and productivity.
- Nematodes, particularly *Pratylenchus penetrans*, are key contributors to replant issues in cherry orchards.
Purpose of the Study:
- To evaluate preplant soil management strategies for cherry replant sites.
- To assess impacts on cherry tree growth and soil nematode community dynamics.
Main Methods:
- Field study over two years on cherry cultivars 'Emperor Francis' and 'Ulster' on 'Mahaleb' rootstock.
- Investigated soil fumigation (Telone C-35), nematicide (Velum Prime), and organic amendments (Seed Starter 101, Dairy Doo compost, straw mulch).
Main Results:
- Telone C-35 significantly increased tree size in the first year but provided only short-term nematode suppression.
- Velum Prime maintained *P. penetrans* reproduction factors below one throughout both years.
- Organic amendments reduced *P. penetrans* reproduction in the first year and increased beneficial nematode reproduction.
Conclusions:
- Soil fumigation aids initial tree establishment and offers temporary nematode control.
- Fluopyram (Velum Prime) provides sustained suppression of *P. penetrans*.
- Integrated soil management approaches may offer long-term benefits for cherry replant sites.
