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# Chestnut trunk injections suppressed infection but damaged some saplings
- URL: https://intelligence.wildlandseco.com/2026-11-03-chestnut-trunk-injections-suppressed-infection-but-damaged-some-saplings/
- Published: 2026-11-03T14:18:54.000Z
- Updated: 2026-11-03T14:18:54.000Z
- Description: A two-year sapling trial revealed a treatment-dose tradeoff in protecting chestnut against Phytophthora.
- Author: Benjamin Worlund
- Tags: restoration, Land, Wildlife, #ecological-intelligence, #brief-2026-11-03, #global-radar, #peer-reviewed, #geo-europe

Evidence

Peer-reviewed

Geography

Experimental chestnut saplings, Spain

System

Chestnut forest health; oomycete disease

## WHAT THE EVIDENCE SAYS

Fifty Castanea sativa saplings were given fosetyl-Al by injection at different doses or a soil treatment, then challenged with Phytophthora cinnamomi. Injected groups showed shorter necrotic lesions and less root infection, but phytotoxic leaf injury increased with dose and two high-dose plants died.

## WHY IT MATTERS / OUR READ

Intervention success should measure unintended tree injury alongside pathogen suppression, before moving treatments into restoration practice.

## CAVEATS / UNCERTAINTY

Young saplings under semi-controlled challenge, not mature wild trees. Reported model-derived minimum doses are not field instructions.

## SOURCE

Serrano-Pérez et al. · European Journal of Plant Pathology (3 Nov 2026)  
[View original evidence ↗](https://doi.org/10.1007/s10658-026-03331-1?ref=intelligence.wildlandseco.com)

From the Morning Brief · 2026-11-03

[Read the full Morning Brief →](https://intelligence.wildlandseco.com/morning-brief-2026-11-03/)