Inhibition of Phytophthora cinnamomi mycelial growth with stabilised hydrogen peroxide

• DOI: 10.1007/s13313-023-00908-w
• Publication Date: 2023-03-01T09:03:03Z
• Authors: Laura Mannion; Paul Thomas; Kerry Walsh; Ron Balsys; Sandrine Makiela; Surya Bhattarai
• Keywords: Phytophthora cinnamomi; Growth inhibition

Abstract The efficacy of hydrogen peroxide (H 2 O ) was evaluated for the inhibition mycelial growth Phytophthora cinnamomi in vitro . infects many crops globally causing root, collar and crown rot, resulting significant economic losses producers. Two 30% (w/v) H products, each stabilised with a different concentration 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP) (3% versus 0.003% w/v) were compared to determine most efficacious as well potential interactive effects stabilising compound. Inhibition P. by amending potato dextrose agar media (PDA) range concentrations test solutions. biocidal activity enhanced higher HEDP. Concentrations from 6.25 mL/L product 3% HEDP provided 100% Neither HEDP, nor stabiliser without 2, achieved comparable inhibition. Our results highlight an opportunity expand use products developed cleaning drip irrigation emitters include control spp potentially other waterborne plant pathogens.