Vol. 50 No. 3 (2011)
Research Papers

Ca-Lignosulphonate and sclerotial viability of Sclerotinia sclerotiorum

MATTEO MONTANARI
university of Bologna

Published 2012-01-09

How to Cite

[1]
M. MONTANARI and G. INNOCENTI, “Ca-Lignosulphonate and sclerotial viability of Sclerotinia sclerotiorum”, Phytopathol. Mediterr., vol. 50, no. 3, pp. 384–391, Jan. 2012.

Abstract

Lignosulphonates, low cost by-products of the pulping process, have shown suppressive effects against some diseases caused by soil-borne pathogens. In this study, the effect of 1.5% v/v calcium lignosulphonate (Ca-Ls) amendment to two commercial potting mixes (peat + coconut fibres; PC; and municipal compost + peat + pumice; MCPP) on the viability of Sclerotinia sclerotiorum sclerotia was investigated. Sclerotia were buried in the Ca-Ls amended substrates for 30 days. Non-amended PC and MCPP, sterile sand and sterile PC with and without Ca-Ls were used as controls. The viability of sclerotia recovered from PC and MCPP amended with Ca-Ls was reduced by 50 and 42% respectively compared to control treatments. Ca-Ls amendment decreased sclerotial viability by enhancing the activity of the indigenous mycoparasitic fungi, Fusarium oxysporum, Mucor spp. and Trichoderma spp. The biocontrol ability of Ca-Ls against sclerotia was due to the stimulation of microbial activity and is, therefore, strictly dependent on the microbial composition of the substrate.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...