"Negative factors, as progressive reduction of organic matter,. salinity excess, low availability of mineral elements and alterations. of microrganisms populations, can favour soil-borne plant. pathogens and lead to “soil sickness” in intensive cultivation systems.. Soil fumigation with methyl bromide has been an effective. control means against soil-borne pathogens, but its use is now. strongly restricted. Alternatives control methods, used alone,. have low effectiveness in comparison with fumigants. Biological. control of soil-borne pathogens can be a valid alternative, however. large-scale application of bio-control agents is often limited by. the lack of a suitable method for their introduction and distribution. in the soil. A key point of our research was to assay widespread. organic amendments (grape marc, poultry manure, fowlmanure. or composted plant residues) as carriers of bio-control. agents effective against important soil-borne pathogens. Activated. amendments were evaluated for their suppressive activity on. the following soil-borne-pathogen\/crop\/antagonist systems:. Pyrenochaeta lycopersici\/tomato\/Streptomyces spp.; Fusarium. oxysporum f.sp. melonis\/melon\/Trichoderma viride; Verticillium. dahliae\/eggplant\/Bacillus licheniformis and B. subtilis; F. oxysporum. f.sp. lycopersici\/tomato\/B. amyloliquefaciens; Phytophthora. nicotianae\/sour orange\/T. harzianum. Blind-trials were carried. out in micro-plot and\/or in greenhouse conditions by adding activated. amendments to soils artificially contaminated with each. tested pathogen. Two amendments, Humus Terra (TERRA. ‘Ricerca e Sviluppo’, Italy) and TerraViva (Distillerie Bonollo,. Italy), were found to be suppressive against the tested diseases. and suitable as carriers of microbial antagonists. They may be. candidate for developing control strategies based on organic. amendments enriched with bio-control agents"
Characterization of microbial antagonists for improving suppressive activity of organic amendments against soil-borne plant diseases
LIMA, Giuseppe;VITULLO, Domenico;
2012-01-01
Abstract
"Negative factors, as progressive reduction of organic matter,. salinity excess, low availability of mineral elements and alterations. of microrganisms populations, can favour soil-borne plant. pathogens and lead to “soil sickness” in intensive cultivation systems.. Soil fumigation with methyl bromide has been an effective. control means against soil-borne pathogens, but its use is now. strongly restricted. Alternatives control methods, used alone,. have low effectiveness in comparison with fumigants. Biological. control of soil-borne pathogens can be a valid alternative, however. large-scale application of bio-control agents is often limited by. the lack of a suitable method for their introduction and distribution. in the soil. A key point of our research was to assay widespread. organic amendments (grape marc, poultry manure, fowlmanure. or composted plant residues) as carriers of bio-control. agents effective against important soil-borne pathogens. Activated. amendments were evaluated for their suppressive activity on. the following soil-borne-pathogen\/crop\/antagonist systems:. Pyrenochaeta lycopersici\/tomato\/Streptomyces spp.; Fusarium. oxysporum f.sp. melonis\/melon\/Trichoderma viride; Verticillium. dahliae\/eggplant\/Bacillus licheniformis and B. subtilis; F. oxysporum. f.sp. lycopersici\/tomato\/B. amyloliquefaciens; Phytophthora. nicotianae\/sour orange\/T. harzianum. Blind-trials were carried. out in micro-plot and\/or in greenhouse conditions by adding activated. amendments to soils artificially contaminated with each. tested pathogen. Two amendments, Humus Terra (TERRA. ‘Ricerca e Sviluppo’, Italy) and TerraViva (Distillerie Bonollo,. Italy), were found to be suppressive against the tested diseases. and suitable as carriers of microbial antagonists. They may be. candidate for developing control strategies based on organic. amendments enriched with bio-control agents"I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
