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Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 496419
Title Organic amendments to improve disease suppressiveness of soils
Author(s) Postma, J.; Nijhuis, E.H.
Source In: Advanced Compost and Biochar Processing: Solution for Economical Phosphorus Recovery Conference. - REFERTIL - p. 11 - 11.
Event Advanced Compost and Biochar Processing: Solution for Economical Phosphorus Recovery Conference, Toledo, 2015-09-17/2015-09-18
Department(s) PRI Bioint Entomology & Disease Management
Publication type Abstract in scientific journal or proceedings
Publication year 2015
Abstract Soil-borne pathogens can cause serious economic damage in agricultural crops.
However, disease resistant cultivars are not always available and chemical control has environmental draw backs. Soil disinfestation as well as preventive pesticide application is often not allowed anymore. Improving plant resilience and enhancing soil suppressiveness against diseases are environmentally friendly strategies to grow healthy crops. The addition of organic (waste) products in soil is one management strategy that supports soil quality as well as soil suppressiveness against certain diseases.
In our research we demonstrated a reduction in Pythium infection in tomato plants when compost was added to potting soil. Disease reduction varied from 30-60% in different experiments. Biochar was less effective in reducing Pythium infection than compost.
However, addition of a microbial inoculant, an antagonistic strain of Pseudomonas chlororaphis, improved suppressiveness of the biochar. These results show that compost as well as the addition of a microbial inoculant to potting soil or supplied in animal bone char, will enhance the disease suppressiveness of the growing system.
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