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Evaluation of spent mushroom substrate as substitute of peat in Chinese biobeds
AEPI Agro-Environmental Protection Institute, China.
AEPI Agro-Environmental Protection Institute, China.
RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
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2015 (English)In: International Biodeterioration & Biodegradation, ISSN 0964-8305, E-ISSN 1879-0208, Vol. 98, p. 107-112Article in journal (Refereed) Published
Abstract [en]

Biobeds are an effective system for minimising the risk of point-source contamination by pesticides. The original biobed system comprises a clay layer at the bottom, a biomixture layer and a grass layer on top. The composition of the biomixture, which in the original Swedish model consisted of soil: peat: wheat straw (1:1:2 by volume), determines the efficiency of the system. Since the use of peat is not environmentally or economically feasible in China, this study tested the potential of replacing it with a locally available material, spent mushroom substrate (SMS). Three biomixtures containing different SMS (Pleurotus eryngii, Flammulina velutipes and Lentinus edodes) were compared with a biomixture containing peat, as in the original Swedish design, and a control containing soil alone. The fungicide chlorothalonil and the insecticide imidacloprid were used as model pesticides in the tests. Microbial activity (measured as respiration and phenoloxidase and hydrolytic activity) and pesticide dissipation were studied. Microbial activity was higher in the three biomixtures containing SMS than in the original-type biomixture. Among the SMS biomixtures, that containing SMS from L.edodes was the most biologically active. However, pesticide dissipation was comparable in all four biomixtures and significant differences were only found between biomixtures and the soil-alone control. Based on the physicochemical characteristics, biological activity and preliminary results on pesticide degradation, SMS are suitable and can therefore be used as a substitutes for peat.

Place, publisher, year, edition, pages
2015. Vol. 98, p. 107-112
Keywords [en]
Spent mushroom substrate, Biobed, Pesticide degradation, ChlorothalonilImidacloprid, Phenoloxidase
National Category
Agricultural Science, Forestry and Fisheries
Identifiers
URN: urn:nbn:se:ri:diva-2391DOI: 10.1016/j.ibiod.2014.12.008Scopus ID: 2-s2.0-84920903265OAI: oai:DiVA.org:ri-2391DiVA, id: diva2:959980
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2019-07-04Bibliographically approved

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