Influence of biochar and compost on soil properties and tree growth in a tropical urban environment

Research relating to the use of organic amendments on soils has focused largely on agricultural soils, and there is a lack of information worldwide on their efficacy as amendments for urban soil management, especially in tropical urban environments. A pot experiment was conducted to assess the influ...

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Bibliographic Details
Published in:International journal of environmental science and technology (Tehran) 2015-04, Vol.12 (4), p.1303-1310
Main Authors: Ghosh, S, Fern Ow, I, Wilson, B
Format: Article
Language:English
Subjects:
Aquatic Pollution
Biochar
Compost
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Science and Engineering
Original Paper
Samanea saman
Soil Science & Conservation
Suregada multiflora
Tropics
Urban soil
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Research relating to the use of organic amendments on soils has focused largely on agricultural soils, and there is a lack of information worldwide on their efficacy as amendments for urban soil management, especially in tropical urban environments. A pot experiment was conducted to assess the influence of biochar and organic compost on urban soil properties and on tree growth performance in Singapore. Biochar and compost were mixed with topsoil in different proportions, and two urban tree species commonly grown in Singapore ( Samanea saman and Suregada multiflora ) were used. There were significant additional height increments for both the tree species following application of biochar. S. saman exhibited greater stem elongation compared with S. multiflora in response to organic amendments. A significantly higher foliar N content was found in both tree species in biochar-amended treatments along with significant increases in P and K. Increases in soil nutrient concentrations were also observed in combined biochar-compost treatments for both species. Combined compost and biochar had the strongest effects on soils and growth of the two urban tree species examined and applications containing biochar resulted in the most significant soil improvements.
ISSN:1735-1472
1735-2630
DOI:10.1007/s13762-014-0508-0