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Article

Effective Placement Methods of Vermicompost Application in Urban Tree Species: Implications for Sustainable Urban Afforestation

1
Department of Environment and Forest Resources, Chungnam National University, Daejeon 34134, Korea
2
Department of Forest Biological Sciences, University of the Philippines, Los Baños, College 4031, Philippines
3
Institute of Agricultural Science in College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134, Korea
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(14), 5822; https://doi.org/10.3390/su12145822
Received: 26 May 2020 / Revised: 24 June 2020 / Accepted: 14 July 2020 / Published: 20 July 2020
Knowledge on growth and nutrient uptake characteristics of urban trees and effective strategies to grow trees can help accomplish the goal of urban afforestation initiatives in a sustainable way. Thus, the study investigated the effects of different vermicompost (VC) application placements on the growth and nutrient uptake of three contrasting tree species (fast-growing Betula platyphylla and Larix kaempferi and slow-growing Chamaecyparis obtusa) to provide implications for growing tree stocks for sustainable urban afforestation programs. Five placement methods were used in the greenhouse trial: no fertilization (CON), surface placement (VCs), subsurface placement at 6-cm depth (VCc), bottom placement (35-cm depth (VCb)), and mixed with soil (VCm). We measured the growth parameters such as height, root collar diameter (RCD), and biomass and analyzed foliar nutrient concentrations in response to different placement treatments of VC. Relative height growth was the highest at VCc (132% (B. platyphylla), 114% (L. kaempferi)) and VCs ((57%) C. obtusa). Significant improvement in aboveground and belowground biomass growth of all species at VCs and VCc compared to the other treatments was also observed. Generally, VC treatments significantly increased N concentration compared to CON in all species. In conclusion, fertilizing the fast- and slow-growing urban tree species using VCs and/or VCc is relevant to growing high quality planting stocks for sustainable urban afforestation purposes. View Full-Text
Keywords: biomass allocation; fast-growing species; fertilizer placement; organic fertilizer; vector analysis; vermicomposting biomass allocation; fast-growing species; fertilizer placement; organic fertilizer; vector analysis; vermicomposting
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MDPI and ACS Style

Dao, H.T.T.; Seo, J.M.; Hernandez, J.O.; Han, S.H.; Youn, W.B.; An, J.Y.; Park, B.B. Effective Placement Methods of Vermicompost Application in Urban Tree Species: Implications for Sustainable Urban Afforestation. Sustainability 2020, 12, 5822. https://doi.org/10.3390/su12145822

AMA Style

Dao HTT, Seo JM, Hernandez JO, Han SH, Youn WB, An JY, Park BB. Effective Placement Methods of Vermicompost Application in Urban Tree Species: Implications for Sustainable Urban Afforestation. Sustainability. 2020; 12(14):5822. https://doi.org/10.3390/su12145822

Chicago/Turabian Style

Dao, Huong Thi Thuy, Jeong Min Seo, Jonathan O. Hernandez, Si Ho Han, Woo Bin Youn, Ji Young An, and Byung Bae Park. 2020. "Effective Placement Methods of Vermicompost Application in Urban Tree Species: Implications for Sustainable Urban Afforestation" Sustainability 12, no. 14: 5822. https://doi.org/10.3390/su12145822

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