Cover Image

Effects of biochar amendment on soil respiration

The objectives of this study were to quantify the effects of biochar amendment on soil respiration rate and to investigate the relationship between soil temperature, moisture content and pH on soil respiration. Five rice husk biochar treatments (0, 1, 5, 10 and 20 t ha�¹) were applied on soil plo...

Full description

Saved in:
Bibliographic Details
Main Author: Lee, Yin Yin
Format: Academic Exercise
Language:English
Published: 2011
Subjects:
SB Plant culture
Online Access:https://eprints.ums.edu.my/id/eprint/17387/1/Effects_of_biochar_amendment_on.pdf
https://eprints.ums.edu.my/id/eprint/17387/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.ums.eprints.17387
record_format eprints
spelling my.ums.eprints.173872017-10-16T04:16:55Z https://eprints.ums.edu.my/id/eprint/17387/ Effects of biochar amendment on soil respiration Lee, Yin Yin SB Plant culture The objectives of this study were to quantify the effects of biochar amendment on soil respiration rate and to investigate the relationship between soil temperature, moisture content and pH on soil respiration. Five rice husk biochar treatments (0, 1, 5, 10 and 20 t ha�¹) were applied on soil plots in a completely randomized design (CRD) at the experimental field of the School of Sustainable Agriculture, Universiti Malaysia Sabah (6°02' N, 116°07' E). Each treatment was replicated three times resulting in 15 sample plots, each measuring 1 m² in size. Soil respiration data were collected using an UB100 Automated Soil CO₂ Flux System (LI-Cor Inc., Lincoln, NE, USA). Soil temperature and soil moisture data were measured with a soil thermometer and soil moisture meter (SM100) respectively. Data was recorded once a week in the morning (6.00 a.m.-8.00 a.m.) and evening section (5.00 p.m.-7.00 p.m.). The soil respiration for the 1 t ha-1 and 5 t ha�¹) biochar treatments were significantly different in this study. The maximum rate of soil respiration produced from 5 t ha�¹) of biochar amendment was approximately 9.45 t CO₂ ha�¹) yr�¹. Soil temperature was positively correlated with soil respiration. Increased soil temperature enhanced the soil respiration especially above 30°C. The soil moisture showed an inverse relationship with soil respiration. Rainfall event and distribution affected the results of soil temperature and moisture and hence soil respiration. Higher rainfall increased the soil moisture content but also reduced soil respiration significantly. The 1 t ha�¹) biochar treatment increased the soil pH but the higher biochar treatments (10 and 20 t ha�¹) significantly increased soil acidity. In conclusion, the 5 t ha�¹) biochar amendment was effective in increasing soil respiration and influenced soil properties such as soil pH and moisture which will affect agriculture activities of farmers. 2011 Academic Exercise NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/17387/1/Effects_of_biochar_amendment_on.pdf Lee, Yin Yin (2011) Effects of biochar amendment on soil respiration. Universiti Malaysia Sabah. (Unpublished)
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
topic SB Plant culture
spellingShingle SB Plant culture
Lee, Yin Yin
Effects of biochar amendment on soil respiration
description The objectives of this study were to quantify the effects of biochar amendment on soil respiration rate and to investigate the relationship between soil temperature, moisture content and pH on soil respiration. Five rice husk biochar treatments (0, 1, 5, 10 and 20 t ha�¹) were applied on soil plots in a completely randomized design (CRD) at the experimental field of the School of Sustainable Agriculture, Universiti Malaysia Sabah (6°02' N, 116°07' E). Each treatment was replicated three times resulting in 15 sample plots, each measuring 1 m² in size. Soil respiration data were collected using an UB100 Automated Soil CO₂ Flux System (LI-Cor Inc., Lincoln, NE, USA). Soil temperature and soil moisture data were measured with a soil thermometer and soil moisture meter (SM100) respectively. Data was recorded once a week in the morning (6.00 a.m.-8.00 a.m.) and evening section (5.00 p.m.-7.00 p.m.). The soil respiration for the 1 t ha-1 and 5 t ha�¹) biochar treatments were significantly different in this study. The maximum rate of soil respiration produced from 5 t ha�¹) of biochar amendment was approximately 9.45 t CO₂ ha�¹) yr�¹. Soil temperature was positively correlated with soil respiration. Increased soil temperature enhanced the soil respiration especially above 30°C. The soil moisture showed an inverse relationship with soil respiration. Rainfall event and distribution affected the results of soil temperature and moisture and hence soil respiration. Higher rainfall increased the soil moisture content but also reduced soil respiration significantly. The 1 t ha�¹) biochar treatment increased the soil pH but the higher biochar treatments (10 and 20 t ha�¹) significantly increased soil acidity. In conclusion, the 5 t ha�¹) biochar amendment was effective in increasing soil respiration and influenced soil properties such as soil pH and moisture which will affect agriculture activities of farmers.
format Academic Exercise
author Lee, Yin Yin
author_facet Lee, Yin Yin
author_sort Lee, Yin Yin
title Effects of biochar amendment on soil respiration
title_short Effects of biochar amendment on soil respiration
title_full Effects of biochar amendment on soil respiration
title_fullStr Effects of biochar amendment on soil respiration
title_full_unstemmed Effects of biochar amendment on soil respiration
title_sort effects of biochar amendment on soil respiration
publishDate 2011
url https://eprints.ums.edu.my/id/eprint/17387/1/Effects_of_biochar_amendment_on.pdf
https://eprints.ums.edu.my/id/eprint/17387/
_version_ 1760229307978874880
score 13.211869

Similar Items