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Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments

Understanding of N mineralization dynamics of frequently available organic amendments in the tea (Camellia sinensis (L.) O. Kuntze) ecosystem has greater importance in land restoration. Hence, this study focused on assessing the effects of organic amendments on N mineralization and soil quality impr...

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Main Authors: Liyanage, Mahesh, M. Hanafi, Mohamed, Sulaiman, Muhammad Firdaus, Ismail, Roslan, Gunaratne, Gamini Perera, Dharmakeerthi, Randombage Saman, Rupasinghe, Geethika, Mayakaduwa, Amoda Priyangi
Format: Article
Published: Instituto de Investigaciones Agropecuarias 2021
Online Access:http://psasir.upm.edu.my/id/eprint/96511/
https://www.scielo.cl/scielo.php?pid=S0718-58392022000200199&script=sci_arttext
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spelling my.upm.eprints.965112023-02-03T02:46:36Z http://psasir.upm.edu.my/id/eprint/96511/ Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments Liyanage, Mahesh M. Hanafi, Mohamed Sulaiman, Muhammad Firdaus Ismail, Roslan Gunaratne, Gamini Perera Dharmakeerthi, Randombage Saman Rupasinghe, Geethika Mayakaduwa, Amoda Priyangi Understanding of N mineralization dynamics of frequently available organic amendments in the tea (Camellia sinensis (L.) O. Kuntze) ecosystem has greater importance in land restoration. Hence, this study focused on assessing the effects of organic amendments on N mineralization and soil quality improvement in tea growing soil. Garden compost (CMP), Gliricidia (Gliricidia sepium (Jacq.)) leaves (GLI), charged tea waste biochar (CBC), tea waste (TW), and tea waste biochar without charging (RBC) were incubated with soil at a rate of 186 mg N kg-1. Incubated soils were analyzed periodically for soil pH, available NO3 --N, NH4 +-N, soil P, and S for 120-d. Microbial biomass C (MBC), protease, urease, phosphatase, and dehydrogenase activities were determined at the end of the incubation. All amendments showed different N mineralization patterns. Gliricidia, CMP, and TW released N by 94%, 43%, and 24%, respectively. Gliricidia showed the highest peak of NH4 +-N after 21-d incubation, depicting rapid ammonification. Charged BC and RBC showed N immobilization throughout the incubation period, which finally amounted to 12% and 17%, respectively. Gliricidia showed 0.79 mg d-1 maximum N mineralization rate and 150 mg kg-1 total mineralizable N. The N mineralization was sequenced as GLI > CMP > TW > CBC > RBC. All amendments showed more than 45% increase in MBC, where Gliricidia gave the highest (146%) compared to the control. Application of CBC promotes all enzyme activities by > 90% over control. In conclusion, GLI meets the immediate plant N requirement, and CBC significantly improves the degraded soil quality. Instituto de Investigaciones Agropecuarias 2021 Article PeerReviewed Liyanage, Mahesh and M. Hanafi, Mohamed and Sulaiman, Muhammad Firdaus and Ismail, Roslan and Gunaratne, Gamini Perera and Dharmakeerthi, Randombage Saman and Rupasinghe, Geethika and Mayakaduwa, Amoda Priyangi (2021) Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments. Chilean Journal of Agricultural Research, 82 (2). pp. 1-11. ISSN 0718-5839 https://www.scielo.cl/scielo.php?pid=S0718-58392022000200199&script=sci_arttext 10.4067/S0718-58392022000200199
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Understanding of N mineralization dynamics of frequently available organic amendments in the tea (Camellia sinensis (L.) O. Kuntze) ecosystem has greater importance in land restoration. Hence, this study focused on assessing the effects of organic amendments on N mineralization and soil quality improvement in tea growing soil. Garden compost (CMP), Gliricidia (Gliricidia sepium (Jacq.)) leaves (GLI), charged tea waste biochar (CBC), tea waste (TW), and tea waste biochar without charging (RBC) were incubated with soil at a rate of 186 mg N kg-1. Incubated soils were analyzed periodically for soil pH, available NO3 --N, NH4 +-N, soil P, and S for 120-d. Microbial biomass C (MBC), protease, urease, phosphatase, and dehydrogenase activities were determined at the end of the incubation. All amendments showed different N mineralization patterns. Gliricidia, CMP, and TW released N by 94%, 43%, and 24%, respectively. Gliricidia showed the highest peak of NH4 +-N after 21-d incubation, depicting rapid ammonification. Charged BC and RBC showed N immobilization throughout the incubation period, which finally amounted to 12% and 17%, respectively. Gliricidia showed 0.79 mg d-1 maximum N mineralization rate and 150 mg kg-1 total mineralizable N. The N mineralization was sequenced as GLI > CMP > TW > CBC > RBC. All amendments showed more than 45% increase in MBC, where Gliricidia gave the highest (146%) compared to the control. Application of CBC promotes all enzyme activities by > 90% over control. In conclusion, GLI meets the immediate plant N requirement, and CBC significantly improves the degraded soil quality.
format Article
author Liyanage, Mahesh
M. Hanafi, Mohamed
Sulaiman, Muhammad Firdaus
Ismail, Roslan
Gunaratne, Gamini Perera
Dharmakeerthi, Randombage Saman
Rupasinghe, Geethika
Mayakaduwa, Amoda Priyangi
spellingShingle Liyanage, Mahesh
M. Hanafi, Mohamed
Sulaiman, Muhammad Firdaus
Ismail, Roslan
Gunaratne, Gamini Perera
Dharmakeerthi, Randombage Saman
Rupasinghe, Geethika
Mayakaduwa, Amoda Priyangi
Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments
author_facet Liyanage, Mahesh
M. Hanafi, Mohamed
Sulaiman, Muhammad Firdaus
Ismail, Roslan
Gunaratne, Gamini Perera
Dharmakeerthi, Randombage Saman
Rupasinghe, Geethika
Mayakaduwa, Amoda Priyangi
author_sort Liyanage, Mahesh
title Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments
title_short Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments
title_full Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments
title_fullStr Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments
title_full_unstemmed Consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments
title_sort consequences of nitrogen mineralization dynamics for soil health restoration of degraded tea-growing soil using organic amendments
publisher Instituto de Investigaciones Agropecuarias
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/96511/
https://www.scielo.cl/scielo.php?pid=S0718-58392022000200199&script=sci_arttext
_version_ 1758579865360007168
score 13.239859

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