A litterbag study : Decomposition rate and C/N ratio of annual crop biomass residues on an ultisols in Natar Village South Lampung Indonesia

Lumbanraja Jamalam, . and Barus Junita, . and Sudarsono Hamim, . and Dermiyati, . A litterbag study : Decomposition rate and C/N ratio of annual crop biomass residues on an ultisols in Natar Village South Lampung Indonesia. pp. 387-403. ISSN 1511-3701

To evaluate the decomposition rate and the C/N ratio of biomass residues from several crops that are the main food sources in Indonesia a litterbag study was conducted from February to November 2016 on ultisols in Natar Village South Lampung Indonesia. There were four types of crops biomass residues used i.e. maize stovers rice straws shoots and leaves of cassava and soybean stovers in the form of fresh or compost. A fifty gram dry weight of biomass was put into a litterbag placed above the ground and at a depth of about 10-20 cm and incubated for nine months. The remaining biomass (dry weight) the content of Organic-C Total-N and C/N levels of the remaining biomass in the litterbag were observed every month until nine months. The dry weight of biomass was obtained by an oven dried at 70C for approximately 48 hours until reached the constant weight. The decomposition rates were measured as (k) ln (X/Xo)/t. Results showed that the decomposition rate of the biomass residues of the four crops were different. The shoots and leaves of cassava biomass were most rapidly decomposed (k -0.2830) and significantly different from others followed by maize stover (k-0.2066) rice straw (k -0.1924) and soybean stover (k -0.1675). Biomass of fresh or compost form and litterbag placement generally affected the decomposition rate of biomass residues.

Full text available from: Official URL: http://www.pertanika.upm.edu.my/Pertanika%20PAPERS...

Abstract

To evaluate the decomposition rate and the C/N ratio of biomass residues from several crops that are the main food sources in Indonesia a litterbag study was conducted from February to November 2016 on ultisols in Natar Village South Lampung Indonesia. There were four types of crops biomass residues used i.e. maize stovers rice straws shoots and leaves of cassava and soybean stovers in the form of fresh or compost. A fifty gram dry weight of biomass was put into a litterbag placed above the ground and at a depth of about 10-20 cm and incubated for nine months. The remaining biomass (dry weight) the content of Organic-C Total-N and C/N levels of the remaining biomass in the litterbag were observed every month until nine months. The dry weight of biomass was obtained by an oven dried at 70C for approximately 48 hours until reached the constant weight. The decomposition rates were measured as (k) ln (X/Xo)/t. Results showed that the decomposition rate of the biomass residues of the four crops were different. The shoots and leaves of cassava biomass were most rapidly decomposed (k -0.2830) and significantly different from others followed by maize stover (k-0.2066) rice straw (k -0.1924) and soybean stover (k -0.1675). Biomass of fresh or compost form and litterbag placement generally affected the decomposition rate of biomass residues.

[error in script]

Item Type:	Article
AGROVOC Term:	Crop residues
AGROVOC Term:	Agricultural wastes
AGROVOC Term:	Decomposition
AGROVOC Term:	Containers
AGROVOC Term:	Biomass
AGROVOC Term:	Nitrogen
AGROVOC Term:	Carbon
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8141

Actions (login required)

View Item