Influence of Soil Properties on Methane Production Potential from Wetland Rice Field in Java

Setyanto, Prihasto (2000) Influence of Soil Properties on Methane Production Potential from Wetland Rice Field in Java. Masters thesis, Universiti Pertanian Malaysia.

[img] PDF
1075Kb

Abstract

This study was conducted with the main objective of studying the emission and production potential of methane (CH4) from different soil types of wetland rice field and determining the controlling soil characteristics affecting methane production. The specific objectives are (i) to determine the best time in the day for manual sampling of CH4 gas in the field, (ii) to measure CH4 fluxes and total emission from three rice fields under field conditions, during the wet and dry seasons, and (iii) to determine the ability of some soils in Java to produce methane from its indigenous and added C source. Two experiments were conducted. The first was a field experiment. Three top soils, classified as brown Regosol, red Latosol and dark brown Alluvial, were placed in a wooden micro-plots lined with plastic sheets and planted with IR 64-rice variety. The soils received continuous irrigation with 5cm ponding above the soil throughout the growing season. A (l m x 1 m x 1 m) plexi-glass chamber was placed on each of the micro-plots to measure daily CH4 flux. The experiment was conducted for two seasons i.e. dry and wet seasons. The Eh and pH changes were recorded regularly every four days. Results of the experiment show that the emission of methane from the soils reached the highest peak at 40 days after transplanting (primordial stage). The emissions declined after they reached the early flowering stage, and drops to the lowest level until the plots were drained. There were no significant differences in grain yield between the three soils from two seasons of observation. Dark brown Alluvial (156. 1 kg CHJha/year) produced the highest emission followed by brown Regosol (142.2 kg CHJha/year) and red Latosol (39.6 kg CHJha/year). Reducing CRt emissions while maintaining or enhancing yield requires information on CRt fluxes from a wide range of ecosystems and climatic zones. An optimal less-intensive sampling strategy with the use of manually operated chamber to measure daily CRt flux is required. Result from this study suggests that gas sampling using the chamber at 1100 his the best time to represent the daily flux variation observed throughout the growing season.

Item Type:Thesis (Masters)
Subject:Methane - Java (Indonesia)
Chairman Supervisor:Dr. Rosenani Abu Bakar
Call Number:FP 2000 9
Faculty or Institute:Faculty of Agriculture
ID Code:10514
Deposited By: Mohd Nezeri Mohamad
Deposited On:27 Apr 2011 03:46
Last Modified:27 Apr 2011 03:47

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 27 Apr 2011 03:46.

View statistics for "Influence of Soil Properties on Methane Production Potential from Wetland Rice Field in Java"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.