UPM Institutional Repository

Co-application of red gypsum and sewage sludge on acidic tropical soils.


Ishak, Che Fauziah and Mansor, Nur Hanani and Darus, Siti Zauyah and Abd. Wahid, Samsuri and A., Rozalin (2011) Co-application of red gypsum and sewage sludge on acidic tropical soils. Communications in Soil Science and Plant Analysis, 42 (21). pp. 2561-2571. ISSN 0010-3624; ESSN:1532-2416


The agroenvironmental impact of co-utilization of red gypsum and sewage sludge was investigated. Both laboratory and greenhouse studies were conducted. The treatments were soil + sewage sludge (5% w/w) + red gypsum (0, 2.5, 5, 10, 20, and 40%, w/w). Corn was grown in the greenhouse, and the highest rate of red gypsum application was excluded. The residual calcite in red gypsum was able to increase the pH of the red gypsum–sewage sludge acidic soil system. Hence, gypsum reduced the zinc (Zn) concentrations in the soil solution released by sewage sludge. Phosphorus (P) and potassium (K) were insufficient for corn growth. At the rate of 2.5% red gypsum and 5% sewage sludge application, no dry-matter reduction was observed compared to the control. The uptake of Zn, copper (Cu), and iron (Fe) by the corn plants decreased. Therefore, co-utilization of red gypsum and sewage sludge is a better option than using these by-products separately.

Download File

PDF (Abstract)

Download (182kB) | Preview
Official URL or Download Paper: http://www.tandfonline.com/

Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.1080/00103624.2011.614032
Publisher: Taylor & Francis
Keywords: Acidic soils; Corn; Heavy metals; Red gypsum.
Depositing User: Nur Farahin Ramli
Date Deposited: 28 Nov 2013 23:17
Last Modified: 23 Sep 2015 01:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/00103624.2011.614032
URI: http://psasir.upm.edu.my/id/eprint/23663
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item