The potential of Plant Residues and Industrial Sewage Sludge as Organic Fertilizers, and their Effect on Soil pH and Moisture of Acid Sulfate Soil


Citation

Vu, Thi Quyen (2023) The potential of Plant Residues and Industrial Sewage Sludge as Organic Fertilizers, and their Effect on Soil pH and Moisture of Acid Sulfate Soil. Malaysian Journal of Soil Science (MJSS) (Malaysia), 27. pp. 1-7. ISSN 1394-7990

Abstract

Intensive farming is expanding rapidly, making organic fertilizer development vital to achieve sustainable agriculture. Thus, the purpose of this study is to understand the potential of decaying plants and industrial sewage sludge as organic soil amendments. This study was conducted from December 2019 to May 2021 in Ho Chi Minh City. Decaying plants and sewage sludge from wastewater treatment enterprises were collected. Manure and probiotics were also added according to the semi-fermentation method to develop different composting formulas. The quality of fertilizer was evaluated based on national standards. The last step was to observe the compost applications potential in improving acidic soil moisture and soil pH. The study found that the composts containing 70% plant waste + 20% cow manure + 10% dried sludge + microbial (0.25 liters/1m³) met the nutrient criteria of the Vietnamese Government on fertilizer management as follows: pH 6.7, total organic matter 31.08%; total N 2.37%; 5.67% P₂O₅, 8.97% K₂O; humic acid 2.59%; fulvic acid 1.24%; and C:N ratio 11.03. After applying the compost fertilizer (10,000 kg/ha), a significant improvement in acidic sulfate soil pH and moistureholding capacity was recorded compared to the conventional methods of farming.


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Abstract

Intensive farming is expanding rapidly, making organic fertilizer development vital to achieve sustainable agriculture. Thus, the purpose of this study is to understand the potential of decaying plants and industrial sewage sludge as organic soil amendments. This study was conducted from December 2019 to May 2021 in Ho Chi Minh City. Decaying plants and sewage sludge from wastewater treatment enterprises were collected. Manure and probiotics were also added according to the semi-fermentation method to develop different composting formulas. The quality of fertilizer was evaluated based on national standards. The last step was to observe the compost applications potential in improving acidic soil moisture and soil pH. The study found that the composts containing 70% plant waste + 20% cow manure + 10% dried sludge + microbial (0.25 liters/1m³) met the nutrient criteria of the Vietnamese Government on fertilizer management as follows: pH 6.7, total organic matter 31.08%; total N 2.37%; 5.67% P₂O₅, 8.97% K₂O; humic acid 2.59%; fulvic acid 1.24%; and C:N ratio 11.03. After applying the compost fertilizer (10,000 kg/ha), a significant improvement in acidic sulfate soil pH and moistureholding capacity was recorded compared to the conventional methods of farming.

Additional Metadata

[error in script]
Item Type: Article
AGROVOC Term: sewage sludge
AGROVOC Term: inorganic fertilizers
AGROVOC Term: soil pH
AGROVOC Term: composts
AGROVOC Term: composting
AGROVOC Term: fresh solid manure
AGROVOC Term: probiotics
AGROVOC Term: humic acids
Geographical Term: Vietnam
Depositing User: Mr. Khoirul Asrimi Md Nor
Date Deposited: 15 May 2025 02:14
Last Modified: 15 May 2025 02:14
URI: http://webagris.upm.edu.my/id/eprint/2706

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