Citation
Toh, Liang Su and Khor, Sen Chou and Muhammad Afiq Kamaruzali, . and Mashitah Jusoh, . and Azzami Adam Muhamad Mujab, . and Khalisanni Khalid, . and Fleming, Andrew and Nazmin Yaapar, . (2024) An exploration into “Do-It-Yourself” (DIY) CO₂ enrichment chambers: utilising grey oyster mushroom (Pleurotus pulmonarius (Fr.) Quél) respiration to improve okra (Abelmoschus esculentus L.) seedlings growth. Journal of Tropical Plant Physiology (JTPP) (Malaysia), 16. pp. 26-39. ISSN 1985-0484
Abstract
The endeavour to employ CO₂ from natural sources to improve plant growth is often challenging, especially in tropical climates. While mycelium bags from the mushroom industry can generate CO₂, they need indoor conditions with controlled temperature, high humidity, and low light. These conditions are not present in open fields, leading to low CO₂ production. Inspired by the ancient clay evaporative cooling device called the zeer pot, a new solution was developed to address this problem. The eventual design was a confinement chamber that housed the mycelium bags and the okra seedlings. The chamber conditions were sufficiently conducive for the mycelium bags to produce an ambient CO₂ level of around 800 ppm during the day. The resulting okra seedlings under this high CO₂ concentration of natural origin had a notable increase in overall biomass accumulation (+ 277%), carbon assimilation rate (+103%) as well as improved water use efficiency(+95%) compared to seedlings grown under ambient CO₂ level. These promising findings not only proved the capability of mycelium as a natural CO₂ generator but also as an additional economic potential for the farmers to gain income from the CO₂ enriched crops as well as the harvested mushroom bodies at the time of mycelium bags maturity. Furthermore, this simple innovation opens the avenue for further interdisciplinary research in other agricultural efforts to improve crop yield and quality
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Abstract
The endeavour to employ CO₂ from natural sources to improve plant growth is often challenging, especially in tropical climates. While mycelium bags from the mushroom industry can generate CO₂, they need indoor conditions with controlled temperature, high humidity, and low light. These conditions are not present in open fields, leading to low CO₂ production. Inspired by the ancient clay evaporative cooling device called the zeer pot, a new solution was developed to address this problem. The eventual design was a confinement chamber that housed the mycelium bags and the okra seedlings. The chamber conditions were sufficiently conducive for the mycelium bags to produce an ambient CO₂ level of around 800 ppm during the day. The resulting okra seedlings under this high CO₂ concentration of natural origin had a notable increase in overall biomass accumulation (+ 277%), carbon assimilation rate (+103%) as well as improved water use efficiency(+95%) compared to seedlings grown under ambient CO₂ level. These promising findings not only proved the capability of mycelium as a natural CO₂ generator but also as an additional economic potential for the farmers to gain income from the CO₂ enriched crops as well as the harvested mushroom bodies at the time of mycelium bags maturity. Furthermore, this simple innovation opens the avenue for further interdisciplinary research in other agricultural efforts to improve crop yield and quality
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | okras |
| AGROVOC Term: | oyster mushroom |
| AGROVOC Term: | carbon dioxide |
| AGROVOC Term: | mycelium |
| AGROVOC Term: | chambers of agriculture |
| AGROVOC Term: | experimentation |
| AGROVOC Term: | biomass |
| AGROVOC Term: | plant growth |
| Geographical Term: | Malaysia |
| Depositing User: | Ms. Azariah Hashim |
| Date Deposited: | 11 Feb 2026 03:33 |
| Last Modified: | 11 Feb 2026 03:33 |
| URI: | http://webagris.upm.edu.my/id/eprint/3191 |
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