A description of open top chamber system for oil palm carbon dioxide enrichment

A'fifah A. R., . and Kho L. K., . and Haniff M. H., . and Amanina N. S., . and Linatoc A. C., . A description of open top chamber system for oil palm carbon dioxide enrichment. pp. 657-661. ISSN 1511-2780

Open Top Chamber (OTC) is one of the techniques to study plant responses to elevated carbon dioxide(CO‚‚) concentrations. A study on the effects of CO‚‚ enrichment on oil palm growth physiology and yield using OTC method was conducted at the Malaysian Palm Oil Board (MPOB) Research Station in Kluang Johor Malaysia. Oil palm clones P164 were cultivated in four OTC each with 9 m diameter and 10 m high. The OTC consists of a concrete structure with transparent multi-wall sheets. It has a truncated top for air aversion and to prevent CO‚‚ dilution within the chamber by outside air. The CO‚‚ gas was injected from nozzles mounted on the inner wall. The OTC was able to maintain a higher CO‚‚ level inside the OTC than ambient level. Air temperature inside the OTC was slightly higher than ambient while relative humidity and photosynthetically active radiation (PAR) inside the OTC were both slightly lower than ambient. A comparison of parameters measured inside the OTC and ambient provides a measure of the chamber effects. However it could have either positive or negative effect on plant growth. The OTC method has some limitations and is only suitable for studying individual plant physiological responses to elevated CO‚‚.

Full text available from: Official URL: http://jopr.mpob.gov.my/wp-content/uploads/2019/12...

Abstract

Open Top Chamber (OTC) is one of the techniques to study plant responses to elevated carbon dioxide(CO‚‚) concentrations. A study on the effects of CO‚‚ enrichment on oil palm growth physiology and yield using OTC method was conducted at the Malaysian Palm Oil Board (MPOB) Research Station in Kluang Johor Malaysia. Oil palm clones P164 were cultivated in four OTC each with 9 m diameter and 10 m high. The OTC consists of a concrete structure with transparent multi-wall sheets. It has a truncated top for air aversion and to prevent CO‚‚ dilution within the chamber by outside air. The CO‚‚ gas was injected from nozzles mounted on the inner wall. The OTC was able to maintain a higher CO‚‚ level inside the OTC than ambient level. Air temperature inside the OTC was slightly higher than ambient while relative humidity and photosynthetically active radiation (PAR) inside the OTC were both slightly lower than ambient. A comparison of parameters measured inside the OTC and ambient provides a measure of the chamber effects. However it could have either positive or negative effect on plant growth. The OTC method has some limitations and is only suitable for studying individual plant physiological responses to elevated CO‚‚.

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Item Type:	Article
AGROVOC Term:	Oil palm
AGROVOC Term:	Field experimentation
AGROVOC Term:	Controlled environment
AGROVOC Term:	Carbon dioxide enrichment
AGROVOC Term:	Growth
AGROVOC Term:	Plant physiology
AGROVOC Term:	Crop yield
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8789

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