Citation
Awal M. A., . and Mohd. Haniff Harun, . and Wan Ishak W. I., . and Endan J., . (2004) Indirect estimation of oil palm frond area by using regression equation. [Proceedings Paper]
Abstract
The leaves play an important major role in plant;s life. In oil palm leaf area is one of the most important aspects in its morphological and physiological studies. Precision estimation of leaf area is one of the important issues in oil palm for growth analysis. Leaf area is also important for analysis of canopy structure of the oil palm. Accurate rapid non-destructive simple and reliable approach for determination of leaf area in oil palm is essential. In this study a regression models for accurate estimation of leaf area from simple measured leaves length and middle width were described and two models for frond area measurement were proposed. The regression models were l A 75.5I7D -45.411 with co-relation coefficient r0.91 and standard error 1.62. ii A 28.845 D 1.633 with co-relation coefficient r 0.93 and standard error 0.031 and iii A 0.0286 L 2.0142 with co-relation coefficient r 0.93 and standard error 0.26 where A D and L represent area cm width cm and length cm of the leaflets. The proposed frond area measurement models were a TFA 0.58 PLA with co-relation coefficient r 0.99 and standard error of estimation coefficient .007431 and b TFA 0.467 PRLA with co-relation coefficient r 0.99 and standard error of estimation coefficient 0.00536 where TFA PLA and PRLA represents true frond area predict leaf area and predict rectangular leaf area in m. Statistical analysis indicates a high degree of association R 0.99 and the low standard errors of estimation were 0.007431 and 0.00536 on model ;a; and ;b; respectively. Model ;b; was more simple and easiest in terms of leaflet measurement.
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Abstract
The leaves play an important major role in plant;s life. In oil palm leaf area is one of the most important aspects in its morphological and physiological studies. Precision estimation of leaf area is one of the important issues in oil palm for growth analysis. Leaf area is also important for analysis of canopy structure of the oil palm. Accurate rapid non-destructive simple and reliable approach for determination of leaf area in oil palm is essential. In this study a regression models for accurate estimation of leaf area from simple measured leaves length and middle width were described and two models for frond area measurement were proposed. The regression models were l A 75.5I7D -45.411 with co-relation coefficient r0.91 and standard error 1.62. ii A 28.845 D 1.633 with co-relation coefficient r 0.93 and standard error 0.031 and iii A 0.0286 L 2.0142 with co-relation coefficient r 0.93 and standard error 0.26 where A D and L represent area cm width cm and length cm of the leaflets. The proposed frond area measurement models were a TFA 0.58 PLA with co-relation coefficient r 0.99 and standard error of estimation coefficient .007431 and b TFA 0.467 PRLA with co-relation coefficient r 0.99 and standard error of estimation coefficient 0.00536 where TFA PLA and PRLA represents true frond area predict leaf area and predict rectangular leaf area in m. Statistical analysis indicates a high degree of association R 0.99 and the low standard errors of estimation were 0.007431 and 0.00536 on model ;a; and ;b; respectively. Model ;b; was more simple and easiest in terms of leaflet measurement.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. QK710.2 M239 2004 Call Number |
| AGROVOC Term: | Oil palm |
| AGROVOC Term: | Leaf area |
| AGROVOC Term: | Regression analysis |
| AGROVOC Term: | Leaf canopy |
| AGROVOC Term: | Tree canopy |
| AGROVOC Term: | Tree and stand measurement |
| AGROVOC Term: | Plant morphology |
| AGROVOC Term: | Plant physiology |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:15 |
| URI: | http://webagris.upm.edu.my/id/eprint/12803 |
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