Relation between leaf area and dimensions of selected medicinal plants

C. Çirak, M. S. Odabaş, B. Sağlam and A. K. Ayan
Additional contact information
C. Çirak: Faculty of Agriculture, Department of Agronomy, University of Ondokuz Mayis, Kurupelit, Samsun, Turkey
M. S. Odabaş: Faculty of Agriculture, Department of Agronomy, University of Ondokuz Mayis, Kurupelit, Samsun, Turkey
B. Sağlam: Faculty of Agriculture, Department of Agronomy, University of Ondokuz Mayis, Kurupelit, Samsun, Turkey
A. K. Ayan: The High School of Profession of Bafra, University of Ondokuz Mayis, Samsun, Turkey

Research in Agricultural Engineering, 2005, vol. 51, issue 1, 13-19

Abstract: In this research, leaf area prediction models were developed for some leaf-used medicinal plants namely Calamintha nepeta, Datura stromonium, Melissa officinalis, Mentha piperita, Nerium oleander, Origanum onites and Urtica dioica growing wild in Black Sea region of Turkey. Lamina width, length and leaf area were measured non-destructively to develop the models. The actual leaf areas of the plants were measured by PLACOM Digital Planimeter, and multiple regression analysis with Excel 7.0 computer package program was performed for the plants separately. The produced leaf area prediction models in the present study were formulized as LA = (a) + (b1 × L) + [(b2 × (L × W)] + (b3 × L2) + (b4 × W2) + [b5 × (L × W2)] + [b6 × (L2 × W)] + [b7 × (L2 × W2)] where LA is leaf area, W is leaf width, L is leaf length and a, b1, b2, b3, b4, b5, b6, and b7 are coefficients. R2 values for medicinal plants tested varied with species from 0.82 in Origanum onites to 0.98 in Urtica dioica. All R2 values and standard errors were found to be significant at the P < 0.001 level.

Keywords: modelling; leaf area; medicinal plants (search for similar items in EconPapers)
Date: 2005
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://rae.agriculturejournals.cz/doi/10.17221/4896-RAE.html (text/html)
http://rae.agriculturejournals.cz/doi/10.17221/4896-RAE.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlrae:v:51:y:2005:i:1:id:4896-rae

DOI: 10.17221/4896-RAE

Access Statistics for this article

Research in Agricultural Engineering is currently edited by Bc. Michaela Polcarová

More articles in Research in Agricultural Engineering from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().