Journal of Food, Agriculture and Environment

Vol 10, Issue 3&4,2012
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Empirical models for leaf area estimation based on leaf physical parameters in rambutan (Nephelium lappaceum), pulasan (Nephelium mutabile), carambola (Averrhoa carambola) and limau madu (Citrus suhuiensis) grown in Peninsular Malaysia


A. Selamat 1, 2, M. Dayao 1, M. A. Hakim 3, 4*, A. A. Zulkeefli 1

Recieved Date: 2012-05-11, Accepted Date: 2012-09-22


Empirical mathematical model is one of the cheapest means in estimating leaf area as compared to the use of sophisticated and expensive leaf area meters.  The objectives of this paper were to develop a reliable mathematical model(s) for estimating leaf area from leaf parameters [length, width, dimension (length x width), or weight] of selected four Malaysian fruits, namely, rambutan (Nephelium lappaceum), pulasan (Nephelium mutabile), carambola (Averrhoa carambola), and limau madu (Citrus suhuiensis); and comparatively relating the models to leaf size and thickness. Area of each of 500 randomly selected leaves (young to old leaves)  from each species grown in Farm 10, Universiti Putra Malaysia,  were regressed with above leaf parameters based on the selected 14 mathematical models. With subsequent validations, the linear (Y = a + bX) and power or ‘exponential’ (Y = ea. xb = Axb) forms that based on the length x width (X : mm2)  were found to be the best two models for estimating the leaf area (Y : cm2) for each fruit species. Larger leaves (rambutan and pulasan) had higher R2 values than those of smaller sizes (carambola and limau madu). Based on the power model coefficients (allometry), the relative growth of leaf area was higher than that of length x width in species with relatively large leaves. It seemed that leaf thickness had no clear trend in describing the above linear and power models. 


Empirical models, leaf area estimation, fruits, Malaysia

Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 3&4
Category: Agriculture
Pages: 281-286

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :