Crop Physiology Practical Determination of Leaf Area

Original video: https://youtu.be/QXD5rnNXvfg

Lecture on: 22 October 2025

Welcome to the essential guide on determining leaf area—a critical measurement in plant physiology and crop growth analysis! Accurate leaf area data is vital for calculating parameters like Leaf Area Index (LAI) and Net Assimilation Rate (NAR).

In this video, we guide you through the setup and procedure for three common methods used to measure leaf area in the laboratory:

1. Graph Paper Method (Manual): The foundational technique where leaf outlines are traced and squares are counted to estimate the total area. This method is cost-effective but time-consuming.

2. Leaf Area Meter (Automated): A demonstration of the digital leaf area meter, a photoelectric device that reads the leaf area directly and rapidly as individual leaves are fed into it. This is the modern, highly efficient standard in research labs.

3. Easy Leaf Area App (Digital/Mobile): Learn how to use a practical mobile application (e.g., Easy Leaf Area) for quick, non-destructive measurements in the field or lab using a smartphone camera.

Mastering these three techniques ensures you can collect the most valid and meaningful data for your scientific reports and plant research projects!

Keywords: Leaf Area Measurement, Leaf Area Index, LAI, Plant Physiology Practical, Graph Paper Method, Leaf Area Meter, Easy Leaf Area App, Crop Growth Analysis, Scientific Lab Guide, Leaf Measurement, Digital Leaf Area, Plant Research

Location:

Faculty of Agriculture, Universiti Putra Malaysia

Fakulti Pertanian, Universiti Putra Malaysia, 43000 Seri Kembangan, Selangor

https://maps.app.goo.gl/VePw71hmih6pbHkPA

2.983567621706455, 101.73466120334834

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