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):