The optimal method for measuring fractional PAR (photosynthetically active radiation) is with the LP-80 Ceptometer. It’s a highly accurate way to determine canopy growth and canopy light interception, along with calculating fractional interception and crop coefficient. And because the methodology is automated, it spares you from intensive hand labor, saving you time. Backed by 35 years of research, the LP-80 is one of the most trusted and relied-upon instruments among crop scientists, ecologists

Leaf Area Index (LAI) is one of the most informative indicators we have for understanding canopy function, crop performance, and water use. In our upcoming webinar, The Expert Guide to Leaf Area Index: Theory, Methods, and Application, METER Product Scientist Jeff Ritter breaks down: • Why LAI matters for evapotranspiration, light interception, and water balance • When and how to measure it effectively in different crops • Techniques for both low and tall vegetation • Common pitfalls and practic