I’m Looking for a general way to measure the leaf area for different crop types. How can I deal wit stiff and semi-rigid leaves ?
There are leaf area meters that do the job. But you can also use simple mathematical methods
The area of the collected leaves can be measured using a leaf area meter or an image scanner and image analysis software (ImageJ) and mobile applications (Petiole, Easy Leaf Area). The measured leaf area can then be divided by the area of the traps to obtain LAI.
puedes usar papel milimetrado, dibuje el area y calcule... sabes cuanto mide un cuadraro y solo multiplicas, sin olvidar las formulas matematicas, lo otro es corta una area de 5x5 o 10x10 usando como guía el tamaño de la hoja milimetrada, luego pesa ese cuadrado de hoja y el resto para así extrapolar el area total... no es tan exacto pero tienes un aproximado del area foliar... (1mgr es a 10 milimetros cuadrados, 28,5 mgr será 285 milimetros cuadrados, algo así)
Have you tried "Leaf‐IT"? It is an Android application for measuring leaf area, and it is for FREE.
You can find more about it here:
Article Leaf-IT: An Android application for measuring leaf area
@Julian Schrader, @Giso Pillar, @Holger Kreft
It is a new application and must be helpful.
Good luck with you project,
Mustafa
You can use the Digimizer application method ( free download ) with focusing on how to take the leaves samples
beside all helpful answers above, you can also scan your leaves and then use digmizer software. also it's free
Their are diffrent methods of leaf area measurement but now a days leaf atea meter is widely use by researchers.
You. Visit www.plantstress.com for information regarding physiological observations
The conventional method of recording leaf area is by taking measurements as maximum length and maximum width.
Leaf area = Length x Width x Correction factor
Different species have different correction factor
Follow this link to https://academic.oup.com/jxb/article/54/392/2403/621920
If you want to measure leaf area, I recommend LeafByte. It's a free and open source app for iPhones and iPads. It measures leaf area and herbivory levels much more quickly than ImageJ and related software. It also automatically saves your data for you in a spreadsheet.
You can download it in the app store or read more about LeafByte at the website below.You can also check out the FAQ page for ways to measure leaves non destructively and in the field.
https://zoegp.science/leafbyte
https://zoegp.science/leafbyte-faqs
Disclaimer-I was involved in making this app, but since its free I make no money from its use.
Please let me know; is there any correction factor for Solenstemma argel?
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