Overview of Petiole at GreenAppsAndWeb

Mobile platform for measurements in horticulture and floriculture

Overview of Petiole at GreenAppsAndWeb

Petiole app was listed at GreenAppsAndWeb

We are so exited! Our Petiole was listed on a well-known web site GreenAppsAndWeb for plant researchers. The overview of Petiole at GreenAppsAndWeb tells about “Calculation of the foliar area with Petiole, a mobile app for leaf area measurement”. We are appreciated for so detailed feedback about our mobile application and want to discover more details about the synergy of Petiole and GreenAppsAndWeb.

More details about GreenAppsAndWeb

However, Internet develops quickly but some niche fields are still underdeveloped. This lack of appropriate information about the mobile applications for plant scientists was one of the key reasons why GreenAppsAndWeb has appeared.

GreenAppsAndWeb aims to bring to light apps, web apps,
and devices related to the Internet of Things or environmental sensors.

The aim of the GreenAppsAndWeb is to bring to light apps, web apps, and devices related to the Internet of Things or environmental sensors in agriculture, ecology and related fields of study. This project intends to boost development in the app and related devices industries by sharing and analysing the most useful tools to get to know and preserve the environment, and achieve a more sustainable world.

Overview of Petiole

The full review of Petiole app is published here. However, we would like to cite a couple of key paragraphs about our mobile application. It is important for us, because this is not a statement, submitted by the Petiole team. Overview of Petiole at GreenAppsAndWeb is created by Judit Urquijo, who is an independent author and the founder of this project.

This application allows you to calculate in a simple way the surface area of the leaves (what is known as foliar area), an important variable for estimating plant growth or agricultural potential.

Judit Urquijo, GreenAppsAndWeb
Judit Urquijo, CEO GreenAppsAndWeb, which helps to discover how mobile technology can help to protect our planet
Judit Urquijo, CEO GreenAppsAndWeb, which helps to discover how mobile technology can help to protect our planet

The use of the application requires opening a user account (if you only want to try it, you have a possibility to use a demo version). Once implemented this requirement, you access a screen in which the leaves whose surface has been calculated previously are stored.

To perform the measurement of a new leaf, Petiole will ask you first to install OpenCV Manager, a small application that, among other features, allows detection and object recognition.

You also have to print the file containing a chessboard, which it will allow you to calibrate the camera of the mobile device and get the value of the surface area (to start calibration, click the button with the + symbol).

It is advisable to use some kind of plastic cover to crush the leaf (a transparent cover of a CD, for example).

Also, if you need accurate measurements, from Petiole recommend using a stand to eliminate vibrations transmitted by hand and realize the calculations always from the same distance.

More information
Vyacheslav Bykov, ecologist: I have measured 10 plant leaves only in 3 minutes
Images: Screenshots 07/07/2016. © Petiole

Rating 4 out 5


The foliar area “is an important variable for most ecophysiological studies in terrestrial ecosystems concerning light interception, evapotranspiration, photosynthetic efficiency, fertilizers, and irrigation response and plant growth”, as Pandey et al. remember in the study “A simple, cost-effective method for leaf area estimation“. However, it is an extremely laborious and often expensive task if you opt for the use of complex equipment to carry out a direct measurement.

Petiole, like previous initiatives, seeks to facilitate this work using a previously calibrated mobile as a measuring tool for obtaining these parameters. It has not been compared the degree of accuracy provided by this application in relation to the usual methods of work or professional equipment traditionally used, although it is a tool that is being received with interest by the scientific community.

Original text: https://www.greenappsandweb.com/en/android-en/area-of-the-leaves-petiole/


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