Know more

About cookies

What is a "cookie"?

A "cookie" is a piece of information, usually small and identified by a name, which may be sent to your browser by a website you are visiting. Your web browser will store it for a period of time, and send it back to the web server each time you log on again.

Different types of cookies are placed on the sites:

  • Cookies strictly necessary for the proper functioning of the site
  • Cookies deposited by third party sites to improve the interactivity of the site, to collect statistics

Learn more about cookies and how they work

The different types of cookies used on this site

Cookies strictly necessary for the site to function

These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

Furthermore, you have the possibility of opposing the use of audience measurement tracers strictly necessary for the functioning and current administration of the website in the cookie management window accessible via the link located in the footer of the site.

Technical cookies

Name of the cookie

Purpose

Shelf life

CAS and PHP session cookies

Login credentials, session security

Session

Tarteaucitron

Saving your cookie consent choices

12 months

Audience measurement cookies (AT Internet)

Name of the cookie

Purpose

Shelf life

atid

Trace the visitor's route in order to establish visit statistics.

13 months

atuserid

Store the anonymous ID of the visitor who starts the first time he visits the site

13 months

atidvisitor

Identify the numbers (unique identifiers of a site) seen by the visitor and store the visitor's identifiers.

13 months

About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

Good to know:

  • The data collected are not cross-checked with other processing operations
  • The deposited cookie is only used to produce anonymous statistics
  • The cookie does not allow the user's navigation on other sites to be tracked.

Third party cookies to improve the interactivity of the site

This site relies on certain services provided by third parties which allow :

  • to offer interactive content;
  • improve usability and facilitate the sharing of content on social networks;
  • view videos and animated presentations directly on our website;
  • protect form entries from robots;
  • monitor the performance of the site.

These third parties will collect and use your browsing data for their own purposes.

How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

You can change your choices at any time by clicking on the "Cookie Management" link.

You can manage these cookies in your browser. Here are the procedures to follow: Firefox; Chrome; Explorer; Safari; Opera

For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at cil-dpo@inrae.fr or by post at :

INRAE

24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal Institut Agro Montpellier LEPSE membre de Montpellier Université d'Excellence Labex AGRO Institut Carnot DigitAg

Home page

Specifications

Its main features are a throughput of 1680 plants, accurate monitoring and measurement of environmental conditions, accurate measurements of phenotypic traits (plant architecture, leaf area, organ size, plant volume/biomass and transpiration rate) and an interface with modelling.

Environmental characterisation

  • Light, air temperature, VPD (Vapour Pressure Deficit) are measured every minute (values averaged and recorded every 15 minutes). Measurements are taken at 6 points in the greenhouse at plant level. Light and VPD mapping is carried out several times a year to precisely characterise the climatic gradients in the greenhouse. The experimental design and data analysis must take these gradients into account.
phenoarch-meteo_medium
  • The temperature of organs is measured every minute (values averaged and stored every 15 minutes) on 8 plants distributed in the greenhouse according to the gradients described above. This gives access to the temperature actually experienced by different plant organs (leaves, meristems). For example, the temperature of the leaves and the air can vary by more than 8°C.
phenoarch-thermocouple_medium

The temperature of the meristematic zone of studied organs is measured with fine copper-constantan thermocouples

  • Impact of plant movement : Plant movement can potentially impact plant growth. The growth of plants placed on the conveyor is compared with those that are not moving.

Control of soil water status

  • The relevant physiological variable for soil water status is water potential but the variable for control is water content. Pots and plants are weighed several times a day (depending on evaporative demand). The volume of water in the soil is determined by the total weight minus the weight of the pots, dry soil and the estimated weight of the plant.
    Soil water content is determined by dividing the volume of water by the weight of dry soil. The water potential of the soil is calculated via a water release curve.

phenoarch-balances_medium
phenoarch-figure-soil-water-content_large
  • A sub-sample of plants is weighed continuously. Transpiration is calculated every 15 minutes.

Measurement of leaf area and plant biomass

The images are taken on 2 axes (top and side view). These images are analysed to separate the plant from the rest of the image (segmentation process). The result is shown below. The predicted biomass correlates very well with the measured biomass (see example below).

phenoarch-raw-image_medium

Raw data (side view)

phenoarch-analyzed-image_medium

Analyzed data

phenoarch-correlation_medium

Correlation between measured and predicted biomass

Plant architecture and individual organs

More sophisticated image analysis is being developed to individualise organs and determine their geometry.

Efficiency of radiation use

Measurements of intercepted radiation and estimated biomass could be used to calculate radiation use efficiency (under development).