Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free:

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site:, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Google Analytics

Targeted advertising cookies


The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at or by post at:

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

Dernière mise à jour : Mai 2018

Menu Logo Principal AgroParisTech université Paris-Saclay

Welcome to ECOSYS

UMR ECOSYS - Ecologie fonctionnelle et écotoxicologie des agroécosystèmes

Poster 2 : Digestats_N2O_2014

Poster 2


Valorization of biogas digestates in agriculture, effects on N2O soil emissions: laboratory characterizations

Use of Anaerobic Digestates (AD) as fertilizer is an emergent sector in agriculture. AD qualities are largely affected by organic resource treated in the digester and post-processing’s performed on raw digestates. Large quantities of ammonia present in AD may enhance nitrification and denitrification rates and consequently N2O emissions. This work addresses the effect of AD composition on N2O fluxes according to their feedstocks and post-treatment procedures. We conducted laboratory measurements using treated soil cores with various AD during more than 3 months. -Amounts of AD inputs were adjusted to provide approximately an equivalent of 170 kgNT ha-1 (3 replicates per treatment). Soils were maintained to their WHC (28% w/w) with WFPS. Fluxes were deduced from gas accumulation in an incubator connected an IR Spectrometers (Aerodyne QC-TILDAS for N2O and Licor 820 for CO2 ) during 3 min. Phase separation leads to a more distinct change in N-N2O flux magnitudes With overall Raw emitting more than Solid and liquid emitting the least. Carbon inputs vary largely with AD treatments, between 70 to 5971 kg C ha-1 (higher for the solids lower for the liquids). Phase separation did not result in marked changes in C mineralization. This study underlines the importance of the soil carbon component for N2O fluxes

Download documents