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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: https://www.ghostery.com/fr/products/

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: http://www.youronlinechoices.com/fr/controler-ses-cookies/, 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:

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

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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 cil-dpo@inra.fr or by post at:

INRA
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31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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OWP or FRM ?

OWP or FRM ?

Livestock effluents, organic waste products, compost, sludge, digestate, slurry, manure, FRM ...?
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Epandage sur EFELE

Agricultural recycling, an ancient and contemporary practice

Spreading organic materials, old and contemporary practice raising questions
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Agricultural Valorization of Organic Waste Products

What are the benefits of organic product (OR) recycling?

Today 300 million tons of OR are yearly produced in France coming from agriculture (animal manures), urban activities (sludge, urban composts) and industries (agro-industries or other). The recycling in agriculture is largely encouraged due to their contents in nutrients and organic matter contributing to the closing of biogeochemical cycles in territories. Additionally, anaerobic digestion is encouraged to produce alternative sources of energy and fertilizer, and OR recycling could also contribute to increase of the organic C stocks in soils and therefore attenuate greenhouse gaz (GHG) emissions from anthropogenic sources. 

What are the risks ?

However, these recycling practices may also have environmental impacts related to nutrient management such as risks of nitrate leaching of emissions of N2O and NH3. Inputs of OR to soils can also represent a source of contaminants contained in OR (organic contaminants such as pharmaceuticals, persistent contaminants…, trace elements, pathogens…).

Needs for field observations and measurements

Both benefits and environmental impacts may vary with the origin and characteristics of the OR, the pedoclimatic conditions. On the other hand, the actual regulations about recycling may be adequate to prevent ecosystem alteration and questions remains on the long-term effect of repeated applications. It is thus of great importance to know and quantify these benefits and the potential impacts in representative field conditions.

In that respect, the French Observatory on Organic Residues, the SOERE PRO, has been created to study the agronomic effects and the potential risks of the recycling of the OR in various agricultural situations.

See => Observatory presentation