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

Dernière mise à jour : Mai 2018

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Matrices

The four residual organic products, the soil, the crops and the soil water, as well as the rainfall and gaseous emissions after spreading, are analysed. The sampling methods are presented.
Sol

Soils

These are analysed every two years before each spreading. X unit samples are taken from the ploughed layer (0-25 cm) of each plot. The unit samples from each plot are grouped together as a global sample, which is analysed.

PRO

 Organic Waste Products

They are analysed after each spreading. 20 unit samples are taken for each conditioner when spreading is carried out. The unit samples from each conditioner are grouped together as a global sample, which is analysed.

récoltes

Crops : maize and wheat

The yields are measured every year. And plants are also analysed every year (grians, stems and leaves separately).

eau de percolation

Percolation water

The soil solution from lysimeter or porous cup is analysed for major elements and also for trace elements like metals.

précipitations

Rainfall

This is collected by a refrigerated rain gauge. It is analysed at regular intervals depending on the volume of rainfall.

gaz

Emitted gases

Just after spreading gases are analysed with a system of chambers.

Every year, samples are stored in a sample library (dry products) and the freezer (fresh products).

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