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Biological nitrification inhibitors for the mitigation of nitrogen losses in wheat-production systems

par Vega-Mas, Izargi;Jauregui, Ivan;Delaplace, Pierre;Vanderschuren, Hervé;Thonar, Cécile
Référence National Symposium for Applied Biological Sciences (NSABS)
Publication Publié, 2020-01-31

Poster de conférence

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Résumé :

INTRODUCTIONNitrification is one of the main nitrogen transforming microbial processes responsible of nitrogen loss in agricultural systems as NO3- leaching and N2O emissions Interestingly, certain plant species as wheat, brachiaria or Sorghum have shown the capacity to suppress the activities of soil nitrifiers using organic compounds exudated from their roots known as Biological Nitrification Inhibitors ( These compounds delay the oxidation of NH 4 into NO 3 that occurs during the nitrification keeping the NH 4 in the soil available for the plant for longer periods while mitigating the N losses from the soil.OBJECTIVE: The aim of this study is to develop innovative strategies for the identification of new compounds from wheat plants as anenvironmental friendly alternative to the application of synthetic nitrification inhibitors.RESUTLS: The production and activity of BNIs have been tested in two wheat landraces, Persia 44 and Wyalkatchem, previously describedas contrasting for BNI activity. Two different approaches have been assessed to unravel the BNI capacity form wheat roots: