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Agronomy 2016, 6(2), 38; doi:10.3390/agronomy6020038

In Winter Wheat, No-Till Increases Mycorrhizal Colonization thus Reducing the Need for Nitrogen Fertilization

1
Ecologie et Dynamique des Systèmes Anthropisés (EDYSAN, FRE 3498 CNRS UPJV), Laboratoire d’Agroécologie, Ecophysiologie et Biologie intégrative, Université de Picardie Jules Verne, 33 rue St Leu, Amiens Cedex 80039, France
2
Adaptation des Plantes à leur Environnement. Unité Mixte de Recherche 1318, Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, Centre de Versailles-Grignon, R.D. 10, Versailles Cedex F-78026, France
*
Author to whom correspondence should be addressed.
Academic Editor: Peter Langridge
Received: 11 April 2016 / Revised: 8 June 2016 / Accepted: 16 June 2016 / Published: 21 June 2016
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Abstract

Arbuscular mycorrhizal fungi (AMF) play a major role in the uptake of nutrients by agricultural plants. Nevertheless, some agricultural practices can interrupt fungal-plant signaling and thus impede the establishment of the mycorrhizal symbiosis. A field experiment performed over a 5-year period demonstrated that both the absence of tillage and of nitrogen (N) fertilization improved AMF colonization of wheat roots. Moreover, under no-till conditions, N uptake and aboveground biomass production did not vary significantly between N-fertilized and N-unfertilized plots. In contrast, both N uptake and above ground biomass were much lower when N fertilizer was not added during conventional tillage. This finding strongly suggests that for wheat, no-till farming is a sustainable agricultural system that allows a gradual reduction in N fertilizer use by promoting AMF functionality and at the same time increasing N uptake. View Full-Text
Keywords: winter wheat; tillage; nitrogen fertilization; arbuscular mycorrhizal fungi; nitrogen uptake winter wheat; tillage; nitrogen fertilization; arbuscular mycorrhizal fungi; nitrogen uptake
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Verzeaux, J.; Roger, D.; Lacoux, J.; Nivelle, E.; Adam, C.; Habbib, H.; Hirel, B.; Dubois, F.; Tetu, T. In Winter Wheat, No-Till Increases Mycorrhizal Colonization thus Reducing the Need for Nitrogen Fertilization. Agronomy 2016, 6, 38.

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