Functional response of soil microbial communities to tillage, cover crops and nitrogen fertilization

Nivelle, Élodie; Verzeaux, Julien; Habbib, Hazzar; Kuzyakov, Yakov; Decocq, Guillaume; Roger, David; Lacoux, Jérôme; Duclercq, Jérôme; Spicher, Fabien; Nava-Saucedo, José-Edmundo; Catterou, Manuella; Dubois, Frédéric; Tétu, Thierry

doi:10.1016/j.apsoil.2016.08.004

Cited by 109 publications

(80 citation statements)

References 47 publications

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“…However, the DH enzyme activity, which reflects the metabolic state of microorganisms in soils [19], was higher in NT and N0 plots as compared to those that were ploughed or fertilized. The finding that NT-N0 soils, characterized by the lowest concentration of nutrients (i.e., available phosphorus and nitrate), are also the most microbiologically active is supported by the results obtained by Nivelle et al [20], and is consistent with those obtained by Das et al [21], who also observed that the DH enzyme activity was approximately twice as high under NT than under CT conditions. The highest value of penetration resistance (SPR) was obtained under NT conditions in N-fertilized soils (1.265 MPa), while the lowest value was found in ploughed soils without N fertilization (0.57 MPa) ( Table 1).…”

Section: Resultssupporting

confidence: 82%

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

et al. 2017

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Arbuscular mycorrhizal fungi (AMF) play major roles in nutrient acquisition by crops and are key actors of agroecosystems productivity. However, agricultural practices can have deleterious effects on plant-fungi symbiosis establishment in soils, thus inhibiting its potential benefits on plant growth and development. Therefore, we have studied the impact of different soil management techniques, including conventional moldboard ploughing and no-till under an optimal nitrogen (N) fertilization regime and in the absence of N fertilization, on AMF spore density and soil chemical, physical, and biological indicators in the top 20 cm of the soil horizon. A field experiment conducted over six years revealed that AMF spore density was significantly lower under conventional tillage (CT) combined with intensive synthetic N fertilization. Under no-till (NT) conditions, the density of AMF spore was at least two-fold higher, even under intensive N fertilization conditions. We also observed that there were positive correlations between spore density, soil dehydrogenase enzyme activity, and soil penetration resistance and negative correlations with soil phosphorus and mineral N contents. Therefore, soil dehydrogenase activity and soil penetration resistance can be considered as good indicators of soil quality in agrosystems. Furthermore, the high nitrate content of ploughed soils appears to be detrimental both for the dehydrogenase enzyme activity and the production of AMF spores. It can be concluded that no-till, by preventing soil from structural and chemical disturbances, is a farming system that preserves the entire fungal life cycle and as such the production of viable spores of AMF, even under intensive N fertilization.

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Section: Resultssupporting

confidence: 82%

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

et al. 2017

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“…There are studies which showed the necessity of long term experiments to obtain benefits in the TOC contents. However, in our study higher TOC were found in the CC treatments since 2012 that are in agreement with other short term experiments (Nivelle et al, 2016;Veenstra et al, 2007). Particularly, Villamil et al (2006) and Mazzoncini et al…”

Section: Resultssupporting

confidence: 82%

“…In addition, a decrease in the urease activity was found by Balezentiene and Klimas (2009) Over the years, we expected an increase of the enzymatic activities by CC, but only dehydrogenase and urease enzymes showed clearly this effect. The accumulation of organic matter on the top layer in the CC treatments might have contributed to this stimulation but also stabilized the other soil enzymes due to the lack of soil disruption by minimum tillage (Nivelle et al, 2016). In addition, the fallow treatment incremented the β-glucosaminidase and dehydrogenase activities from 2010 to 2016.…”

Section: Resultsmentioning

confidence: 95%

“…From 2008 until 2016, there were increases of 39% after barley, 36% after vetch and 25% after fallow. Some studies showed that the combination of no tillage and use of CC is necessary to increase the TOC content (Nivelle et al, 2016;Veenstra et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

“…Total organic carbon (TOC) content is a soil quality indicator that is affected by the changes in the crop management such as intensive tillage and the addition of crop residues to the soil (Chavarría et al, 2016;Muñoz et al, 2007;Nivelle et al, 2016;Veenstra et al, 2007;Villamil et al, 2006). Benefits in soil structure are related to its accumulation in the soil and an increase in the formation and stabilization of soil microaggregates and macroaggregates (Beare et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Biological and other soil parameters response to winter cover crops in a mediterranean irrigated system

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Soil biochemical and microbial response to wheat and corn stubble residue management in Louisiana

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The effects of crop residue on soil conditions depend on the quality and management of the residue. Management practices that do not use physical disturbance (prescribed fire and no-till) were investigated for their potential impacts on soil chemical and biological properties. Surface soil samples (0-5 cm) were collected across no-till and prescribed fire treatments of wheat (Triticum spp.) in 2014 and 2015 and in 2014 in corn (Zea mays L.) stubble residue at 0 h (before management) and at 1 h, 6 h, 24 h, 7 d, 1 mo, and 6 mo after management. There was a lack of difference between prescribed fire and no-till management responses in soil chemical and biological properties. However, similar responses in prescribed fire and no-till management over sampling time of NO 3 --N, NH 4 + -N, enzyme activity, and absolute abundance of ester-linked fatty acid methyl ester biomarkers suggest that abiotic factors and systems management (i.e., fertilizer applications, crop rotation) had a greater influence in these humid subtropical production systems. Additions of soybean [Glycine max (L.)Merr.] residue and N fertilizers in a wheat (Triticum aestivum L.)-soybean rotation increased NH 4 + -N concentrations by 153%, N-acetyl-β-D-glucosaminidase activity by 247%, and relative abundance of Gram-negative bacteria and saprophytic fungi regardless of residue management. Nitrogen fertilizer applications in corn systems also increased NH 4 + -N concentrations (322%) along with relative abundance of actinomycetes and saprophytic fungi. These results suggest that no-till and prescribed fire management are viable residue management options that maintained soil organic matter and inorganic N concentrations; however, further investigation is needed to evaluate the long-term (>2 yr) impacts on soil health.Abbreviations: AMF, arbuscular mycorrhizal fungi; FAME, fatty acid methyl ester; Gram−, Gram-negative bacteria; Gram+, Gram-positive bacteria NAGase, N-acetyl-β-D-glucosaminidase; SOM, soil organic matter.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Functional response of soil microbial communities to tillage, cover crops and nitrogen fertilization

Cited by 109 publications

References 47 publications

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

Biological and other soil parameters response to winter cover crops in a mediterranean irrigated system

Soil biochemical and microbial response to wheat and corn stubble residue management in Louisiana

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