Tillage practices of a clay loam soil affect soil aggregation and associated C and P concentrations

Messiga, Aimé J.; Ziadi, Noura; Angers, Denis A.; Morel, Christian; Parent, L. E.

doi:10.1016/j.geoderma.2011.06.014

Cited by 48 publications

(33 citation statements)

References 48 publications

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“…No-till management has several economic and environmental benefits, including reduction of soil erosion, sequestration of soil organic carbon (Soane et al 2012) and reduction of agricultural machinery. Long-term NT practice results in the alteration of soil properties (Madejón et al 2007) and the stratification of nutrients along the soil profile with the addition of fertilizer (Messiga et al 2011). Moreover, longterm NT also results in either decreased (Kumar et al 2012;Guan et al 2014) or increased (Himmelbauer et al 2012;Islam et al 2015) crop yields.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, increased aggregate stability (Jiao et al 2006;Messiga et al 2011) and macro-porosity (Dal Ferro et al 2014) are observed in NT systems, with less soil perturbation and higher organic matter content from crop residues (Scopel et al 2013). These soil physical property modifications could be either positive or negative for corn root growth.…”

Section: Introductionmentioning

confidence: 99%

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The long-term effects of tillage practice and phosphorus fertilization on the distribution and morphology of corn root

Mollier

Ziadi

et al. 2016

Plant Soil

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Background and aims Relevant soil properties and nutrient distributions influencing crop root growth might be different under no-till (NT) and mouldboard plough (MP) management. The possible different root systems within different managements might have key impact on crop nutrient uptake and consequently crop production. Our objective was to assess the long-term combined effects of tillage and phosphorus (P) fertilization on corn (Zea mays L.) root distribution and morphology. Methods Corn root and soil samples were collected during the silking stage at five depths (0-5, 5-10, 10-20, 20-30 and 30-40 cm) and three horizontal distances perpendicular to the corn row (5, 15 and 25 cm) under MP and NT with three P fertilizations (0, 17.5, and 35 kg P ha −1 ) for a long-term (22 years) experiment in eastern Canada. Root morphology and soil properties were determined. Results NT practice decreased corn root biomass by −26 % compared to MP, mainly by decreasing the primary and secondary roots. Additionally, corn roots in NT tend to be more expansive on the surface layer with higher root length and surface densities for the depth of 0-5 cm at two sampling distances of 15 and 25 cm. The 35 kg P ha −1 rate increased the root biomass by 26 and 41 % compared to the 0 and 17.5 kg P ha −1 rates. Conclusions No-tillage practice and low rates of P fertilization reduce corn roots. This is probably caused by the weed competition in NT and the continued downward P status with low P rates over 22 years. Abbreviations MP Mouldboard plough NTNo-till 0P, 0.5P and 1P P fertilization rates of 0, 17.5 and 35 kg P ha −1 every two years RMD Root mass density RSD Root surface density RLD Root length density Plant Soil

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The long-term effects of tillage practice and phosphorus fertilization on the distribution and morphology of corn root

Mollier

Ziadi

et al. 2016

Plant Soil

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“…In agricultural systems, crop management has a strong effect on the soil P content and P availability. Tillage influences physical and chemical processes in soil (Hedley et al, 1982;Vu et al, 2009) and may therefore also affect the retention and stabilization of P (Wright, 2009;Messiga et al, 2011). Intensive tillage may decrease soil organic matter (SOM) content and soil structure compared to reduced tillage (D'Haene et al, 2008), potentially reducing organically bound P (P o ) and resulting in increased P losses through different aggregate dynamics, erosion, and runoff (Scholz et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Tillage also mixes the soil to a certain depth, preventing a stratification within the tilled soil layer (Vu et al, 2009). The effect of tillage on the distribution of P in the soil profile has been studied in detail, whereas its effect on the different P pools has received less attention (O'Halloran, 1993;Redel et al, 2007;Vu et al, 2009;Deubel et al, 2011;Messiga et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Long‐term tillage effects on the distribution of phosphorus fractions of loess soils in Germany

Piegholdt

Geisseler

Koch³

et al. 2013

Z. Pflanzenernähr. Bodenk.

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Different tillage systems may affect P dynamics in soils due to differently distributed plant residues, different aggregate dynamics and erosion losses, but quantitative data are scarce. Objectives were to investigate the effect of tillage on the availability of P in a long-term field trial on loess soils (Phaeozems and Luvisols) initiated from 1990 to 1997. Four research sites in E and S Germany were established with a crop rotation consisting of two times winter wheat followed by sugar beet. The treatments were no-till (NT) without cultivation, except for seedbed preparation to a depth of 5 cm before sugar beet was sown and conventional tillage (CT) with mouldboard plowing down to 25-30 cm. Soil P was divided into different pools by a sequential extraction method, and total P (P t ) in the single P fractions was extracted by digesting the extracts of the fractionation to calculate the contents of organic P. The P t content (792 mg [kg soil] -1 ) in the topsoil (0-5 cm) of NT was 15% higher compared to CT, while with increasing depth the P t content decreased more under NT than under CT. This was also true for the other P fractions except for residual P. The higher P contents in the topsoil of NT presumably resulted from the shallower incorporation of harvest residues and fertilizer P compared to CT, whereas estimated soil losses and thus also P losses due to water erosion were only small for both treatments. Contents of oxalate-extractable Fe and organic C were positively related to the labile fractions of inorganic P, while there was a high correlation of the stable fractions with the clay contents and pH. Multiple regression analyses explained 50% of the variability of these P fractions. Overall, only small differences in the P fractions and availability were observed between the long-term tillage treatments.

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“…2), thus enhancing soil C acquisition for energy. Temperature-dependent decomposition induced aggregate breakdown and liberated nutrients from soil-microorganism complexes (3,36). Excessive P leached to water bodies (Fig.…”

Section: Discussionmentioning

confidence: 99%

Genetic Linkage of Soil Carbon Pools and Microbial Functions in Subtropical Freshwater Wetlands in Response to Experimental Warming

Wang

Lü

et al. 2012

Appl Environ Microbiol

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dRising climate temperatures in the future are predicted to accelerate the microbial decomposition of soil organic matter. A field microcosm experiment was carried out to examine the impact of soil warming in freshwater wetlands on different organic carbon (C) pools and associated microbial functional responses. GeoChip 4.0, a functional gene microarray, was used to determine microbial gene diversity and functional potential for C degradation. Experimental warming significantly increased soil pore water dissolved organic C and phosphorus (P) concentrations, leading to a higher potential for C emission and P export. Such losses of total organic C stored in soil could be traced back to the decomposition of recalcitrant organic C. Warming preferentially stimulated genes for degrading recalcitrant C over labile C. This was especially true for genes encoding cellobiase and mnp for cellulose and lignin degradation, respectively. We confirmed this with warming-enhanced polyphenol oxidase and peroxidase activities for recalcitrant C acquisition and greater increases in recalcitrant C use efficiency than in labile C use efficiency (average percentage increases of 48% versus 28%, respectively). The relative abundance of lignin-degrading genes increased by 15% under warming; meanwhile, soil fungi, as the primary decomposers of lignin, were greater in abundance by 27%. This work suggests that future warming may enhance the potential for accelerated fungal decomposition of lignin-like compounds, leading to greater microbially mediated C losses than previously estimated in freshwater wetlands.

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Tillage practices of a clay loam soil affect soil aggregation and associated C and P concentrations

Cited by 48 publications

References 48 publications

The long-term effects of tillage practice and phosphorus fertilization on the distribution and morphology of corn root

The long-term effects of tillage practice and phosphorus fertilization on the distribution and morphology of corn root

Long‐term tillage effects on the distribution of phosphorus fractions of loess soils in Germany

Genetic Linkage of Soil Carbon Pools and Microbial Functions in Subtropical Freshwater Wetlands in Response to Experimental Warming

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