Long-term variations in soil organic matter under different tillage intensities

Valboa, Giuseppe; Lagomarsino, Alessandra; Brandi, G.; Agnelli, A.; Simoncini, Stefania; Papini, R.; Vignozzi, Nadia; Pellegrini, S.

doi:10.1016/j.still.2015.06.017

Cited by 37 publications

(23 citation statements)

References 40 publications

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“…Similar trend in total soil N or organic N distribution as in surface soil C distribution can occur in no-till / reduced till compared to moldboard ploughed soils, as soil N content in no-till soils is often higher in surface soil than in deeper layers (Oorts et al 2007a;Abdollahi and Munkholm 2014;Neugschwandtner et al 2014;Valboa et al 2015). Neugschwandtner et al (2014) found that specifically the mineralizable N is higher in no-till soils than in moldboard ploughed soils at 0-10 cm.…”

Section: Introductionmentioning

confidence: 72%

“…However, the total C pool of the entire soil profile might not increase, which is important to consider when evaluating different soil practices in terms of C sequestration and climate change mitigation measures. No-till or reduced till soils often have a higher C content in the surface soil layers but have correspondingly less C in their deeper soil layers (Luo et al 2010;Abdollahi and Munkholm 2014;Neugschwandtner et al 2014;Powlson et al 2014;Huang et al 2015;Singh et al 2015;Valboa et al 2015). Sheehy et al (2015) found that soil organic carbon in boreal agroecosystems is redistributed in no-till to more stable particles in comparison to moldboard ploughed soils.…”

Section: Introductionmentioning

confidence: 99%

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Process rates of nitrogen cycle in uppermost topsoil after harvesting in no-tilled and ploughed agricultural clay soil

Laine

Rütting

Alakukku

et al. 2017

Nutr Cycl Agroecosyst

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No-till is considered an advantageous agricultural practice for the environment because soil erosion is decreased compared to ploughed soil. However, for an overall evaluation of the benefits and disadvantages of this crop production method, it is also important to understand the soil nutrient cycling in no-till fields. Little is known about how the gross rates of the different processes of nitrogen (N) cycle are affected by tillage practices in agroecosystems in a northern cold climate. Our study was designed to obtain information about gross soil N process rates in boreal no-till and moldboard ploughed spring barley fields after autumn harvesting. Gross organic N mineralization into ammonium (NH4 +) and NH4 + immobilization were the most important N transformation processes in the soil and their rates were higher in no-till soil than in ploughed soil. Regardless of the higher mineralization rate, the gross rate of NH4 + oxidation into nitrate (NO3 −) was clearly lower in no-till soil. This was explained by higher NH4 + immobilization in no-till soil. The lower NH4 + oxidation rate in no-till soil d e c r e a s e d t h e r i s k f o r N O 3 − leaching, which supports the promulgated environmental benefits of this practice.

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Section: Introductionmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Process rates of nitrogen cycle in uppermost topsoil after harvesting in no-tilled and ploughed agricultural clay soil

Laine

Rütting

Alakukku

et al. 2017

Nutr Cycl Agroecosyst

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“…Apart from manure, existence of partly decomposed plant materials might also increase recalcitrant C pools under INM (Valboa et al, ). The higher recalcitrant C retention in the INM compared with NPKL plots was probably due to the manure addition in the former treatment.…”

Section: Discussionmentioning

confidence: 99%

Long‐term fertilization effects on ¹³C natural abundance, soil aggregation, and deep soil organic carbon sequestration in an Alfisol

et al. 2018

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Although the 13C (13Carbon) natural abundance method is used to study soil C dynamics, scanty information is available on long‐term fertilization effects on soil C sequestration rates along with δ13C in surface (0–30 cm) and deep (30–90 cm) soil layers and their relationships with crop productivities in subtropics. Hence, soil aggregation, δ13C in bulk soils and aggregates, C pools, and sequestration rates were studied in an Indian Alfisol under a 43‐year old wheat (Triticum aestivum L.)‐based cropping system. Treatments were as follows: no mineral fertilizer and no manure (unfertilized control), 100% recommended dose of nitrogen (N), 100% N and 100% recommended phosphorus (NP), 100% N, 100% P, and 100% recommended potassium (NPK), NPK + lime (NPKL), 150% recommended NPK (1.5NPK), and NPK + farmyard manure at 10 Mg ha−1 (NPKF). Plots with NPKF contained 50% higher soil organic C than NPKL in surface soil (0–15‐cm layer). In the 0–90‐cm profile, soil organic C accumulation and sequestration rates in NPKF were ~0.15 and 0.11 Mg ha−1 yr−1 higher than NPKL plots, respectively. The NPKF plots had higher glomalin‐related soil protein and greater recalcitrant C than NPKL, 1.5NPK, and NPK in surface soil. The NPKF plots had higher δ13C values within bulk soils and their aggregates than NPKL and NPK. There were significant correlations between deep soil C sequestration rates with mean crop productivities and δ13C with deep soil C sequestration rates. Overall, NPKF application had the largest surface and deep soil C sequestration with highest crop productivity and hence is recommended.

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“…Much attention has been paid to the potential effects of CA on soil organic matter (SOM) and total nitrogen in soil (Álvaro‐Fuentes, Plaza‐Bonilla, Arrúe, Lampurlanés, & Cantero‐Martínez, ; Barbera, Poma, Gristina, Novara, & Egli, ; de Sanctis et al, ; Mazzoncini et al, ; Valboa et al, ). These two properties are important attributes of soil relating to its quality and functions (O'sullivan et al, ).…”

Section: Introductionmentioning

confidence: 99%

Relationship of soil fertility to biochemical properties under agricultural practices aimed at controlling land degradation

Santiago¹,

Recena

Perea-Torres

et al. 2019

Land Degrad Dev

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Conservation agriculture (CA) is an essential strategy to avoid agricultural land degradation. It affects nutrient availability to plants and soil biological activity. However, an integral view of the effects of CA on soil fertility and biological indicators has been rarely described. Here, we examined the long‐term effects of no‐till and residue mulching on chemical properties, biological functionality indicators (enzyme activity), and nutrient availability indices of soil, and also their potential relationships, in order to provide a comprehensive view of the effects of CA on soil quality improvement. To this end, we assessed the effects after 27 years of conventional tillage (CT) and no‐tillage (NT) on a vertisol. NT increased Fe and Mn bound to organic matter when compared with CT. P and K availability in the soil surface was greater under NT than under CT by effect of more marked fertilizer stratification, and in the case of P by a decreased precipitation rate of Ca phosphates ascribed to an increased soil organic matter (SOM). The availability indices for Fe, Mn, Cu, P, and B were correlated with some enzyme activities. Our results reveal a relationship of soil biological functionality indicators, which were higher under CA, to nutrient availability to plants. This was explained at least in part by changes in soil properties, in particular an increased SOM, affecting both biological properties and nutrient availability. Thus, enzyme activities can be considered effective indicators of change in soil fertility, that is, nutrient availability to plants, a crucial factor for soil quality and functioning.

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Long-term variations in soil organic matter under different tillage intensities

Cited by 37 publications

References 40 publications

Process rates of nitrogen cycle in uppermost topsoil after harvesting in no-tilled and ploughed agricultural clay soil

Process rates of nitrogen cycle in uppermost topsoil after harvesting in no-tilled and ploughed agricultural clay soil

Long‐term fertilization effects on ¹³C natural abundance, soil aggregation, and deep soil organic carbon sequestration in an Alfisol

Relationship of soil fertility to biochemical properties under agricultural practices aimed at controlling land degradation

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Long-term variations in soil organic matter under different tillage intensities

Cited by 37 publications

References 40 publications

Process rates of nitrogen cycle in uppermost topsoil after harvesting in no-tilled and ploughed agricultural clay soil

Process rates of nitrogen cycle in uppermost topsoil after harvesting in no-tilled and ploughed agricultural clay soil

Long‐term fertilization effects on 13C natural abundance, soil aggregation, and deep soil organic carbon sequestration in an Alfisol

Relationship of soil fertility to biochemical properties under agricultural practices aimed at controlling land degradation

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Long‐term fertilization effects on ¹³C natural abundance, soil aggregation, and deep soil organic carbon sequestration in an Alfisol