Ecological agriculture intensification through crop-pasture rotations does improve aggregation of Southeastern-Pampas Mollisols

Tourn, Santiago Néstor; Videla, Cecilia; Studdert, Guillermo Alberto

doi:10.1016/j.still.2019.104411

Cited by 13 publications

(5 citation statements)

References 41 publications

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“…Soil aggregation is an important indicator of soil structural stability (Kalhoro et al., 2017; Sekaran et al., 2021; Six et al., 2000; Tourn et al., 2019) that influences soil health factors, including (a) soil organic C (SOC) conservation and nutrient dynamics (Rodríguez et al., 2021; Somasundaram et al., 2017; Weidhuner et al., 2021; S. Xu et al., 2021), (b) porosity and water retention (Regelink et al., 2015; Sekaran et al., 2021), (c) water infiltration and surface runoff, and (d) soil erosion (Anderson et al., 2019). Soil organic matter (SOM) is one of the major binding agent responsible for formation and stabilization of soil micro‐ (<250 μm) or macroaggregates (>250 μm) (Jastrow & Miller, 1998; Six et al., 1999; Tisdall & Oades, 1982).…”

Section: Introductionmentioning

confidence: 99%

“…Prairie that has not been disturbed (i.e., tilled) tends to have higher SOM content, greater aggregate stability, increased root density, and more microbial diversity than cropland systems (Jastrow, 1996; Gelaw et al., 2015; Guillaume et al., 2021; Tourn et al., 2019). In pastures, high root–macroaggregate amounts are generally associated with fine roots absent within other management systems (Rodríguez et al., 2021).…”

Section: Introductionmentioning

confidence: 99%

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Land management effects on wet aggregate stability and carbon content

Mikha

Jin

Johnson

et al. 2021

Soil Science Soc of Amer J

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Land management affects soil structure and many other soil properties and processes. Our objectives were to evaluate soil organic C (SOC), aggregate size distribution, aggregate‐associated C, and soil structure as affected by long‐term land management and slope. A chronosequence of 38 on‐farm sites with low to high (5–18%) slopes was selected to evaluate 5–40 yr of management. The sites were classified as business as usual (BAU) cropland (BAU‐Crop), BAU pasture (BAU‐Past), newly established conservation reserve program (CRP) areas (CRP‐New), and established CRP (CRP‐Old). Soil samples were collected from the 0‐to‐5‐ and 5‐to‐15‐cm depth increments and processed for soil property measurements including fractionation by wet sieving into five aggregate size classes (>2,000, 1,000–2,000, 500–1,000, 250–500, and 53–250 μm). Within the surface 5 cm, mean weight diameter (MWD) and geometric mean diameter (GMD) were used to characterize soil structural stability. The BAU‐Past and CRP‐Old sites had 79% more macroaggregates (>2,000, 1,000–2,000, and 500–1,000 μm), 123% higher MWD, 38% higher GMD, and 47% higher SOC than BAU‐Crop or CRP‐New sites. The 5‐to‐15‐cm depth increment showed a similar but lower magnitude response. Aggregate‐associated C was quantified using a constant soil mass that reflected aggregate size distribution to prevent overestimating C content. Lower‐slope locations had more SOC, more macroaggregates, more C associated with macroaggregates, and higher GMD and MWD compared with high‐slope locations across all management classifications and soil depths. The results support our hypothesis that the high‐slop soils may benefits from specific management decisions than the lower‐sloping soils as a function of landscape property. We recommend reestablishing grassland on sloping land that is susceptible to excessive soil erosion, although those practices will likely take a long time to restore soil structural stability and SOC content to precultivation levels.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Land management effects on wet aggregate stability and carbon content

Mikha

Jin

Johnson

et al. 2021

Soil Science Soc of Amer J

View full text Add to dashboard Cite

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“…Six et al (1998) showed that no‐tillage measures could promote the accumulation of fPOM in croplands. Moreover, no‐tillage also significantly improved soil aggregate stability (Fernández et al, 2017; Tourn et al, 2019). Therefore, implementing no‐tillage or other conservation tillage measures in black soil areas, with few conservation tillage practices, may be a feasible measure to slow the decrease in the mSOM and the bulk SOM C content (Hao et al, 2020; Man et al, 2021; Wulanningtyas et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Accumulation of SOM fractions to croplands and plantations converted from cropland with black soil

et al. 2022

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Soil organic matter (SOM) decreases after the conversion of native grasslands to croplands and increases after the conversion of croplands to plantations. However, the reasons for loss and/or accumulation of SOM fractions remain unclear. Hence, we investigated SOM fraction quantity and quality of soils from cropland (CL), a plantation (PL) converted from cropland, and native grassland (NG) all converted from the black soil (Mollisols) region of China. Results showed that: (1) across all sites, coarse

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“…Additionally, in soil organic matter areas, the limited fertilizer resources are markedly wasted and lead to environmental pollution [10] . Regarding the limited utilization of fertilizer resources, China adopted the concept of ecological agriculture in the last century [11,12] . In this regard, a lot of research on soil nutrient status has been carried out.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of soil organic matter and total nitrogen under relay strip intercropping system

Xiao

Hassan

Cui³

et al. 2022

Preprint

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Assessing the spatial distribution of organic matter and total nitrogen in soil is essential for management and optimum utilization of fertilizers in order to obtain better crop yield with minimum fertilizers cost. Subsequently, this field experiment has studied the impact of different planting patterns arrangements of maize and soybean strip relay intercropping on spatial distribution of soil total nitrogen and organic matter contents. The planting was arranged in a manner that soil sampling could be done from continuous maize/soybean relay strip intercropping (MS1), maize/soybean relay strip intercropping in rotations (MS2), Traditional maize/soybean intercropping (MS3), sole maize (M), sole soybean (S), and fallow land (FL) from 2018 to 2020. The results showed significant variations for soil organic matter and total nitrogen under different planting patterns of maize and soybean in intercropping. The highest soil organic matter (29.19 g/kg) and total nitrogen (10.19 g/kg) were MS2. In contrast the minimum organic matter (1.69 g/kg) and total nitrogen (0.64 g/kg) were FL. Soil organic matter and total nitrogen in MS2 increased by 186.45% and 164.06%, respectively, compared with FL. Furthermore, under MS2, the spatial distribution of soil organic matter was higher in both maize and soybean crop rows as compared with other cropping patterns, whereas the soil total nitrogen was higher under soybean rows as compared with maize in all other treatment. However, the correlation analysis of the treatments showed variations for organic matter. It can be concluded that different planting patterns can have other effects on soil organic matter and total nitrogen distribution under intercropping. Moreover, it is recommended from this study that MS2 is a better planting pattern for strip intercropping, that can increase spatial distribution of soil organic matter and total nitrogen, consequently it can improving the soil fertility and C:N ratio.

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Ecological agriculture intensification through crop-pasture rotations does improve aggregation of Southeastern-Pampas Mollisols

Cited by 13 publications

References 41 publications

Land management effects on wet aggregate stability and carbon content

Land management effects on wet aggregate stability and carbon content

Accumulation of SOM fractions to croplands and plantations converted from cropland with black soil

Spatial distribution of soil organic matter and total nitrogen under relay strip intercropping system

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