Long-term impact of cover crop and reduced disturbance tillage on soil pore size distribution and soil water storage

Araya, Samuel N.; Mitchell, Jeffrey P.; Hopmans, Jan W.; Ghezzehei, Teamrat A.

doi:10.5194/soil-8-177-2022

Cited by 16 publications

(11 citation statements)

References 84 publications

(91 reference statements)

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“…This disparity in size has the potential to alter the pore size distribution in coarse-textured soil, specifically shifting it towards smaller pore sizes with a broader size distribution 29 , 30 . In other words, adding ASi to coarse-textured soil shifts the pore size distribution toward fine-textured soil 31 . Consequently, this shift ensures a gradual drainage of pores in response to a drop in matric potential.…”

Section: Discussionmentioning

confidence: 99%

The effect of amorphous silica on soil–plant–water relations in soils with contrasting textures

Zarebanadkouki,

Al Hamwi,

Abdalla

et al. 2024

Sci Rep

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This study investigates how amorphous silica (ASi) influences soil–plant–water interactions in distinct soil textures. A sandy loam and silty clay soil were mixed with 0 and 2% ASi, and their impact on soil retention and soil hydraulic conductivity curves were determined. In parallel, tomato plants (Solanum lycopersicum L.) were grown in experimental pots under controlled conditions. When plants were established, the soil was saturated, and a controlled drying cycle ensued until plants reached their wilting points. Soil water content, soil water potential, plant transpiration rate, and leaf water potential were monitored during this process. Results indicate a positive impact of ASi on the sandy loam soil, enhancing soil water content at field capacity (FC, factor of 1.3 times) and at permanent wilting point (PWP, a factor of 3.5 times), while its effect in silty clay loam was negligible (< 1.05 times). In addition, the presence of ASi prevented a significant drop in soil hydraulic conductivity ($${K}_{h}$$ K h ) at dry conditions. The $${K}_{h}$$ K h of ASi-treated sandy loam and silty clay at PWP were 4.3 times higher than their respective control. Transpiration rates in plants grown in ASi-treated sandy loam soil under soil drying conditions were higher than in the control, attributed to improved soil hydraulic conductivity. At the same time, no significant difference was observed in the transpiration of plants treated with ASi in silty clay soil. This suggests ASi boosts soil–plant–water relationships in coarse-textured soils by maintaining heightened hydraulic conductivity, with no significant effect on fine-textured soils.

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Section: Discussionmentioning

confidence: 99%

The effect of amorphous silica on soil–plant–water relations in soils with contrasting textures

Zarebanadkouki,

Al Hamwi,

Abdalla

et al. 2024

Sci Rep

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“…The long-term combination of NTCC altered soil structure, as well as the soil hydraulic properties and water storage, compared to STCC. Our previously published determinations of soil hydraulic properties over time -as opposed to static analysis such as Araya et al (2022) -indicated that reduced disturbance with cover cropping led to a bimodal pore size distribution in surface soils (0-2 inch) (0-5 cm) and a 20% increase in water storage. Increased aeration and higher saturated hydraulic conductivity allow more water to be retained in the root zone without becoming waterlogged (Araya et al 2022).…”

Section: Soil Structure and Biologymentioning

confidence: 99%

“…Our previously published determinations of soil hydraulic properties over time -as opposed to static analysis such as Araya et al (2022) -indicated that reduced disturbance with cover cropping led to a bimodal pore size distribution in surface soils (0-2 inch) (0-5 cm) and a 20% increase in water storage. Increased aeration and higher saturated hydraulic conductivity allow more water to be retained in the root zone without becoming waterlogged (Araya et al 2022). While variability was too high to show a statistical difference (P ≤ 0.05), the mean saturated hydraulic conductivity of the STNC treatment was roughly three times slower than each of the other treatments (Araya et al 2022).…”

Section: Soil Structure and Biologymentioning

confidence: 99%

“…These efforts have defined critical soil health principles that include (1) reducing soil disturbance, (2) retaining surface residues, (3) enhancing biological diversity, and (4) maximizing growth and longevity of living roots in the soil (USDA NRCS 2012). Together, these principles have become internationally known as the basis for "conservation agriculture" systems (Mitchell et al 2019;Reicosky and Kassam 2021).…”

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confidence: 99%

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No-tillage, surface residue retention, and cover crops improved San Joaquin Valley soil health in the long term

Mitchell,

Cappellazzi,

Schmidt

et al. 2024

California Agriculture

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A long-term annual crop study in Five Points, California, shows that the combined use of no-tillage, surface residue retention, and cover crops improves soil health compared to conventional practices common to the region. Several chemical, biological, and physical soil health indicators were improved when these practices were combined. Our data suggest that farmers stand to gain multiple synergistic benefits from the integrated use of these practices by increasing soil structural stability, water infiltration and storage, and agroecosystem biodiversity, and improving the efficiencies of the carbon, nitrogen, and water cycles of their production systems.

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“…Conservation tillage technology is widely used in agricultural engineering [1][2][3][4]. Notillage, less tillage, and straw mulching are adopted to maintain soil moisture, improve soil structure [5], and slow down land degradation [6][7][8][9][10]. A no-tillage sowing environment for implementing conservation tillage is different from traditional sowing farmland.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characteristics of Rice Root–Soil Complex in Rice–Wheat Rotation Area

et al. 2022

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In order to explore the mechanical characteristics of stubble breaking and provide a theoretical basis for the design of a stubble breaking and crushing blockage prevention device, an orthogonal test with three factors (water content, bulk weight, and root content) and a quick shearing test of remolded soil were carried out in a laboratory. The shear resistance of the rice root–soil complex was studied and the soil mechanical equation of the rice root–soil composite was established. It is found that the shear strength of the root–soil composite is related to water content and root content. When the water content was around 30% and the root content was 1.1%, the cohesion of the root–soil composite was the smallest. With the decrease or increase of water content and the decrease or increase of root content, the cohesion of the root–soil composite showed the trend of increasing layer by layer. When the water content was 40% and the root content was 1.1%, the internal friction angle of the root–soil composite showed the minimum value. With the decrease of water content and the increase of root content, the internal friction angle of the root–soil composite gradually showed an increasing trend; while the root content had a great influence on the internal friction angle, the influence of water content on it was relatively small. The direct shear and fast shear tests of root–soil composite samples showed that the shear strength of the root–soil composite and the normal pressure loaded on it conform to the Coulomb equation. The presence of roots increased the shear strength and cohesion value of the soil and improved the resistance to deformation of the soil, but had little influence on the internal friction angle.

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Long-term impact of cover crop and reduced disturbance tillage on soil pore size distribution and soil water storage

Cited by 16 publications

References 84 publications

The effect of amorphous silica on soil–plant–water relations in soils with contrasting textures

The effect of amorphous silica on soil–plant–water relations in soils with contrasting textures

No-tillage, surface residue retention, and cover crops improved San Joaquin Valley soil health in the long term

Mechanical Characteristics of Rice Root–Soil Complex in Rice–Wheat Rotation Area

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