Investigation of Soil Mechanical Resistance Threshold Values for Two Wheat Cultivars in a Loamy Sand Soil

Ghezelbash, Ehsan; Mohammadi, Mohammad Hossein; Shorafa, M

doi:10.1007/s42729-022-00864-2

Cited by 3 publications

(1 citation statement)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While water availability to plants is mainly determined by soil water potential (van Lier et al, 2019), it can be restricted by high soil mechanical resistance, SR, against root penetration even under optimal water conditions (Ghezelbash et al, 2022). As the soil gets dry and compacted, its resistance to root penetration may become a limiting factor for plant growth (Janakiram et al, 2019;Janakiram et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Mucilage effects on the soil water characteristics curve, mechanical consistency, and penetration resistance of compacted heavy and light texture soils.

Fathinejad,

Mohammadi,

Etesami

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

Aims This study aimed to investigate the effects of mucilage on soil mechanical properties and the soil water characteristic curve(SWC). Methods Six soil samples with a wide range of physical and chemical properties were taken and then SWC, soil penetration resistance(SR), and the Atterberg limits were measured at compaction pressures of 100, 200, 300, 400, and 600 kPa, and mucilage(extracted from chia seed)concentrations of 0, 0.1%, 0.3%, and 0.5%. Based on their texture and consistency, the studied soils were divided into two groups: sandy to loamy and clayey soils. Results Results showed that the effect of mucilage, especially at 0.1%, on the Atterberg limits was more significant for clayey soils. The mucilage reduces the compaction potential of light-texture soils and improves penetrability, especially when the soil is dry and under a high compaction pressure. This results in more water retention, especially at low matric suction. Mucilage causes fine-texture soils to be more prone to compaction. The inconsistent effects of mucilage on heavy and light-texture soils may be due to mucilage arrangement and concentration of the solution within fine and coarse pores. Conclusion It is concluded that the increase in water retention would be significant as long as the compressibility is not amplified due to the presence of the mucilage, especially under high compaction energy. The mucilage can improve water retention and penetrability, but tillage or any disturbance should be conducted with care for intensively cultivated soils, which may have higher root exudate concentration and compressibility than bare and fallow soils.

show abstract

Section: Introductionmentioning

confidence: 99%

Mucilage effects on the soil water characteristics curve, mechanical consistency, and penetration resistance of compacted heavy and light texture soils.

Fathinejad,

Mohammadi,

Etesami

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Stability of Aggregates of Arable Soils: Experimental Determination and Normative Characteristics

Ushkova

Konkina²,

Горепекин³

et al. 2023

Eurasian Soil Sc.

View full text Add to dashboard Cite

Stability of Arable Soil Aggregates: Experimental Determination and Normative Characteristics

Ushkova,

Konkina,

Gorepekin

et al. 2023

Počvovedenie

View full text Add to dashboard Cite

Soil stability in modern soil physics is divided into two directions: water stability and resistance to mechanical influences (compression, wedging). Both soil properties in water-saturated soil are based on the rupture of intra-aggregate interparticle bonds, however, no standard physically justified values have been proposed to characterize the stability of aggregates. The purpose of the article is to substantiate the physical concept of stability of soil aggregates and to propose a single methodological method for quantifying stability as a normative soil characteristic. A high-performance method has been developed based on the dissection of linearly arranged water-saturated aggregates using blades under controlled load. The main stages of the technique are vacuuming of aggregates to eliminate the uncontrolled influence of trapped air, saturation of aggregates in vacuum with water and subsequent determination of the aggregates stability to penetration of blades. Experimental stability values (mN/aggregate) were obtained for 17 soils, which made it possible to form normative ranges for mountainous arable heavy loamy soils: sod-podzolic – 17–19, gray forest –27–29, chernozems – 34–37 mN/agr and a number of other soils, which makes it possible to apply the obtained value as a soil characteristic of the stability of aggregates. The possibility of using the stability values as a methodological basis for monitoring soil stability and degradation, quantitative directions for assessing the state of physical characteristics of soil aggregates (first their main parameter, their stability) is discussed. Taking into account the highly correlative dependence of the proposed stability characteristic on the water stability values obtained by the Savvinov method (85%) and the high performance of the stability determination method (the proposed method is about 20 times more productive than the Savvinov method), the possibilities of using the method and the obtained values of the stability of aggregates as a general physical characteristic and a separate well for quantifying water stability are discussed.

show abstract

Investigation of Soil Mechanical Resistance Threshold Values for Two Wheat Cultivars in a Loamy Sand Soil

Cited by 3 publications

References 62 publications

Mucilage effects on the soil water characteristics curve, mechanical consistency, and penetration resistance of compacted heavy and light texture soils.

Mucilage effects on the soil water characteristics curve, mechanical consistency, and penetration resistance of compacted heavy and light texture soils.

Stability of Aggregates of Arable Soils: Experimental Determination and Normative Characteristics

Stability of Arable Soil Aggregates: Experimental Determination and Normative Characteristics

Contact Info

Product

Resources

About