Vertic soils and Vertisols in cryogenic environments of southern Siberia, Russia

Kovda, I. V.; Goryachkin, S. V.; Лебедева, М. П.; Чижикова, Н. П.; Куликов, А. И.; Badmaev, N. B.

doi:10.1016/j.geoderma.2016.11.008

Cited by 23 publications

(4 citation statements)

References 16 publications

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“…Hence, vertisols with relatively high smectite clays have the capacity to swell significantly when moist as well as to shrink and crack when dry (FAO, 2006;Gidigasu and Gawu, 2013;Azinwi Tamfuh et al, 2016;Diaz et al, 2016). This pedoturbation is vital in explaining some soil (0 physical features (wide-opened cracks in the dry season, surface ponding in the rainy season, slickensides) and pedogenic processes (Kovda et al, 2017). The void ratios, high at field capacity and low at oven-dry state, are within the limits of 0.30 (moist) and 1.50 (dry) typical of expansive clays, but much higher than values reported for organic horizons (Jones and Holtz, 1973;Sridharan and Nagaraj, 2010).…”

Section: Specificities Of the Studied Vertisolsmentioning

confidence: 99%

“…The surficial desiccation cracks of vertisols have several indirect effects on the crop performance (Kovda et al, 2017). Due to shrinkage and cracking, the water is not readily available to the roots, although the cracks might favour infiltration of water to deeper parts of the profile following the first rains (Eswaran and Cook, 1988;Pal et al, 2012).…”

Section: Repercussions Of Moisture Properties On Agricultural Managemmentioning

confidence: 99%

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Moisture content, moisture-related properties and agricultural management strategies of the Benue floodplain vertisols in North Cameroon

Tamfuh¹,

Woumfo²,

Temgoua³

et al. 2018

Afr. J. Agric. Res.

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Vertisols are widespread in North Cameroon, but are undercultivated due to difficulties linked to their shrink-swell behaviour under different moisture conditions. Eighteen vertisol samples from five profiles representative of the studied area (Benue floodplain in North Cameroon) were studied to establish a relationship between moisture and physico-chemical characteristics and supplement data for planning sustainable agricultural management. The main results revealed that the soils are deep, dark grey, heavy clayey, with high coefficients of linear extensivity, low organic matter and low electrical conductivity. At field capacity, they showed a very low bulk density, high porosity and a high void ratio. Oven-dry soils exhibited very high bulk density, very low porosity and very low void ratio. This high reversibility of properties with changing moisture content is related to high smectitic mineralogy. The moisture properties revealed very high water-holding capacity, very high available water and very high readily available water. Most of the physico-chemical characteristics correlated well with the moisture parameters. The principal component analysis revealed a reduction of 17 initial variables to two principal components (PC1 and PC2) explaining over 70% of the total variance. The PC1 clustered 12 soil and soil moisture variables indicating strong correlation between moisture and physicochemical properties. Management practices for crop production must be primarily directed at moisture control.

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Section: Specificities Of the Studied Vertisolsmentioning

confidence: 99%

Section: Repercussions Of Moisture Properties On Agricultural Managemmentioning

confidence: 99%

Moisture content, moisture-related properties and agricultural management strategies of the Benue floodplain vertisols in North Cameroon

Tamfuh¹,

Woumfo²,

Temgoua³

et al. 2018

Afr. J. Agric. Res.

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“…В настоящий момент выделены следующие основные ареалы распространения слитых и слитизированных почв ЕТР: Северный Кавказ (Ковда, 1992; Хитров, 2003), Среднее и Нижнее Поволжье (Хитров, Роговнева, 2014; Турсина, 1973), Кубано-Приазовская низменность и Тамань (Хитров, Роговнева, 2017; Хитров и др., 2015), а также Центрально-Черноземный регион (Хитров и др., 2013). Наиболее северной (экстремальной) точкой обнаружения слитых почв является Забайкалье (Kovda, 2017).…”

Section: Introductionunclassified

Morphology, mineralogical composition and genesis of vertisols in liman Bolshoi (Volgograd region)

Каганова

Варламов

Churilin

et al. 2021

DSB

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The morphological structure of the profiles of two vertisols on microelevations of the gilgai complex of the Bolshoi liman (Svetloyarsk district of the Volgograd region) was studied. Despite the same microrelief position and equal relative heights of microelevations, morphological differences in the profiles at the subtype level were revealed. In one of the profiles, due to the higher humidity, the signs of vertisol genesis were less pronounced. Whereas in the second, more pronounced signs of vertic processes were described – slickensides with 15–30 cm length, smaller slickensides up to 10 cm, wedge-shaped aggregates. The proportion of the clay fraction in the mixed horizons, obtained by the Gorbunov method, was 45– 52%. Analysis of the qualitative mineralogical composition of the clay (<1μm) fractions showed that the smectite phase is represented mainly by disordered and mixed-layered smectite-illite formations. Individual illite belongs to the biotite variety according to the filling of the octahedral layer. Analysis of the ratio of the main mineral phases showed the predominance of illite (53–87%) in all soil samples. In the first pit an increase in the proportion of the smectite component with depth (from 1 to 35%) is noted. In the second pit, there are no regularities in the distribution of mineral phases (fluctuations within 24–37%), which may be associated with the involvement of chocolate clays layers in the profile during soil formation. Mineralogical analysis of chocolate clays (parent rocks) showed their high heterogeneity depending on the depth of the studied layer. No correlation was found between the severity of the signs of vertic processes and the proportion of the swelling component. Illustration of the stages of the formation of the soil cover on the investigated plot of the liman is given. The main reasons that led to the formation of different soils on microelevations are the unevenness of the “squeezing out” of soil blocks upward in the process of microrelief formation in combination with local erosion.

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“…Despite the high production potential, vertisol needs adequate management [46] due to difficulty of operating it mechanically. The high moisture content induces clay swelling and intervention for tillage operations cannot be done within the period of liquid and plastic states [47]. This study aimed to evaluate compactness of a no-till vertisol field crop and find spatial correlation between compacted clusters and their physicochemical soil properties through development of a pedotransfer function linking Ss to Pc.…”

Section: Introduction mentioning

confidence: 99%

Untitled

2017

JAST-A

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This study evaluated compaction level of a 15-year old no-till vertisol field crop (40.91% clay, 44.16% loam and 14.93% sand) having organic matter contents of 2.23% and 2.91% in 0-10 cm and 10-20 cm profiles, respectively. The bulk density ranged from 1.30 g/cm 3 to 1.80 g/cm 3 in the field boundaries, and from 1.01 g/cm 3 to 1.40 g/cm 3 in its center. The field showed a gradient of limestone from 3% to 13%. Measurements were done to evaluate soil strength (cone index) and soil plasticity (Atterberg limits). The soil strength showed different levels of compaction from 4.5 MPa to 16 MPa to distinct five spatial clusters in the field. The soil compactness was related to limestone gradient according the correlation found between the soil strength and limestone levels. The soil plasticity test showed occurrence of plastic limits when the moisture content decreased from 26% to 15% within 5 d interval. The Atterberg limits showed the importance of respecting intervention delays to avoid soil compaction due to its plasticity. A pedotransfer function was developed using soil parameters of texture, organic matter, bulk density, cohesion, internal friction angle and moisture content to compute its precompression stress. Results showed importance of compaction in the field extremities due to importance of machines/tools traffic without avoiding cropping interventions during soil plasticity state. The soil strength (as measured value) was correlated to precompression stress (as estimated values) to show the importance of using pedotransfer function as significant method to evaluate indirectly compactness or susceptibility to compaction of the studied vertisol.

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Vertic soils and Vertisols in cryogenic environments of southern Siberia, Russia

Cited by 23 publications

References 16 publications

Moisture content, moisture-related properties and agricultural management strategies of the Benue floodplain vertisols in North Cameroon

Moisture content, moisture-related properties and agricultural management strategies of the Benue floodplain vertisols in North Cameroon

Morphology, mineralogical composition and genesis of vertisols in liman Bolshoi (Volgograd region)

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