Factors Influencing Soil Structural Stability within a Growing Season

Perfect, E.; Kay, B. D.; Loon, W.K.P. van; Sheard, R. W.; Pojasok, T.

doi:10.2136/sssaj1990.03615995005400010027x

Cited by 113 publications

(60 citation statements)

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“…These results are in agreement with Perfect et al (1990), who found a significant negative correlation between soil moisture and WSA. In our study, higher WSA values were noticed in the driest soils, rich in carbonates -UP, which is in agreement with Kemper and Rosenau (1984).…”

supporting

confidence: 93%

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

Muršec¹,

Lévêque²,

Chaussod³

et al. 2018

PLANT SOIL ENVIRON

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The impact of drip irrigation on structural stability of soil aggregates was studied in soils of an apple (Malus domestica Borkh.) orchard, developed on marl. The field study was carried out in a sloping (20%) terrain in the north-eastern Slovenia at three slope positions (upslope, mid-slope and downslope), involving a comparison of irrigated versus non-irrigated situations after 6 years of drip irrigation practice. Structural stability was studied in three soil layers (0–5, 5–15 and 15–30 cm) at the end of the irrigation season (in September). In the same samples, soil organic carbon, total carbonates and soil moisture contents were determined. Drip irrigation significantly reduced structural stability and soil organic carbon in the surface soil layer (0–5 cm), while total carbonates increased. Based on the whole set of data, structural stability was strongly positively correlated with total carbonates and negatively correlated with soil organic carbon. This means that the effect of higher level of organic matter mineralisation on structural stability, due to irrigation, is counterbalanced by the increase of total carbonates content in the fine textured calcareous soils. Thus, a negative effect of irrigation on soil organic carbon had less destructive consequences on structural stability than expected.

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supporting

confidence: 93%

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

Muršec¹,

Lévêque²,

Chaussod³

et al. 2018

PLANT SOIL ENVIRON

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“…The marked enhancement in the soil organic matter content may be due to rapid addition of organic matter by plant roots. In many studies similar effectiveness of cropping systems in improving organic carbon content of soil has been reported (Carter 1984;Wallace & Wallace 1986;Perfect et al 1990;Haynes & Francis 1993). Nelson et al (1996Nelson et al ( , 1997 observed that mineralization of carbon appreciably decreased with increasing soil sodicity and they suggested that retention of organic matter would be enhanced if added after reducing the exchangeable sodium percentage (ESP) of the soil.…”

Section: Discussionmentioning

confidence: 82%

Amelioration of a saline sodic soil through cultivation of a salt-tolerant grass Leptochloa fusca

et al. 2003

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Reclamation of saline lands seems difficult for climatic and economic reasons, but cultivation of salt-tolerant plants is an approach to increasing productivity and improvement of salt-affected wastelands. A five-year field study was conducted to evaluate the effects of growing a salt-tolerant species Leptochloa fusca (L.) Kunth (kallar grass) on chemical properties of a saline sodic soil irrigated with poor quality groundwater. Soil salinity, sodicity and pH decreased exponentially by growing kallar grass as a result of leaching of salts from surface (0–20 cm) to lower depths (>100 cm). Concentrations of soluble cations (Na+, K+, Ca2+ and Mg2+) and anions (Cl−, SO42− and HCO3−) were reduced through to greater soil depths. A significant decline in soil pH was attributed to release of CO2 by grass roots and solublization of CaCO3. Both soil salinity and soil pH were significantly correlated with Na+, Ca2+, Mg2+, K+, Cl−, HCO3− and sodium adsorption ratio (SAR). Significant correlations were found between soluble cations (Na+, Ca2+ and K+), soluble anions (Cl−, SO42− and HCO3−) and the SAR. In contrast, there were negative correlations between soil organic matter content and all chemical properties. The ameliorative effects on the soil chemical environment were pronounced after three years of growing kallar grass. Cultivation of kallar grass enhanced leaching and interactions among soil chemical properties and thus restored soil fertility. The soil maintained the improved characteristics with further growth of the grass up to five years suggesting that growing salt-tolerant plants is a sustainable approach to biological amelioration of saline wastelands.

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“…Roots are important sources of organic matter for preserving the soil structure, by exudation as well as decomposition (Perfect et al, 1990). Besides, roots that penetrate compact layers and then decompose, leave channels which favor water circulation and gas diffusion within the soil profile (Gonçalves et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Morphostructural characterization of soil conventionally tilled with mechanized and animal traction with and without cover crop

Ralisch

Almeida

Silva

et al. 2010

Rev. Bras. Ciênc. Solo

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SUMMARYThe structural stability and restructuring ability of a soil are related to the methods of crop management and soil preparation. A recommended strategy to reduce the effects of soil preparation is to use crop rotation and cover crops that help conserve and restore the soil structure. The aim of this study was to evaluate and quantify the homogeneous morphological units in soil under conventional mechanized tillage and animal traction, as well as to assess the effect on the soil structure of intercropping with jack bean (Canavalia ensiformis L.). Profiles were analyzed in April of 2006, in five counties in the Southern-Central region of Paraná State (Brazil), on family farms producing maize (Zea mays L.), sometimes intercropped with jack bean. The current structures in the crop profile were analyzed using Geographic Information Systems (GIS) and subsequently principal component analysis (PCA) to generate statistics. Morphostructural soil analysis showed a predominance of compact units in areas of high-intensity cultivation under mechanized traction. The cover crop did not improve the structure of the soil with low porosity and compact units that hamper the root system growth. In areas exposed to animal traction, a predominance of cracked units was observed, where roots grew around the clods and along the gaps between them.Index terms: soil tillage, cultural profile, morphological homogeneous units, structural recovering.(

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Factors Influencing Soil Structural Stability within a Growing Season

Cited by 113 publications

References 0 publications

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

Amelioration of a saline sodic soil through cultivation of a salt-tolerant grass Leptochloa fusca

Morphostructural characterization of soil conventionally tilled with mechanized and animal traction with and without cover crop

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