Physical Properties of Soil Structures Identified by the Profil Cultural under Two Soil Management Systems

Macedo, Sônia de Fátima Schilickmann; Grimaldi, Michel; Medina, C. C.; Cunha, José Maurício da; Guimarães, María de Fátima; Filho, João Tavares

doi:10.1590/18069657rbcs20160503

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…Soil physical properties (texture, bulk density, aggregation etc.) are affected by many factors that change vertically, laterally across fields and temporally in response to climate, cultural and human activity [1,2]. Since variability in physical properties directly affects the plant growth, nutrients and water dynamics and other soil processes, in the depth knowledge of vertical changes in soil physical properties are necessary to understand the physical behaviour of soils at spatial scale [3,4].…”

Section: Introductionmentioning

confidence: 99%

Variability in Some Physical Properties of Vertisols of Three Permanent Bench Mark Sites under Rice-wheat Cropping System in Jabalpur District, Madhya Pradesh, in India

Pandey

Upadhyay

et al. 2020

CJAST

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The study was carried out for vertical characterization of soils at three permanent benchmark sites (Udna, Khamaria and Magarmuha) of Jabalpur district for their physical properties under the Rice-Wheat cropping system. Variability in the proportion of primary soil particles (texture), bulk density, distribution of different sized soil aggregates and mean weight diameter (MWD) of soil aggregates along the depths were studied as these influence the water and nutrients retention and release behaviour of soil. A total of 45 undisturbed soil samples were collected from selected sites at 0-20, 20-40, 40-60, 60-80 and 80-100 cm depths and brought to the laboratory for their characterization and the data thus obtained were analysed in split-plot design taking sites as main plot and depth as sub-plot treatments. Results showed that variability in the sand, silt and clay contents, bulk density, fractions of different size soil aggregate (>5.0, 5.0-2.0, 2.0-1.0, 1.0-0.5,0.5-0.25,0.25-0.1 and <0.10 mm) and mean weight diameter of soil aggregates were significant across the sites and soil depths. However, the interaction effect of sites and soil depth on the above properties was found non-significant except for fraction of < 0.1 mm size aggregate. It has been analysed from the study that sand, silt and clay contents, bulk density, fractions of different size aggregate and mean weight diameter of soil aggregates vary significantly (ρ=0.05) at spatially and vertically.

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Section: Introductionmentioning

confidence: 99%

Variability in Some Physical Properties of Vertisols of Three Permanent Bench Mark Sites under Rice-wheat Cropping System in Jabalpur District, Madhya Pradesh, in India

Pandey

Upadhyay

et al. 2020

CJAST

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Spatial variability of the physical quality of soil from management zones

Oliveira¹,

Mayi²,

Marchão³

et al. 2019

Precision Agric

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Is just considering texture enough to define compaction on the basis of soil density?

2023

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The bulk density values indicative of compaction in clayey soils correspond to a wide range of values (1.30-1.47 Mg m-3), due to the diverse types of soil management. Our hypothesis is that if we consider bulk density values within similar management groups (those that fall to the ground and those that do not fall), the values will be more accurate within each management group. Our objective in this work was to analyze using the concepts of (Yates & Cochran, 1938; Whitehead, 2002) what is a suitable statistical way of grouping these results to reach a consensus regarding a tested hypothesis, the greatest number of density values surveyed between 1977 and 2021, considered for the study of compaction in clayey Oxisols under different managements, to verify whether our hypothesis will be confirmed. We selected 1,521 studies with bulk densities in the literature, corresponding to 44 years (1977 and 2021), which were analyzed by a statistical technique that integrates the results of two or more independent studies on the same subject and combines them into a summary measure (portion forestry). From the data collected in the literature, it was possible to separate two groups of bulk density and management in clayey soils indicative of compaction: the managements that perform little or no manipulation of the soil, such as pasture and no-tillage, densities between 1.41-1.45 Mg.m-3 (average 1.43 Mg m-3), and for the others, such as conventional plowing and minimum tillage, soil densities between 1.31-1.38 Mg.m-3 (average 1.35 Mg m-3). Finally, we conclude that compaction must be analyzed considering the texture and type of soil management.

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Physical Properties of Soil Structures Identified by the Profil Cultural under Two Soil Management Systems

Cited by 3 publications

References 33 publications

Variability in Some Physical Properties of Vertisols of Three Permanent Bench Mark Sites under Rice-wheat Cropping System in Jabalpur District, Madhya Pradesh, in India

Variability in Some Physical Properties of Vertisols of Three Permanent Bench Mark Sites under Rice-wheat Cropping System in Jabalpur District, Madhya Pradesh, in India

Spatial variability of the physical quality of soil from management zones

Is just considering texture enough to define compaction on the basis of soil density?

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