Effects of exchangeable Ca:Mg ratio on the dispersion of soils some southern Nigeria soils.

Ogbonna, CS; Igwe, C. A.; Ogbonna, P. E.

doi:10.4314/as.v12i2.2

Cited by 1 publication

(1 citation statement)

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“…In this process, Na + also plays an essential role in the dispersion of soil colloids (Na + x FD: −0.71; p < 0.05). Colloid surfaces rich in Mg and Na ions tend to absorb less water due to the notable hydrated radius of Mg 2+ and Na + , weakening intermolecular forces that keep soil particles together and increasing clay dispersion [44]. The reduction in FD with increments of Mg and Na can cause deleterious effects on soil structure, such as a reduction in soil hydraulic properties, a decline in soil infiltration, increased surface sealing, and triggering soil erosion [45].…”

Section: Indicators From Soil Qualitymentioning

confidence: 99%

Assessment of Soil Quality of Smallholder Agroecosystems in the Semiarid Region of Northeastern Brazil

Macedo,

Lima,

de Almeida Alves Carneiro

et al. 2024

Land

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The assessment of soil quality is crucial for the sustainable development of agriculture in semiarid regions. Due to their sensitivity to management practices, soil chemical and physical quality indicators are used for investigating soil quality. This study aimed to assess the soil quality of smallholder agroecosystems from the Brazilian semiarid region. Soil physical and chemical attributes were screened using principal component analysis (PCA) and integrated into a weighted additive soil quality index (SQI). Soil quality was obtained using linear and non-linear scoring methods, a total data set (TDS), and a minimum data set (MDS). The soil quality of the agroecosystems was designated as being of moderate grade. The MDS for soil quality assessment includes cation exchange capacity, C stock, exchangeable sodium percentage, flocculation degree, pH, electrical conductivity, available P, and K+ from twenty-five indicators of the TDS. This MDS mainly reflects the input of manure and crop residues associated with moderate weathering of easily weatherable minerals given the semiarid conditions. The SQI obtained can be used to synthesize the information of the TDS and is a valuable tool to indicate the soil quality of agroecosystems; thereby, it can be used with indicators of sustainable management for application at a regional scale.

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Section: Indicators From Soil Qualitymentioning

confidence: 99%

Assessment of Soil Quality of Smallholder Agroecosystems in the Semiarid Region of Northeastern Brazil

Macedo,

Lima,

de Almeida Alves Carneiro

et al. 2024

Land

View full text Add to dashboard Cite

show abstract

Effects of exchangeable Ca:Mg ratio on the dispersion of soils some southern Nigeria soils.

Abstract: ABSTRACT) will be introduced to the soil which will bring about dispersion in the soil.

Cited by 1 publication

References 11 publications

Assessment of Soil Quality of Smallholder Agroecosystems in the Semiarid Region of Northeastern Brazil

Assessment of Soil Quality of Smallholder Agroecosystems in the Semiarid Region of Northeastern Brazil

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