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Spaccini, Riccardo; Zena, A.; Igwe, C. A.; Mbagwu, J.S.C.; Piccolo, Alessandro

doi:10.1023/a:1010714919306

Cited by 86 publications

(13 citation statements)

References 45 publications

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“…Agricultural soil has 50-75% less C stocks compare to reference site which is under native forest (Spaccini et al, 2001). revealed that organic carbon content in kitchen garden based land use system is highest (26.1 g kg -1 ) followed by natural forest (23.6 g kg -1 ) and lowest under low land paddy (9.1 g kg -1 ).…”

Section: Soil Organic Carbonmentioning

confidence: 89%

Effect of Cultivation on Organic Carbon Pools and Nutrient Availability in Soil under Different Land Use System: A Review

Kaushik¹,

Raj²,

Rani³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Section: Soil Organic Carbonmentioning

confidence: 89%

Effect of Cultivation on Organic Carbon Pools and Nutrient Availability in Soil under Different Land Use System: A Review

Kaushik¹,

Raj²,

Rani³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…[32], for further details). Soil properties, isolation and purification procedures, and GHA characteristics are reported elsewhere [32,33].…”

Section: Humic Acidmentioning

confidence: 99%

“…[32], for further details). Soil properties, isolation and purification procedures, and GHA characteristics are reported elsewhere [32,33]. The previously freeze-dried GHA was suspended in distilled water and titrated to pH 7 with a CO 2 -free solution of 0.5 mol L −1 KOH by an automatic titrator (VIT 90 Videotitrator, Radiometer, Copenhagen, Denmark) under N 2 atmosphere and stirring.…”

Section: Humic Acidmentioning

confidence: 99%

Europium(III) complexed by HPSEC size-fractions of a vertisol humic acid: Small differences evidenced by time-resolved luminescence spectroscopy

Reiller

Brevet

Nebbioso

et al. 2011

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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The size fractionation of a humic acid (HA) by high performance size exclusion chromatography (HPSEC) was used as a proxy for the filtration effect during HA transport through a porous medium with minimum specific chemical interactions. The modification of the Eu(III)-HA complexes' formation with the different size-fractions, as compared to the bulk HA, was studied in time-resolved luminescence spectroscopy (TRLS). Clear modifications in Eu(III)-HA complexes' structures were shown and related to the molecular characteristics of the separated size-fractions. The properties of most of size-fractions did not induce a major alteration of the affinity towards Eu(III). Only the most hydrophilic fractions eluted in the tail of the chromatographic peak, representing about 11% of total fractions-weight, gave some significantly different parameters. Using a simplistic complexation model, it was found that the available complexation sites decreased with the size reduction of humic fractions.

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“…A number of scholars have discussed the relevance of macro aggregates in promoting crop establishment, resistance of soil to water erosion and enhanced infiltration (Anger & Giroux, 1996;Spaccini, Zena, Igwe, Mbagwu, & Piccolo, 2001;Eynard, Schumacher, Linstrom, & Malo, 2004). Soil aggregation and structural stability have also been discussed using various indices (Pietola et al, 2003), but no universal prescriptions have been offered on which of these indices is preferred.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic Conductivity and Aggregation of Fine-Textured Soil Under Intensive Cattle Grazing

Udom¹,

Nuga²

2014

JAS

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Information on hydraulic conductivity and macro-and micro-aggregate stability is needed for evaluating the ease with which soils slake and erode when in contact with water. In fine-textured soils, it will provide information on ponding of water and decrease in hydraulic gradient with wetting. This study was conducted to determine changes in hydraulic conductivity and macro-and micro-aggregate stability of a fine-textured submerged soil under intense cattle grazing for 15 years. Hydraulic conductivity of the cattle grazing soil ranged from very slow (0.46 cm hr -1 ) to slow (19.56 cm hr -1 ) in the top 0-25 cm depth, and attained near zero permeability (0.15 cm hr -1 ) before 75 cm depth. Permeability was rapid (21.1 to 30.06 cm hr -1 ) throughout the profile in the non-cattle grazing soil. Organic residues from cattle grazing activities raised the soil total organic carbon to as high as 72 g kg -1 in the top 0-25 cm depth. Wet trampling of organic residues from cattle excreta induced greater soil swelling and loss of soil strength resulting in low aggregated silt and clay (ASC) and clay flocculation index (CFI) within the 25-75 cm depth. Clay dispersion index (CDI) showed significant negative (P < 0.05) relationships with mean weight diameter (MWD) of water stable aggregates and saturated hydraulic conductivity (r = -0.631 and -0.596 respectively). Soil parameters controlling water storage and infiltration in such soils need to be increasingly studied to increase the area of land available for crop production and reduce soil erosion since such soils usually have high chemical fertility status.

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Cited by 86 publications

References 45 publications

Effect of Cultivation on Organic Carbon Pools and Nutrient Availability in Soil under Different Land Use System: A Review

Effect of Cultivation on Organic Carbon Pools and Nutrient Availability in Soil under Different Land Use System: A Review

Europium(III) complexed by HPSEC size-fractions of a vertisol humic acid: Small differences evidenced by time-resolved luminescence spectroscopy

Hydraulic Conductivity and Aggregation of Fine-Textured Soil Under Intensive Cattle Grazing

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