Use of humic substances as soil conditioners to increase aggregate stability

Piccolo, Alessandro; Pietramellara, Giacomo; Mbagwu, J.S.C.

doi:10.1016/s0016-7061(96)00092-4

Cited by 206 publications

(102 citation statements)

References 20 publications

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“…2: 66-71 Plant Soil Environ. Piccolo et al (1997) found that humic substances at medium (0.10 g/kg soil) but not at high (10 g/kg soil) concentrations had the highest aggregate-stabilizing effect. GRSP as a humic-like substance (Schindler et al 2007) might also exhibit such a similar effect.…”

Section: Resultsmentioning

confidence: 90%

Exogenous easily extractable glomalin-related soil protein promotes soil aggregation, relevant soil enzyme activities and plant growth in trifoliate orange

Wang

2015

Plant Soil Environ.

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Section: Resultsmentioning

confidence: 90%

Exogenous easily extractable glomalin-related soil protein promotes soil aggregation, relevant soil enzyme activities and plant growth in trifoliate orange

Wang

2015

Plant Soil Environ.

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“…The advantage of humic substances is the refractory nature of their chemical structures that makes them more resistant to microbial attacks. Piccolo et al (1997) reported that humic substances have a potential as soil conditioners in conversation practices aimed at increasing the structural stability of soils. Ersoy andŞeker (2004) reported that urban waste compost, cattle manure, chicken manure and leonardite improved soil aggregate stability values.Şeker (2003) reported that adding Portland cement and wheat straw to a soil having a crusting problem increased its aggregate stability; in turn seedling emergence of wheat was improved by decreased modulus of rupture and penetration resistance.…”

Section: Introductionmentioning

confidence: 99%

Influence of humic acid applications on modulus of rupture, aggregate stability, electrical conductivity, carbon and nitrogen content of a crusting problem soil

Gümüş¹,

Şeker²

2015

Solid Earth

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Abstract. Soil structure is often said to be the key to soil productivity since a fertile soil, with desirable soil structure and adequate moisture supply, constitutes a productive soil. Soil structure influences soil water movement and retention, erosion, crusting, nutrient recycling, root penetration and crop yield. The objective of this work is to study humic acid (HA) application on some physical and chemical properties in weakly structured soils. The approach involved establishing a plot experiment in laboratory conditions. Different rates of HA (control, 0.5, 1, 2 and 4 %) were applied to soil during three incubation periods (21, 42 and 62 days). At the end of the each incubation period, the changes in physicochemical properties were measured. Generally, HA addition increased electrical conductivity values during all incubation periods. HA applications decreased soil modulus of rupture. Application of HA at the rate of 4 % significantly increased soil organic carbon contents. HA applications at the rate of 4 % significantly increased both mean soil total nitrogen content and aggregate stability after three incubation periods (p < 0.05). Therefore, HA has the potential to improve the structure of soil in the short term.

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“…Charcoal may affect soil physical properties such as soil water retention and aggregate stability, leading to enhanced crop water availability and reduced erosion effects (Piccolo & Mbagwu, 1990;Piccolo et al, 1997). Tryon (1948) studied the effect of charcoal addition on the available moisture in soil of different textures.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the impact of charcoal production on soil hydrological behavior, runoff response and erosion susceptibility

Ayodele

Oguntunde

Joseph

et al. 2009

Rev. Bras. Ciênc. Solo

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The impact of charcoal production on soil hydraulic properties, runoff response and erosion susceptibility were studied in both field and simulation experiments. Core and composite samples, from 12 randomly selected sites within the catchment of Kotokosu were taken from the 0-10 cm layer of a charcoal site soil (CSS) and adjacent field soils (AFS). These samples were used to determine saturated hydraulic conductivity (Ksat), bulk density, total porosity, soil texture and color. Infiltration, surface albedo and soil surface temperature were also measured in both CSS and AFS. Measured properties were used as entries in a rainfall runoff simulation experiment on a smooth (5 % slope) plot of 25 x 25 m grids with 10 cm resolutions. Typical rainfall intensities of the study watershed (high, moderate and low) were applied to five different combinations of Ks distributions that could be expected in this landscape. The results showed significantly (p < 0.01) higher flow characteristics of the soil under charcoal kilns (increase of 88 %). Infiltration was enhanced and runoff volume reduced significantly. The results showed runoff reduction of about 37 and 18 %, and runoff coefficient ranging from 0.47-0.75 and 0.04-0.39 or simulation based on high (200 mm h -1 ) and moderate (100 mm h -1 ) rainfall events over the CSS and AFS areas, respectively. Other potential impacts of charcoal production on watershed hydrology were described. The results presented, together with watershed measurements, when available, are expected to enhance understanding of the hydrological responses of ecosystems to indiscriminate charcoal production and related activities in this region.Index terms: hydro-physical properties, infiltration, simulated runoff, watershed hydrology.(

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Use of humic substances as soil conditioners to increase aggregate stability

Cited by 206 publications

References 20 publications

Exogenous easily extractable glomalin-related soil protein promotes soil aggregation, relevant soil enzyme activities and plant growth in trifoliate orange

Exogenous easily extractable glomalin-related soil protein promotes soil aggregation, relevant soil enzyme activities and plant growth in trifoliate orange

Influence of humic acid applications on modulus of rupture, aggregate stability, electrical conductivity, carbon and nitrogen content of a crusting problem soil

Numerical analysis of the impact of charcoal production on soil hydrological behavior, runoff response and erosion susceptibility

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