Changes in some physical properties of Mollisols induced by supplemental irrigation

Pilatti, Miguel Angel; Imhoff, Silvia; Ghiberto, Pablo Javier; Marano, Roberto Paulo

doi:10.1016/j.geoderma.2005.08.007

Cited by 16 publications

(6 citation statements)

References 18 publications

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“…Physical quality degradation in these soils exacerbates these problems as evidenced in Argiudolls and Hapludolls irrigated with sodic-bicarbonated waters and in Argiudolls when conventional tillage or no-till systems were applied without the inclusion of adequate rotations (Pilatti et al, 2006;Ghiberto et al, 2007;Imhoff et al, 2010 …”

Section: Soil Physical Quality Indicatorsmentioning

confidence: 99%

Soil physical quality of Mollisols quantified by a global index

Ghiberto

Imhoff

Libardi

et al. 2015

Sci. agric. (Piracicaba, Braz.)

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Indicators synthesizing the state of the structural quality and the function of the porous system are useful for assessing soil production capacity as well as the way it may serve natural ecosystems. This research aimed (i) to determine indicators of the state and function of the porous system, (ii) to use them to derive a global index to characterize the soil physical quality, and iii) to establish a reference pore-size distribution curve for Mollisols from the province of Santa Fe (Argentina). Sixty water retention curves (WRC) of A and B horizons of Mollisols, with clay varying between 119 and 538 g kg . Both the high silt content and low organic matter content confer on the soil characteristics with low stability, excess of small pores and low porosity of the macropore domain. Consequently, the capacity to quickly drain the water excess and allow root proliferation was not optimal, possibly due to the high silt or clay content and the low sand content, characteristic of the soil matrix of these Mollisols.

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Section: Soil Physical Quality Indicatorsmentioning

confidence: 99%

Soil physical quality of Mollisols quantified by a global index

Ghiberto

Imhoff

Libardi

et al. 2015

Sci. agric. (Piracicaba, Braz.)

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“…Skene and Oades (1995) tested the amount of total organic carbon (TOC) and clay dispersed and released from soil cores and reported significant correlations between TOC and suspended clay. Soil aggregate stability is also impacted with high sodium and bicarbonate irrigation water which in turn reduces water infiltration (Pilatti et al 2006). Aggregate stability is associated with glomalin reactive soil proteins and carbon associated with wax compounds (Pikul et al 2009); however the potential release of proteins from soil disaggregation into our surface waters by irrigating turf grass with sodic water was not supported by our findings.…”

Section: Effect Of Urban Land Management On Dissolved Organic Carbonmentioning

confidence: 99%

Dissolved organic carbon and nitrogen in urban and rural watersheds of south-central Texas: land use and land management influences

et al. 2009

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Dissolved organic carbon (DOC) and nitrogen (DON) concentrations were quantified in urban and rural watersheds located in central Texas, USA between 2007 and 2008. The proportion of urban land use ranged from 6 to 100% in our 12 study watersheds which included nine watersheds without waste water treatment plants (WWTP) and three watersheds sampled downstream of a WWTP. Annual mean DOC concentrations ranged 20.4-52.5 mg L -1 . Annual mean DON concentrations ranged 0.6-1.9 mg L -1 . Only the rural watersheds without a WWTP had significantly lower DOC concentrations compared to those watersheds with a WWTP but all the streams except two had significantly reduced DON compared to those with a WWTP. Analysis of the nine watersheds without a WWTP indicated that 68% of the variability in mean annual DOC concentration was explained by urban open areas such as golf courses, sports fields and neighborhood parks under turf grass. There was no relationship between annual mean DON concentration and any land use. Urban open area also explained a significant amount of the variance in stream sodium and stream sodium adsorption ratio (SAR). Ninetyfour percent of the variance in annual mean DOC concentration was explained by SAR. Irrigation of urban turf grass with domestic tap water high in sodium ([181 mg Na ? L -1 ) may be inducing sodic soil conditions in watershed soils in this region resulting in elevated mean annual DOC concentrations in our streams.

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“…The application of supplementary irrigation in humid zones, where the relationship between the applied water versus rain water is around 0.1, the EC showed little variation between irrigated and non-irrigated soil (Costa, 1999;Mon et al, 2007;Peinemann et al, 1998). In those environments, the rain water is sufficient to wash away the excess salts that accumulate during irrigation (Pilatti et al, 2006;Torres Duggan et al, 2012). Different letters represent statistical difference (P < 0.05) between treatment at each location.…”

Section: Effect Of Irrigation Water Quality On Soil Chemical Propertiesmentioning

confidence: 99%

“…The compaction and breakage of the soil heightens the adverse effects of the sodium (Frenkel et al, 1978). Water infiltration rates, soil dry-aggregation and wet-aggregate stability were negatively affected by changes between irrigation water and rain water, according to most of the documented cases (Pilatti et al, 2006).…”

Section: Introductionmentioning

confidence: 99%