Stabilization of soil hydraulic properties under a long term no-till system

Lozano, Luis Alberto; Soracco, Carlos Germán; Buda, Vicente S.; Sarli, Guillermo Oliverio; Filgueira, R. R.

doi:10.1590/s0100-06832014000400024

Cited by 19 publications

(15 citation statements)

References 51 publications

(86 reference statements)

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“…However, cases where the above-mentioned natural stabilization of soil properties are not uncommon as a natural soil compaction was reported even at the end of an annual growth cycle [67,73]. Past this time, if a soil is no longer tilled, the literature agrees that the above-mentioned natural stabilization of soil properties may occur after about five to six years [17,76].…”

Section: Discussionmentioning

confidence: 98%

Effects of No-Tillage and Conventional Tillage on Physical and Hydraulic Properties of Fine Textured Soils under Winter Wheat

Castellini

Fornaro

Garofalo

et al. 2019

Water

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The conversion from conventional tillage (CT) to no-tillage (NT) of the soil is often suggested for positive long-term effects on several physical and hydraulic soil properties. In fact, although shortly after the conversion a worsening of the soil may occur, this transition should evolve in a progressive improvement of soil properties. Therefore, investigations aiming at evaluating the effects of NT on porous media are advisable, since such information may be relevant to better address the farmers’ choices to this specific soil conservation management strategy. In this investigation, innovative and standard methods were applied to compare CT and NT on two farms where the conversion took place 6 or 24 years ago, respectively. Regardless of the investigated farm, results showed negligible differences in cumulative infiltration or infiltration rate, soil sorptivity, saturated hydraulic conductivity, conductive pores size, or hydraulic conductivity functions. Since relatively small discrepancies were also highlighted in terms of bulk density or soil organic carbon, it was possible to conclude that NT did not have a negative impact on the main physical and hydraulic properties of investigated clay soils. However, a significantly higher number of small pores was detected under long-term NT compared to CT, so we concluded that the former soil was a more conductive pore system, i.e., consisting of numerous relatively smaller pores but continuous and better interconnected. Based on measured capacity-based indicators (macroporosity, air capacity, relative field capacity, plant available water capacity), NT always showed a more appropriate proportion of water and air in the soil.

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Section: Discussionmentioning

confidence: 98%

Effects of No-Tillage and Conventional Tillage on Physical and Hydraulic Properties of Fine Textured Soils under Winter Wheat

Castellini

Fornaro

Garofalo

et al. 2019

Water

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“…The increase of u ma toward AH could be attributed to the crop. The maize roots are strong and create continuous macropores (Fahad et al, 1982;Bathke and Blake, 1984;Lozano et al, 2014). Then, the increase on u ma from BS to V6 can be attributed to the decay of the roots of the previous crop (maize) during the studied season.…”

Section: Temporal Variation Of S Posd and Kmentioning

confidence: 97%

Temporal variation of soil sorptivity under conventional and no-till systems determined by a simple laboratory method

Villarreal

Soracco

Lozano

et al. 2017

Soil and Tillage Research

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Soil water sorptivity (S) is an important property that measures the soil capacity to take water rapidly under capillary forces. Usually S is not included in soil laboratory routine experiments because there is not a widely accepted methodology for its determination. The objectives of this work were: i) to propose a modification on the Leeds-Harrison et al. (1994) method (LH) to determine S in undisturbed soil samples; and ii) to determine the temporal variation of S and saturated hydraulic conductivity (K 0) in a soil under conventional tillage (CT) and no-tillage (NT) treatments. Additionally, the influence of soil pore size distribution (PoSD) on S was analyzed. Undisturbed soil samples (5 cm height, 5 cm diameter) were collected from the upper 10 depth cm of each plot, from each treatment at four different times during a maize growing season (before seeding (BS), 6 leaf stage (V6), physiological maturity (R5) and after harvest (AH)). PoSD was determined in a sand box apparatus. After that, S was determined in the same samples using a modified Leeds-Harrison approach. For the proposed modification the difference between initial and final water content was actually gravimetrically measured in each sample, rather than considering it equal to the total porosity (TP). The proposed improvement was validated comparing the obtained S values with those calculated using standard one-dimension horizontal infiltration in sieved soil (0.098 vs 0.079 cm s À1/2 , respectively) and in calibrated sand (0.041 vs 0.040 cm s À1/2 , respectively). These differences were not significant. Both S and K 0 were significantly affected by the sampling time in both treatments (mean values ranged between 0.022 and 0.077 cm s À1/2 and 1.57 and 3.75 cm s À1 respectively). We did not find a significant dependence of S with three pore size ranges analyzed. The proposed improvement of the Leeds-Harrison method allowed determining the temporal variation of S in representative undisturbed soil samples.

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“…However, other authors found that soil physical properties vary temporally under NT. Lozano et al (2014) found that after a long period under NT, the porous system configuration and K of a Argiudoll from the pampas region did not reach steady values, regardless of the specific time in the crop sequence. Moreira et al (2016) concluded that soil physical properties under NT vary during the crop growing season.…”

Section: Introductionmentioning

confidence: 93%

“…The increase in ε ma and ε me from BS to V6 can be attributed to decay of the roots of the previous crop (corn) during the season studied. Corn roots have been reported to create vertical macropores (Lozano et al, 2014). The decrease in K 0 and in pore size fractions and connectivity in AH can be attributed to the high traffic intensity associated with harvest (Soracco, 2009;Soracco et al, 2012).…”

Section: Rev Bras Cienc Solo 2018;42:e0170408mentioning

confidence: 99%

“…Information on temporal variation of SPQ indicators is scarce in the literature (Alletto et al, 2015). Several authors emphasized that soil physical properties show temporal variation (Angulo-Jaramillo et al, 1997;Strudley et al, 2008;Alletto and Coquet, 2009;Hu et al, 2009;Afzalinia and Zabihi, 2014) during the crop season (Angulo-Jaramillo et al, 1997;Bodner et al, 2013) and during the crop rotation sequence (Lozano et al, 2014). Total porosity (TP) and K increase with tillage and decrease during the crop season under CT (Angulo-Jaramillo et al, 1997;Bormann and Klaassen, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Temporal Variation of Soil Physical Quality under Conventional and No-Till Systems

Soracco¹,

Lozano²,

Villarreal³

et al. 2018

Rev. Bras. Ciênc. Solo

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Determination of soil physical quality (SPQ) is very important because it is related to many important soil processes. However, it is not clear which indicators should be considered in this evaluation, and information about temporal variation of SPQ under different soil tillage systems is scarce. The aim of this study was to determine the effects of no tillage (NT) and conventional tillage (CT) on temporal variation of capacity SPQ indicators [bulk density (BD), macroporosity (Pmac), air capacity (AC), plant available water capacity (PAWC), relative field capacity (RFC), Dexter's (S), and structural stability index (SSI)], and dynamic SPQ indicators [field saturated hydraulic conductivity (K 0), water-conducting macroporosity (ε ma), and mesoporosity (ε me); and pore continuity indexes based on water flux of total porosity (C W TP), of macroporosity (C W mac), and of mesoporosity (C w mes)]. Additionally, the effect of the soil management system on corn yield was evaluated. Measurements and determinations were made at four different moments/cropping stages in the corn growing season (BS: before seeding; V6: six leaf stage; R5: physiological maturity; and AH: after harvest). Capacity SPQ indicators were derived from the soil water retention curve determined using sand box and pressure chambers, and dynamic SPQ indicators were derived from field infiltration data measured using a tension disc infiltrometer. Most capacity SPQ indicators were affected by the moment/cropping stage in which samples were taken, but followed similar trends and had similar values under both treatments, particularly in the AH stage. Dynamic SPQ indicators varied differently during the growing season depending on the management system. Under NT, most dynamic indicators increase from BS to V6 and decrease again at AH, whereas under CT, they follow a different trend, decreasing from BS to V6, remaining constant until R5, and increasing at AH. Corn yield was lower under CT (NT: 10,939 kg ha-1 ; CT: 8,265 kg ha-1). These results emphasize the need to include dynamic SPQ indicators, and their temporal variation when evaluating cropping systems with the aim of modeling crop yields. The capacity SPQ indicators were not able to distinguish between treatments.

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Stabilization of soil hydraulic properties under a long term no-till system

Cited by 19 publications

References 51 publications

Effects of No-Tillage and Conventional Tillage on Physical and Hydraulic Properties of Fine Textured Soils under Winter Wheat

Effects of No-Tillage and Conventional Tillage on Physical and Hydraulic Properties of Fine Textured Soils under Winter Wheat

Temporal variation of soil sorptivity under conventional and no-till systems determined by a simple laboratory method

Temporal Variation of Soil Physical Quality under Conventional and No-Till Systems

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