Impact of three and seven years of no-tillage on the soil water storage, in the plant root zone, under a dry subhumid Tunisian climate

Jemai, Imene; Aïssa, Nadhira Ben; Guirat, Saida Ben; Ben-Hammouda, Moncef; Gallali, Tahar

doi:10.1016/j.still.2012.07.008

Cited by 107 publications

(67 citation statements)

References 60 publications

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“…Sometimes, critical values of MA are not restrictive to root development and crop yield in NT because of the tolerance of the species (Reichert et al, 2009). Jemai et al (2013) also observed that soil under CT had higher MA than that under NT in the 0-10 cm layer. However, seven years of NT improved MA more than three years of NT, probably, according to the authors, by transformation of a part of fine pores into macropores.…”

Section: Resultsmentioning

confidence: 65%

The effects of land use and soil management on the physical properties of an Oxisol in Southeast Brazil

Junior

Corá

Lal

2014

Rev. Bras. Ciênc. Solo

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Soils of the tropics are prone to a decrease in quality after conversion from native forest (FO) to a conventional tillage system (CT). However, the adoption of no-tillage (NT) and complex crop rotations may improve soil structural quality. Thus, the aim of this study was to evaluate the physical properties of an Oxisol under FO, CT, and three summer crop sequences in NT: continuous corn (NTcc), continuous soybean (NTcs), and a soybean/corn rotation (NTscr). Both NT and CT decreased soil organic carbon (SOC) content, SOC stock, water stable aggregates (WSA), geometric mean diameter (GMD), soil total porosity (TP), macroporosity (MA), and the least limiting water range (LLWR). However they increased soil bulk density (BD) and tensile strength (TS) of the aggregates when compared to soil under FO. Soil under NT had higher WSA, GMD, BD, TS and microporosty, but lower TP and MA than soil under CT. Soil under FO did not attain critical values for the LLWR, but the lower limit of the LLWR in soils under CT and NT was resistance to penetration (RP) for all values of BD, while the upper limit of field capacity was air-filled porosity for BD values greater than 1.46 (CT), 1.40 (NTscr), 1.42 (NTcc), and 1.41 (NTcs) kg dm-3. Soil under NTcc and NTcs decreased RP even with the increase in BD because of the formation of biopores. Furthermore, higher critical BD was verified under NTcc (1.62 kg dm-3) and NTcs (1.57 kg dm-3) compared to NTscr and CT (1.53 kg dm-3).

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Section: Resultsmentioning

confidence: 65%

The effects of land use and soil management on the physical properties of an Oxisol in Southeast Brazil

Junior

Corá

Lal

2014

Rev. Bras. Ciênc. Solo

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“…The Mi correlations were very strong for the θ retained at the 30-µm pore size (NT and CT) and strong (CT) and moderate (NT) at the 0.2-µm pore size (Table 2). Therefore, increases in the BD increased the Mi and, consequently, a large amount of water remained retained in smaller pores (Jemai et al, 2013).…”

Section: Resultsmentioning

confidence: 98%

Influence of physical attributes and pedotransfer function for predicting water retention in management systems

Auler

Pires

Pineda

2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe aims of this study were to evaluate the effects of the soil structural physical attributes on the water retention and to develop pedotransfer functions (PTFs) for the estimation of the soil water content (θ) at different matric potentials of a Dystrophic Red Latosol (Hapludox) under conventional tillage (CT) and no-tillage (NT) soil management systems. The effects of long-term CT and NT (over 25 years) management on the soil bulk density (BD), total porosity (TP), macroporosity (Ma), microporosity (Mi) and water retention were investigated. The PTFs were developed to predict θ and used to evaluate the soil water retention curve only for the NT system. The NT system was characterized by smaller values of the soil BD and higher values of the soil TP and Mi than the CT system. The NT system exhibited a higher θ retained than the CT system for the pore-size interval of 0.2-30 µm. However, the CT system exhibited a large amount of water retention for pores smaller than 0.2 µm. The PTFs were utilized to estimate θ at matric potentials of -1, -3, -6, -10, -33, -100, -400, -800, and -1,500 kPa with adequate accuracy. The soil BD, Ma, Mi and sand content were the main variables considered to estimate θ for the different matric potentials evaluated.Atributos físicos e funções de pedotransferência para estimativa da retenção de água em sistemas de manejo R E S U M OOs objetivos deste estudo foram avaliar os efeitos de atributos físicos estruturais do solo sobre a retenção de água e desenvolver funções de pedotransferência (FPT) para a estimativa de conteúdos de água (θ) em diferentes potenciais mátricos de um Latossolo Vermelho distrófico em sistema convencional (SC) e sistema plantio direto (SPD). Os efeitos de longo prazo dos manejos SC e SPD (mais de 25 anos) sobre a densidade do solo (DS), porosidade total (PT), macroporosidade (Ma), microporosidade (Mi) e retenção de água foram investigados. As FPT foram desenvolvidas para predizer os θs utilizados na determinação da curva de retenção de água apenas para o SPD. O SPD apresentou menor DS e maior PT e Mi que o SC. O SPD aumentou o conteúdo de água retido em poros de tamanho entre 0,2 e 30 µm, em relação ao SC. No entanto, o SC apresentou maior conteúdo de água retido em poros com raio menor que 0,2 µm. As FPTs utilizadas para estimar θ para os potenciais mátricos de -1, -3, -6, -10, -33, -100, -400, -800 e -1500 kPa tiveram acurácia adequada. A DS, Ma, Mi e teor de areia foram as principais variáveis consideradas para estimar o conteúdo de água nesses potenciais mátricos. Key words:no-tillage conventional tillage soil porosity Palavras-chave: sistema plantio direto sistema plantio convencional porosidade do solo

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“…The available water capacity (AWC) was computed as the difference in volumetric water content at field capacity (− 33 kPa), and at permanent wilting point (− 1500 kPa) (Dane and Hopmans 2002; Jemai et al 2013).…”

Section: Methodsmentioning

confidence: 99%

Assessing the Accuracy of Soil and Water Quality Characterization Using Remote Sensing

Obade

Lal

Moore

2014

Water Resour Manage

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Assessing the risks of agricultural management practices on agro-ecosystem sustainability has special relevance in Ohio, USA due to the states prominence in agricultural production. However, identifying detrimental management practices remains controversial, a situation that may explain the inability to halt the recurring harmful algal blooms in inland waters, or the build-up of nutrients in the agricultural soils. Thus, detailed and accurate information is required to identify soils and water susceptible to degradation, and to support counteractive remedial measures. In this study soil and water spectral reflectance data were acquired with an Analytical Spectral Device, and modeled with laboratory measured physical and chemical properties using the Analysis of Variance (ANOVA) and decision trees. Results reveal no site differences in pH for the water, but the differences in electrical conductivity (EC) were significant. Similarly, the pH for soils did not vary significantly with depth increments. However, the no till (NT) managed soils had significantly higher pH. EC varied with depth of the water, whereas the soil carbon: nitrogen (C/N) ratio varied with management in 4 out of 5 sites. Finally, this study shows that remotely sensed data can be utilized to effectively characterize agricultural management practices based on inherent soil and water properties, thus providing information critical for assessing the efficacy of Water Quality Trading initiatives.

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Impact of three and seven years of no-tillage on the soil water storage, in the plant root zone, under a dry subhumid Tunisian climate

Cited by 107 publications

References 60 publications

The effects of land use and soil management on the physical properties of an Oxisol in Southeast Brazil

The effects of land use and soil management on the physical properties of an Oxisol in Southeast Brazil

Influence of physical attributes and pedotransfer function for predicting water retention in management systems

Assessing the Accuracy of Soil and Water Quality Characterization Using Remote Sensing

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