Evaluating the effects of tillage techniques on soil hydro-physical properties in Guinea Savanna of Nigeria

Abu, S.T.; Abubakar, Idris

doi:10.1016/j.still.2012.09.003

Cited by 16 publications

(13 citation statements)

References 40 publications

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“…The experimental procedure consisted of a combination of both laboratory and field measurements, This was applied to obtain estimates of the physical quality of the soil which could be efficiently compared to those obtained in many other similar works (Abu and Abubakar, 2013;Aparicio and Costa, 2007;Cavalieri et al, 2009;Li et al, 2011;Oicha et al, 2010;Reynolds et al, 2007;Silva et al, 2011).…”

Section: Soil Sampling and Measurementsmentioning

confidence: 99%

“…For example, in a recent paper, Abu and Abubakar (2013) evaluated the effects on soil hydro-physical properties of four tillage techniques. The Authors highlighted the sensitivity of the physical indicators of the soil that were used in relationship to the modifications caused by different soil tillage methods, and concluded that the soil subjected to conventional tillage had poorer physical quality at all the depths measured.…”

Section: Introductionmentioning

confidence: 99%

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Comparing physical quality of tilled and no-tilled soils in an almond orchard in southern Italy

et al. 2013

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No-tillage (NT) is an alternative way of reducing costs and lessening the burden of working the land, but in essence it is a method of sustainable land use in dryland cropping systems. The physical quality of the soil is the fundamental factor that defines the sustainability of agro-ecosystems, and its evaluation can be obtained using both capacitive and dynamic indicators. The main objectives of this study were: i) to assess the physical quality of the soil in an almond orchard where long-term different soil tillage systems and weed control methods, such as NT with chemical control and surface tillage (ST), were used; and ii) to compare the indicators under consideration with the proposed reference values, using the information gathered to evaluate the effects of NT and ST. The following physical properties were determined: bulk density, air capacity, macroporosity, plant available water capacity, relative field capacity, Dexter's index, field saturated hydraulic conductivity, as well as the location (modal, median, and mean pore diameter) and shape (standard deviation, skewness, and kurtosis) parameters which corresponded to the equivalent pore size distribution functions. Our results showed that the physical soil indicators adopted were sufficiently sensitive to identify tillage-induced changes and then to quantify the physical quality of rigid to moderately expansive agricultural soils. After thirty years of NT, a set of capacitive indicators, along with measurements of hydraulic conductivity, used in conjunction with an optimal pore volume distribution and the water release curve, unanimously classified the quality of the studied soil as optimal or near optimal.

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Section: Soil Sampling and Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparing physical quality of tilled and no-tilled soils in an almond orchard in southern Italy

et al. 2013

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“…Thus, an increase in the BD or Mi caused a decrease in the amount of water retained for the 149-µm pore size. Processes that lead to increases in the BD affect the distribution of large pores responsible for water infiltration (Abu & Abubakar, 2013).…”

Section: Resultsmentioning

confidence: 99%

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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“…In this desert oasis and other such areas located in arid northwestern China, most of the fields belong to smallholder farmers, who usually follow different cropping pat-terns and tillage methods, resulting in a heterogeneity of soil hydrophysical properties (Salem et al, 2015;Ács, 2005;Abu and Abubakar, 2013). For the soil-moisture data-based method proposed in this paper, the spatial heterogeneity of the soil hydrophysical properties -which can be characterized by hydrophysical functions (soil water retention curve and soil water conductivity) and/or hydrophysical parameters (ρ b , θ s , θ fc , and θ w ) (Ács, 2005) -may restrict its applicability to a large agricultural area.…”

Section: Effects Of the Variances In Soil Hydrophysical Properties Onmentioning

confidence: 99%

Quantification of soil water balance components based on continuous soil moisture measurement and the Richards equation in an irrigated agricultural field of a desert oasis

Li¹,

Liu²,

Zhao³

et al. 2019

Hydrol. Earth Syst. Sci.

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Abstract. An accurate assessment of soil water balance components (SWBCs) is necessary for improving irrigation strategies in any water-limited environment. However, quantitative information on SWBCs is usually challenging to obtain, because none of the components (i.e., irrigation, drainage, and evapotranspiration) can be easily measured under actual conditions. Soil moisture is a variable that integrates the water balance components of land surface hydrology, and the evolution of soil moisture is assumed to contain the memory of antecedent hydrologic fluxes, and can thus be used to determine SWBCs from a hydrologic balance. A database of soil moisture measurements from six experimental plots with different treatments in the middle Heihe River basin of China was used to test the potential of a such a database for estimating SWBCs. We first compared the hydrophysical properties of the soils in these plots, such as vertical saturated hydraulic conductivity (Ks) and soil water retention features, for supporting SWBC estimations. We then determined evapotranspiration and other SWBCs using a method that combined the soil water balance method and the inverse Richards equation (a model of unsaturated soil water flow based on the Richards equation). To test the accuracy of our estimation, we used both indirect methods (such as power consumption of the pumping irrigation well and published SWBCs values at nearby sites) and the water balance equation technique to verify the estimated SWBCs values, all of which showed good reliability with respect to our estimation method. Finally, the uncertainties of the proposed methods were analyzed to evaluate the systematic error of the SWBC estimation and any restrictions regarding its application. The results showed significant variances among the film-mulched plots in both the cumulative irrigation volumes (652.1–867.3 mm) and deep drainages (170.7–364.7 mm). Moreover, the un-mulched plot had remarkably higher values in both cumulative irrigation volumes (1186.5 mm) and deep drainages (651.8 mm) compared with the mulched plots. Obvious correlation existed between the volume of irrigation and that of drained water. However, the ET demands for all of the plots behaved pretty much the same, with the cumulative ET values ranging between 489.1 and 561.9 mm for the different treatments in 2016, suggesting that the superfluous irrigation amounts had limited influence on the accumulated ET throughout the growing season due to the poor water-holding capacity of the sandy soil. This work confirmed that relatively reasonable estimations of the SWBCs in coarse-textured sandy soils can be derived by using soil moisture measurements; the proposed methods provided a reliable solution over the entire growing season and showed a great potential for identifying appropriate irrigation amounts and frequencies, and thus a move toward sustainable water resources management, even under traditional surface irrigation conditions.

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Evaluating the effects of tillage techniques on soil hydro-physical properties in Guinea Savanna of Nigeria

Cited by 16 publications

References 40 publications

Comparing physical quality of tilled and no-tilled soils in an almond orchard in southern Italy

Comparing physical quality of tilled and no-tilled soils in an almond orchard in southern Italy

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

Quantification of soil water balance components based on continuous soil moisture measurement and the Richards equation in an irrigated agricultural field of a desert oasis

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