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Journal articles on the topic 'Soil volumetric water concentration'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Santos, Aline Aparecida dos, Jorge Luiz Moretti de Souza, and Stefanie Lais Kreutz Rosa. "Alcohol concentrations for determining soil particle density using the volumetric glassware method." Acta Iguazu 9, no. 4 (2020): 88–101. http://dx.doi.org/10.48075/actaiguaz.v9i4.25653.

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The objective of this study was to evaluate the efficiency of alcohol in concentrations of 0.0, 47.6, 70 and 99 °GL, to determine the soil particle density (rp) with the Volumetric Glassware Method (VG), verifying the best time of analysis and the possibility of alternatives to 99 °GL alcohol concentration. The soil samples were collected in five experimental areas of the Fundação ABC (Arapoti, Castro, Itaberá, Ponta Grossa and Tibagi), at 0.0-0.20 m depth, stored in a plastic bag and forwarded to the Soil Physics laboratory of the Federal University of Paraná. Analyzes with alcohol concentrat

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2

Vogeler, I., B. E. Clothier, and S. R. Green. "TDR estimation of the resident concentration of electrolyte in the soil solution." Soil Research 35, no. 3 (1997): 515. http://dx.doi.org/10.1071/s96089.

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In order to examine whether the electrolyte concentration in the soil solution can be estimated by time domain reflectometry (TDR) measured bulk soil electrical conductivity, column leaching experiments were performed using undisturbed soil columns during unsaturated steady-state water flow. The leaching experiments were carried out on 2 soils with contrasting pedological structure. One was the strongly structured Ramiha silt loam, and the other the weakly structured Manawatu fine sandy loam. Transport parameters obtained from the effluent data were used to predict the transient pattern in the

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3

Lu, Xiaohui, Yantong Wei, Jianglin Ren, Haitao Zhang, and Yang Yang. "Study on Water-Heat-Solution Transport Law in Cr(VI)-Contaminated Soil during Electric Remediation." Sustainability 14, no. 13 (2022): 8136. http://dx.doi.org/10.3390/su14138136.

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In order to understand the water-thermal-solute transport pattern during the electrokinetic remediation of Cr(VI)-contaminated soil, this study selected 2.46 m3 of Cr(VI)-contaminated soil from a chemical plant plot for an indoor experiment of electrokinetic remediation, which monitored the changes of three indicators of soil volumetric water content, temperature and Cr(VI) content over time under the conditions of a voltage of 90 V and 110 V and an electrode distance of 1.5 m for 7 days. A numerical model was also developed using the finite element software COMSOL, which was evaluated and cal

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4

Lenssen, A.W. "Biofield and Fungicide Seed Treatment Influences on Soybean Productivity, Seed Quality and Weed Community." Agricultural Journal 8, no. 3 (2013): 138–43. https://doi.org/10.5281/zenodo.34721.

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Soybean production in Iowa USA is among the most productive for rainfed regions in the world. Despite generally having excellent soils, growing season temperatures and rainfall, soybean yields are decreased by weed interference and inadequate available soil water at key stages of crop development. A field study was conducted at two locations in Iowa in 2012 to determine if seed-applied fungicide or biofield treatments influenced weed community, soil volumetric water concentration and soybean yield and quality. Application of biofield treatment resulted in lower density of tall waterhemp densit

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5

Yan, Sihui, Tibin Zhang, Binbin Zhang, et al. "The higher relative concentration of K⁺ to Na⁺ in saline water improves soil hydraulic conductivity, salt-leaching efficiency and structural stability." SOIL 9, no. 1 (2023): 339–49. http://dx.doi.org/10.5194/soil-9-339-2023.

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Abstract. Soil salinity and sodicity caused by saline water irrigation are widely observed globally. Clay dispersion and swelling are influenced by sodium (Na+) concentration and electrical conductivity (EC) of soil solution. Specifically, soil potassium (K+) also significantly affects soil structural stability, but for which concern was rarely addressed in previous studies or irrigation practices. A soil column experiment was carried out to examine the effects of saline water with different relative concentrations of K+ to Na+ (K+ / Na+), including K+ / Na+ of 0:1 (K0Na1), 1:1 (K1Na1) and 1:0

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6

Chen, Hai Bo, Lin Mao Ye, and Li Kui Shi. "An Analysis of the Effects on Calibration Parameters of FDR for Moisture Sensor Caused by Different Kinds of Soils." Applied Mechanics and Materials 401-403 (September 2013): 968–73. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.968.

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With the method of artificial soil columns, several kinds of soil, such as, loam, clay, and sandy soil were used for FDR (frequency domain reflectometry) moisture sensor calibration experiment. Then, these data showed that the frequency of soil moisture sensor is monotone decreasing with the increase of soil volumetric water content, so the correlation is obvious. Different kinds of soil affected moisture sensor parameter remarkably. A better result would be obtained in classification calibration than that in concentration calibration. This experimental result had a great meaning for fine cali

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7

Tong, J. X., J. Z. Yang, and B. X. Hu. "Parameter identification and analysis of soluble chemical transfer from soil to surface runoff." Hydrology and Earth System Sciences Discussions 9, no. 3 (2012): 3901–31. http://dx.doi.org/10.5194/hessd-9-3901-2012.

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Abstract. A two-layer mathematical model is used to predict the chemical transfer from the soil into the surface runoff with ponding water. There are two incomplete infiltration-related parameter γ and runoff-related parameter α in the analytical solution to the model, which were assumed to be constant in previous studies (Tong et al., 2010). In this study, experimental data are used to identify the variable γ and α based on the analytical solution. The soil depth of the mixing zone is kept to be constant in different experiments, and the values of γ and α before the surface runoff occurs are

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8

Toková, Lucia, Dušan Igaz, and Elena Aydin. "Measurement of Volumetric Water Content by Gravimetric and Time Domain Reflectometry Methods at Field Experiment with Biochar and N Fertilizer." Acta Horticulturae et Regiotecturae 22, no. 2 (2019): 61–64. http://dx.doi.org/10.2478/ahr-2019-0011.

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Abstract There are many methods used for soil water content measurement which we can divide into direct gravimetric methods from using soil samples or indirect methods that are based on the measurement of another soil property which is dependent on soil moisture. The paper presents the findings of volumetric water content measurements with gravimetric and time domain reflectometry (TDR) methods. We focused on four variants in the field experiment in Dolná Malanta (Slovakia): control variant (B0+N0), variant with biochar at dose 20 t.ha−1 without N fertilizer (B20+N0), variant with biochar 20 t

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9

Lim, Wansang, Kenneth W. Mudge, and Jin Wook Lee. "Effect of Water Stress on Ginsenoside Production and Growth of American Ginseng." HortTechnology 16, no. 3 (2006): 517–22. http://dx.doi.org/10.21273/horttech.16.3.0517.

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We determined the effect of moderate water stress on the growth of american ginseng (Panax quinquefolium), and on concentrations of six major ginsenosides (Rg1, Re, Rb1, Rc, Rb2, and Rd). Two-year-old “rootlets” (dormant rhizome and storage root) were cultivated in pots, in a cool greenhouse (18.3 ± 2 °C). Pots were watered either every 5 days (control) or every 10 days (stress), repeatedly for 8 days. Soil volumetric water content was measured during the last 10 days of the experiment for both treatments. Leaf water potential, measured on the last day of the experiment, was -0.43 MPa for the

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10

Lennartz, B., S. K. Kamra, and S. Meyer-Windel. "Field scale variability of solute transport parameters and related soil properties." Hydrology and Earth System Sciences 1, no. 4 (1997): 801–11. http://dx.doi.org/10.5194/hess-1-801-1997.

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Abstract. The spatial variability of transport parameters has to be taken into account for a reliable assessment of solute behaviour in natural field soils. Two field sites were studied by collecting 24 and 36 small undisturbed soil columns at an uniform grid of 15 m spacing. Displacement experiments were conducted in these columns with bromide traced water under unsaturated steady state transport conditions. Measured breakthrough curves (BTCs) were evaluated with the simple convective-dispersive equation (CDE). The solute mobility index (MI) calculated as the ratio of measured to fitted pore

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11

Kargas, George, Paraskevi Londra, and Petros Kerkides. "Investigation of the Flux–Concentration Relation for Horizontal Flow in Soils." Water 11, no. 12 (2019): 2442. http://dx.doi.org/10.3390/w11122442.

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The objective of the present work is to investigate the flux–concentration (F(Θ)) relation, where Θ is the normalized soil volumetric water content for the case of one-dimensional horizontal flow, subject to constant concentration conditions. More specifically, the possibility of describing F(Θ) by an equation of the form F(Θ) = 1 − (1 − Θ)p+1 is examined. Parameter p is estimated from curve-fitting of the experimentally obtained λ(Θ) data to an analytic expression of the form (1 − Θ)p where λ is the well-known Boltzmann transformation λ = xt−0.5 (x = distance, t = time). The results show that

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12

Foster, N. W., I. K. Morrison, Xiwei Yin, and P. A. Arp. "Impact of soil water deficits in a mature sugar maple forest: stand biogeochemistry." Canadian Journal of Forest Research 22, no. 11 (1992): 1753–60. http://dx.doi.org/10.1139/x92-229.

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Computer simulations of moisture relationships in an uneven-aged, tolerant hardwood forest at the Turkey Lakes Watershed suggest that soil water deficits during 1982–1983 and 1988–1989 were among the most severe of the past 40 years. Examination of radial growth indices for sugar maple (Acersaccharum Marsh.) trees suggested that reductions in growth coincided with low volumetric soil water contents and with low NO3− concentrations in soil solution. The lowest mean monthly NO3− concentrations in soil percolate were observed during severe summer droughts. Nitrate concentrations were negatively c

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13

Vogeler, I., S. Green, A. Nadler, and C. Duwig. "Measuring transient solute transport through the vadoze zone using time domain reflectometry." Soil Research 39, no. 6 (2001): 1359. http://dx.doi.org/10.1071/sr00100.

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Time domain reflectometry (TDR) was used to monitor the transport of conservative tracers in the field under transient water flow in a controlled experiment under a kiwifruit vine. A mixed pulse of chloride and bromide was applied to the soil surface of a 16 m2 plot that had been isolated from the surrounding orchard soil. The movement of this solute pulse was monitored by TDR. A total of 63 TDR probes were installed into the plot for daily measurements of both the volumetric water content (θ) and the bulk soil electrical conductivity (σa). These TDR-measured σa were converted into pore water

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14

Jiang, Shuang, Graeme D. Buchan, Mike J. Noonan, Neil Smith, Liping Pang, and Murray Close. "Bacterial leaching from dairy shed effluent applied to a fine sandy loam under irrigated pasture." Soil Research 46, no. 7 (2008): 552. http://dx.doi.org/10.1071/sr07216.

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This experiment investigated bacterial transport from land-applied dairy shed effluent (DSE), via field lysimeter studies, using 2 contrasting irrigation methods. Transient water flow and bacterial transport were studied, and the factors controlling faecal coliform (FC) transport are discussed. Two trials (Trial 1, summer; Trial 2, autumn) were carried out, using 6 undisturbed soil monolith lysimeters, 500 mm diameter by 700 mm deep, with a free-draining, Templeton fine sandy loam. DSE with inert chemical tracers was applied at the start of both trials using the same method, followed with repe

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15

Carter, M. R. "Long-term influence of compost on available water capacity of a fine sandy loam in a potato rotation." Canadian Journal of Soil Science 87, no. 5 (2007): 535–39. http://dx.doi.org/10.4141/cjss06042.

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An improved soil physical structure, associated with organic amendments in crop rotations, can be viewed as an emergent property. A study was conducted to evaluate the effect of applied compost on soil water retention and available water capacity, and other associative soil properties in a long-term 3-yr potato rotation established on a Charlottetown fine sandy loam (Orthic Humo-Ferric Podzol) in Prince Edward Island. Soil samples (0–10 cm) were obtained from two crop phases (barley and potato) during the fourth cycle of the rotation (after four compost applications) in the 12th year of the ex

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16

Gonzalez-Dugo, Victoria, Jean-Louis Durand, François Gastal, and Catherine Picon-Cochard. "Short-term response of the nitrogen nutrition status of tall fescue and Italian ryegrass swards under water deficit." Australian Journal of Agricultural Research 56, no. 11 (2005): 1269. http://dx.doi.org/10.1071/ar05064.

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Grasslands are rarely irrigated, thus water deficits often induce a reduction of the nitrogen nutrition index (NNI) during summer. This is measured using the ratio between the actual N concentration and the minimum N concentration required to achieve the maximum growth rate. NNI is derived from the standing biomass by a simple relationship. This paper details the results of a field experiment, combining 2 levels of irrigation with 2 levels of nitrogen fertilisation during the summer, on 2 commonly cultivated grass species in pure swards (tall fescue, Festuca arundinacea L., and Italian ryegras

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17

Bardanis, Michail, Theodoros Marinis, Eleni-Eva Toumbakari, and Georgios Dounias. "Reproduction and long-term monitoring of drying of mudbricks and small mudbrick walls for the preservation of the ancient mudbrick wall of Eleusis." E3S Web of Conferences 382 (2023): 17002. http://dx.doi.org/10.1051/e3sconf/202338217002.

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The mudbrick wall remains preserved to date in the site of Eleusis are some of the largest preserved in Greece. Following an extensive investigation of the properties of existing mudbricks, material of similar properties from the archaeological site of Eleusis was used to reproduce mudbricks of similardensity with the ancient ones after drying with various concentrations of dry grass also from the archaeological site. Actual mudbricks were reproduced and brought to a final equilibrium condition under climatic conditions practically similar to those in Eleusis. Others were used to trim samples

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18

Proffitt, APB, and CW Rose. "Soil erosion processes. I. The relative importance of rainfall detachment and dunoff entrainment." Soil Research 29, no. 5 (1991): 671. http://dx.doi.org/10.1071/sr9910671.

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Experiments carried out in a simulated-rainfall tilting-flume facility are reported in which sediment concentrations (c) in runoff water resulting from overland flow only, or from a combination of rainfall and overland flow, were measured under controlled conditions using a series of slopes (0.1, 05, 1, 3 and 5%). The mixture of rainfall (of rate 100 mm h-1) and runon of water at the top of the flume were arranged to provide a constant volumetric flux (1.0x10-3 m3 m-l s-1) at exit from the 5.8 m long flume. Two contrasting soil types were studied: a cracking clay (black earth or vertisol), and

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19

Saha, Abhisekh, Sreedeep Sekharan, and Uttam Manna. "Effect of Water Absorbing Polymer Amendment on Performance of Capacitance Soil Moisture Sensor." Advances in Civil Engineering Materials 13, no. 1 (2024): 116–33. http://dx.doi.org/10.1520/acem20230041.

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Abstract Water absorbing polymer (WAP) is emerging as soil amendment material for various soil infrastructures, such as urban green infrastructure, green roofs, landfill covers, and climate-resilient agriculture, to promote vegetation growth and thereby increase the sustainability of the projects. WAP amended soils experience alternating periods of drying and wetting because of their exposure to different climate conditions. Precise determination of volumetric water content (VWC) in vadose zone is required to establish the soil-water retention curve (SWRC) in WAP amended soils. This study aims

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20

Cassidy, D. P., and R. L. Irvine. "Biological treatment of a soil contaminated with diesel fuel using periodically operated slurry and solid phase reactors." Water Science and Technology 35, no. 1 (1997): 185–92. http://dx.doi.org/10.2166/wst.1997.0043.

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A silty clay loam contaminated with diesel fuel was treated in the laboratory using periodically operated slurry and solid phase bioreactors. Soil Slurry-Sequencing Batch Reactors (SS-SBRs) were operated with a 40% solids concentrations (w/v) to determine the effect of hydraulic residence time and volumetric replacement strategy on performance. Solid Phase-Sequencing Batch Reactors (SP-SBRs) were operated with the same silty clay loam artificially contaminated with diesel fuel. Different periodic aeration strategies were investigated in the SP-SBRs in an attempt to minimize volatile losses wit

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21

Guo, Chuying, Leiming Zhang, Shenggong Li, and Yuxin Chen. "Freeze–Thaw Events Change Soil Greenhouse Gas Fluxes Through Modifying Soil Carbon and Nitrogen Cycling Processes in a Temperate Forest in Northeastern China." Forests 15, no. 12 (2024): 2082. http://dx.doi.org/10.3390/f15122082.

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Freeze–thaw events are predicted to be more frequent in temperate forest ecosystems. Whether and how freeze–thaw cycles change soil greenhouse gas fluxes remains elusive. Here, we compared the fluxes of three soil greenhouse gases (CO2, CH4, and N2O) across the spring freeze–thaw (SFT) period, the growing season (GS), and the annual (ALL) period in a temperate broad-leaved Korean pine mixed forest in the Changbai Mountains in Jilin Province, Northeastern China from 2019 to 2020. To assess the mechanisms driving the temporal variation of soil fluxes, we measured eleven soil physicochemical fact

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22

Viaene, J., V. Nelissen, B. Vandecasteele, K. Willekens, S. De Neve, and B. Reubens. "Field storage conditions for cattle manure to limit nitrogen losses and optimise fertiliser value." Animal Production Science 57, no. 10 (2017): 2148. http://dx.doi.org/10.1071/an16170.

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Storage and application of cattle farmyard manure (CFM) can cause considerable environmental problems through nutrient losses to soil, water and air, if not properly handled. We investigated different storage conditions of CFM at field scale to reduce nitrogen (N) losses to the soil, meanwhile optimising the agronomical quality of the CFM. The treatments differed in terms of storage method (stockpiling, extensive composting or co-composting with bulking agents) and coverage (no cover, plastic or geotextile cover). Over the different treatments, the ammonium-N concentrations under the piles in

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23

Nojarov, Peter, Petar Stefanov, and Karel Turek. "Influence of some climatic elements on radon concentration in Saeva Dupka Cave, Bulgaria." International Journal of Speleology 49, no. 3 (2020): 235–48. http://dx.doi.org/10.5038/1827-806x.49.3.2349.

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This study reveals the influence of some climatic elements on radon concentration in Saeva Dupka Cave, Bulgaria. The research is based mainly on statistical methods. Radon concentration in the cave is determined by two main mechanisms. The first one is through penetration of radon from soil and rocks around the cave (present all year round, but has leading role during the warm half of the year). The second one is through thermodynamic exchange of air between inside of the cave and outside atmosphere (cold half of the year). Climatic factors that affect radon concentration in the cave are tempe

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24

Bellosta-Diest, Amelia, Miguel Á. Campo-Bescós, Jesús Zapatería-Miranda, Javier Casalí, and Luis M. Arregui. "Evaluation of Nitrate Soil Probes for a More Sustainable Agriculture." Sensors 22, no. 23 (2022): 9288. http://dx.doi.org/10.3390/s22239288.

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Synthetic nitrogen (N) fertilizers and their increased production and utilization have played a great role in increasing crop yield and in meeting the food demands resulting from population growth. Nitrate (NO3−) is the common form of nitrogen absorbed by plants. It has high water solubility and low retention by soil particles, making it prone to leaching and mobilization by surface water, which can seriously contaminate biological environments and affect human health. Few methods exist to measure nitrate in the soil. The development of ion selective sensors provides knowledge about the dynami

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25

Gran, M., J. Carrera, S. Olivella, and M. W. Saaltink. "Modeling evaporation processes in a saline soil from saturation to oven dry conditions." Hydrology and Earth System Sciences Discussions 8, no. 1 (2011): 529–54. http://dx.doi.org/10.5194/hessd-8-529-2011.

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Abstract. Thermal, suction and osmotic gradients interact during evaporation from a salty soil. Vapor fluxes become the main water flow mechanism under very dry conditions. A coupled nonisothermal multiphase flow and a reactive transport model of a salty sand soil was developed to study such an intricate system. The model was calibrated with data from an evaporation experiment (volumetric water content, temperature and concentration). The retention curve and relative permeability functions were modified to simulate oven dry conditions. Experimental observations were satisfactorily reproduced,

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26

Gulomova, Gulnora, and Musurmon Barotov. "To the adsorbent obtained on the basis of local Angren coal analysis of adsorption energy properties of benzene vapors." E3S Web of Conferences 461 (2023): 01071. http://dx.doi.org/10.1051/e3sconf/202346101071.

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This article provides information on ensuring safety at coal mines by analyzing existing coal mining facilities. Information on the Angren coal mine is also given. It is shown that there are no accurate methods for determining the location of fires in order to increase the efficiency of spontaneous combustion prevention by supplying liquid compositions such as water and clay pulp flowing down the formation soil. Measures have been proposed to suppress spontaneous combustion centers, nitrogen is being increasingly used, the supply of which ensures volumetric processing of the collapsed mass and

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Gulomova, Gulnora, Urxiya Turabekova, Dilrabo Nizamova, and Rayhon Mudarisova. "Problems of ensuring security in open – pipe coal mines in the republic of Uzbekistan." E3S Web of Conferences 461 (2023): 01067. http://dx.doi.org/10.1051/e3sconf/202346101067.

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This article provides information on ensuring safety at coal mines by analyzing existing coal mining facilities. Information on the Angren coal mine is also given. It is shown that there are no accurate methods for determining the location of fires in order to increase the efficiency of spontaneous combustion prevention by supplying liquid compositions such as water and clay pulp flowing down the formation soil. Measures have been proposed to suppress spontaneous combustion centers, nitrogen is being increasingly used, the supply of which ensures volumetric processing of the collapsed mass and

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28

Saito, Tadaomi, Takahiro Oishi, Mitsuhiro Inoue, et al. "Low-Error Soil Moisture Sensor Employing Spatial Frequency Domain Transmissometry." Sensors 22, no. 22 (2022): 8658. http://dx.doi.org/10.3390/s22228658.

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A new type of soil moisture sensor using spatial frequency domain transmissometry (SFDT) was evaluated. This sensor transmits and receives ultrawideband (1 to 6 GHz) radio waves between two separated antennas and measures the propagation delay time in the soil related to the dielectric constant. This method is expected to be less affected by air gaps between the probes and the soil, as well as being less affected by soil electrical conductivity (EC), than typical commercial sensors. The relationship between output and volumetric water content (𝜃), and the effects of air gaps and EC were evalua

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29

Eid, Ebrahem M., Amr E. Keshta, Sulaiman A. Alrumman, et al. "Modeling Soil Organic Carbon at Coastal Sabkhas with Different Vegetation Covers at the Red Sea Coast of Saudi Arabia." Journal of Marine Science and Engineering 11, no. 2 (2023): 295. http://dx.doi.org/10.3390/jmse11020295.

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Healthy coastal sabkhas (sabkha is an Arabic term for a salt flat) offer plenty of ecosystem services including climate change mitigation. However, fewer research studies were conducted at coastal sabkhas compared to other coastal marshes. This study was conducted in a total of ten coastal sabkha sites with different vegetation covers along the southern Red Sea coast of Saudi Arabia. The main objectives were to model and predict the distribution of volumetric soil organic carbon (SOC) density (kg C/m3) and cumulative SOC stocks (kg C/m2) using three different mathematic functions (allometric,

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Nassor, Suleiman, Siti Jahara Matlan, Nazaruddin Abd Taha, and Muhammad Mukhlisin. "Analysis of the Hydraulic Properties of Unsaturated Soils from the Garinono Formation in Sandakan, Sabah." Journal of Advanced Research in Applied Sciences and Engineering Technology 62, no. 2 (2024): 164–83. https://doi.org/10.37934/araset.62.2.164183.

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The Garinono Formation in the Sandakan area is prone to geomorphological hazards such as landslides and slope instability due to its complex geological composition. Despite their importance for understanding the region's soil behaviour, the unsaturated hydraulic properties of the Garinono Formation remain largely unstudied. This research addresses this gap by investigating these properties, which are crucial for regulating water flow, nutrient transport and ensuring geotechnical stability. Ten silt-clay samples were analysed for bulk density and Soil-Water Characteristic Curves (SWCC) using a

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Gran, M., J. Carrera, S. Olivella, and M. W. Saaltink. "Modeling evaporation processes in a saline soil from saturation to oven dry conditions." Hydrology and Earth System Sciences 15, no. 7 (2011): 2077–89. http://dx.doi.org/10.5194/hess-15-2077-2011.

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Abstract. Thermal, suction and osmotic gradients interact during evaporation from a salty soil. Vapor fluxes become the main water flow mechanism under very dry conditions. A coupled nonisothermal multiphase flow and reactive transport model was developed to study mass and energy transfer mechanisms during an evaporation experiment from a sand column. Very dry and hot conditions, including the formation of a salt crust, necessitate the modification of the retention curve to represent oven dry conditions. Experimental observations (volumetric water content, temperature and concentration profile

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32

Walker, J. T., M. R. Jones, J. O. Bash, et al. "Processes of ammonia air-surface exchange in a fertilized <i>Zea mays</i> canopy." Biogeosciences Discussions 9, no. 6 (2012): 7893–941. http://dx.doi.org/10.5194/bgd-9-7893-2012.

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Abstract. Recent incorporation of coupled soil biogeochemical and bi-directional NH3 air-surface exchange algorithms into regional air quality models holds promise for further reducing uncertainty in estimates of NH3 emissions from fertilized soils. While this represents a significant advancement over previous approaches, the evaluation and improvement of such modeling systems for fertilized crops requires process level field measurements over extended periods of time that capture the range of soil, vegetation, and atmospheric conditions that drive short term (i.e., post fertilization) and tot

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Walker, J. T., M. R. Jones, J. O. Bash, et al. "Processes of ammonia air–surface exchange in a fertilized <i>Zea mays</i> canopy." Biogeosciences 10, no. 2 (2013): 981–98. http://dx.doi.org/10.5194/bg-10-981-2013.

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Abstract. Recent incorporation of coupled soil biogeochemical and bi-directional NH3 air–surface exchange algorithms into regional air quality models holds promise for further reducing uncertainty in estimates of NH3 emissions from fertilized soils. While this represents a significant advancement over previous approaches, the evaluation and improvement of such modeling systems for fertilized crops requires process-level field measurements over extended periods of time that capture the range of soil, vegetation, and atmospheric conditions that drive short-term (i.e., post-fertilization) and tot

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34

Ganina, A. M., M. M. Bakhtin, E. T. Kashkinbaev, P. K. Kazymbet, and D. S. Ibrayeva. "Assessment of the "zero" radiation background of the territories of the settlements of the Turkestan region, located near the site for the construction of a nuclear power plant in the Republic of Uzbekistan." BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series 141, no. 4 (2022): 54–67. http://dx.doi.org/10.32523/2616-7034-2022-141-4-54-67.

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The construction of a nuclear power plant in the Republic of Uzbekistan actualizes measures for the radiation safety of the population and territories of Kazakhstan. The aim of the study was to assess the radiation situation in the settlements of the Turkestan region located near the impact zone of the nuclear power plant. The investigation includes measurements of ambient equivalent dose rates of gamma radiation, equivalent to the equilibrium volumetric activity of radon and thoron in residential buildings, establishing the total alpha and beta activities, and measuring the specific activity

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de Beeck, Maarten Op, Bert Gielen, Lutz Merbold, et al. "Soil-meteorological measurements at ICOS monitoring stations in terrestrial ecosystems." International Agrophysics 32, no. 4 (2018): 619–31. http://dx.doi.org/10.1515/intag-2017-0041.

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Abstract The Integrated Carbon Observation System is a pan-European research infrastructure providing standardized, long-term observations of greenhouse gas concentrations and earth-atmosphere greenhouse gas interactions. The terrestrial component of Integrated Carbon Observation System comprises a network of monitoring stations in terrestrial ecosystems where the principal activity is the measurement of ecosystem-atmosphere fluxes of greenhouse gases and energy by means of the eddy covariance technique. At each station a large set of ancillary variables needed for the interpretation of observ

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Wendel, S., T. Moore, J. Bubier, and C. Blodau. "Experimental nitrogen, phosphorus, and potassium deposition decreases summer soil temperatures, water contents, and soil CO<sub>2</sub> concentrations in a northern bog." Biogeosciences Discussions 7, no. 4 (2010): 6589–616. http://dx.doi.org/10.5194/bgd-7-6589-2010.

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Abstract. Ombrotrophic peatlands depend on airborne nitrogen (N), whose deposition has increased in the past and lead to disappearance of mosses and increased shrub biomass in fertilization experiments. The response of soil water content, temperature, and carbon gas concentrations to increased nutrient loading is poorly known and we thus determined these data at the long-term N fertilization site Mer Bleue bog, Ontario, during a two month period in summer. Soil temperatures decreased with NPK addition in shallow peat soil primarily during the daytime (t-test, p<0.05) owing to increased shad

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Al-Shami, Yahya Ajib Oudah, and Mahdi Ibrahim Al-Timimi. "The effect of using subsurface water retention technology on the available content of soil nutrients under subsurface drip irrigation system." Misan Journal of Agricultural and Environmental Sciences 1, no. 1 (2025): 36–46. https://doi.org/10.64333/mjae.25.1.5.

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To evaluate the effect of using subsurface water retention technology (SWRT) in rationing added irrigation water and in the growth and yield of Zea mays L., Field experiments were conducted under the subsurface drip irrigation system in two locations: one in the Palm Tissue Research Station affiliated to the Ministry of Agriculture in Najaf Governorate. The second location of the experiment was conducted in the research fields of the College of Agriculture in Al-Jadriya, affiliated to the University of Baghdad, for two seasons, spring and autumn of 2016. The study included four treatments: SWR

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Calcan, Suzana Ioana, Oana Cristina Pârvulescu, Violeta Alexandra Ion, et al. "Effects of Biochar on Soil Properties and Tomato Growth." Agronomy 12, no. 8 (2022): 1824. http://dx.doi.org/10.3390/agronomy12081824.

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The paper aimed at evaluating the effects of biochar (BC) produced by slow pyrolysis of vine pruning residue on soil physicochemical properties and tomato plant growth. A greenhouse experiment was conducted for 66 days, applying different treatments for 3 soil types, i.e., foliar fertilizer, BC (at a volumetric ratio between BC and soil of 20/80), BC + foliar fertilizer, and no treatments. Strongly alkaline BC (pH = 9.89 ± 0.01) had a significant beneficial effect on the growth performance of tomato plants sown in a strongly acidic soil (pH = 5.40 ± 0.02). The mean values of height, number of

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Huang, Shihao, Lei Zhao, Tingge Zhang, et al. "Root Zone Water Management Effects on Soil Hydrothermal Properties and Sweet Potato Yield." Plants 13, no. 11 (2024): 1561. http://dx.doi.org/10.3390/plants13111561.

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Sufficient soil moisture is required to ensure the successful transplantation of sweet potato seedlings. Thus, reasonable water management is essential for achieving high quality and yield in sweet potato production. We conducted field experiments in northern China, planted on 18 May and harvested on 18 October 2021, at the Nancun Experimental Base of Qingdao Agricultural University. Three water management treatments were tested for sweet potato seedlings after transplanting: hole irrigation (W1), optimized drip irrigation (W2), and traditional drip irrigation (W3). The variation characteristi

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Wendel, S., T. Moore, J. Bubier, and C. Blodau. "Experimental nitrogen, phosphorus, and potassium deposition decreases summer soil temperatures, water contents, and soil CO<sub>2</sub> concentrations in a northern bog." Biogeosciences 8, no. 3 (2011): 585–95. http://dx.doi.org/10.5194/bg-8-585-2011.

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Abstract. Ombrotrophic peatlands depend on airborne nitrogen (N), whose deposition has increased in the past and lead to disappearance of mosses and increased shrub biomass in fertilization experiments. The response of soil water content, temperature, and carbon gas concentrations to increased nutrient loading is poorly known and we thus determined these data at the long-term N fertilization site Mer Bleue bog, Ontario, during a two month period in summer. Soil temperatures decreased with NPK addition in shallow peat soil primarily during the daytime (t-test, p < 0.05) owing to increased sh

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Itoh, Masayuki, Yoshiko Kosugi, Satoru Takanashi, et al. "Effects of soil water status on the spatial variation of carbon dioxide, methane and nitrous oxide fluxes in tropical rain-forest soils in Peninsular Malaysia." Journal of Tropical Ecology 28, no. 6 (2012): 557–70. http://dx.doi.org/10.1017/s0266467412000569.

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Abstract:To assess the effects of soil water status on the spatial variation in soil carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) fluxes, we examined these gas fluxes and environmental factors in a tropical rain forest in Peninsular Malaysia. Measurements of soil CO2, CH4 and N2O fluxes were taken ten, nine, and seven times, respectively over 30 mo at 15 or 39 sampling point within 2-ha plot. Mean (± SE) value of spatially averaged CO2 flux was 4.70 ± 0.19 μmol CO2 m−2 s−1 and observed spatial variation in CO2 flux was negatively related to the volumetric soil water content (VSW

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Strong, D. T., P. W. G. Sale, and K. R. Helyar. "The influence of the soil matrix on nitrogen mineralisation and nitrification V. Microporosity and manganese." Soil Research 37, no. 2 (1999): 345. http://dx.doi.org/10.1071/s98045.

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Small soil cubes of dimensions 12 by 12 by 12 mm were collected from the surface of a red earth. Treatments were addition of clover substrate or urea, drying and rewetting, or no amendment, after which soils were incubated at either –10 or –30 kPa. Each soil cube was analysed for NO-3 -N, NH+4 -N, total soil N (%N), volumetric water content (θv), microporosity (volume of pores <0·6 µm), and Mn 2+ concentration. Multiple regression analysis was used to determine if microporosity and Mn 2+ contributed uniquely to linear models in which %N and qv were also used to predict N mineralisation and

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Huber, B., J. Luster, S. M. Bernasconi, J. Shrestha, and E. Graf Pannatier. "Nitrate leaching from short-hydroperiod floodplain soils." Biogeosciences Discussions 9, no. 5 (2012): 5659–94. http://dx.doi.org/10.5194/bgd-9-5659-2012.

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Abstract. Numerous studies have shown the importance of riparian zones to reduce nitrate (NO3–) contamination coming from adjacent agricultural land. Much less is known about nitrogen (N) transformations and nitrate fluxes in riparian soils with short hydroperiods (1–3 days of inundation) and there is no study that could show whether these soils are a N sink or source. Within a restored section of the Thur River in NE Switzerland, we measured nitrate concentrations in soil solutions as an indicator of the net nitrate production. Samples were collected along a quasi-successional gradient from f

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Banaseka, Frank Kataka, Hervé Franklin, Ferdinand A. Katsriku, Jamal-Deen Abdulai, Akon Ekpezu, and Isaac Wiafe. "Soil Medium Electromagnetic Scattering Model for the Study of Wireless Underground Sensor Networks." Wireless Communications and Mobile Computing 2021 (January 4, 2021): 1–11. http://dx.doi.org/10.1155/2021/8842508.

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In recent years, there has been keen interest in the area of Internet of Things connected underground, and with this is the need to fully understand and characterize their operating environment. In this paper, a model, based on the Peplinski principle, for the propagation of waves in soils that takes into account losses attributable to the presence of local inhomogeneity is proposed. In the work, it is assumed that the inhomogeneities are obstacles such as stones or pebbles, of moderate size, all identical and randomly distributed in space. A new wave number is obtained through a combination o

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PACHECO, FÁBIO PALCZEWSKI, LÚCIA HELENA PEREIRA NÓBREGA, MICHELLE TONINI, ARIANE SPIASSI, DANIELLE MEDINA ROSA, and CLÁUDIA TATIANA DE ARAÚJO DA CRUZ-SILVA. "PHYSICAL ATTRIBUTES OF SOIL AFTER SWINE WASTEWATER APPLICATION AS COVER FERTILIZER ON MAIZE CROP AND BLACK OATS SEQUENCE." Revista Caatinga 30, no. 4 (2017): 955–62. http://dx.doi.org/10.1590/1983-21252017v30n416rc.

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ABSTRACT The rate of swine wastewater application (SW) in agricultural production could result in the replacement of chemical fertilizers. However, SW destroys soil physical properties by decreasing pore bulk, which negatively affects both crop yield and development. In this context, this study aimed at monitoring the influence of swine wastewater as a cover fertilizer in maize and black oats in sequence on soil physical properties. Five application rates (0, 100, 200, 300 and 537 m3ha - 1 equivalent to 0, 11.2, 22.3, 33.5 and 60 kg ha-1 N, respectively, based on the average nitrogen concentra

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Saidy, A. R., B. J. Priatmadi, and M. Septiana. "Soil characteristics controlling nitrous oxide emissions of tropical peatlands." IOP Conference Series: Earth and Environmental Science 1162, no. 1 (2023): 012011. http://dx.doi.org/10.1088/1755-1315/1162/1/012011.

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Abstract Emission of nitrous oxide (N2O) from peatlands contributes very significantly to the world global warming, although the factors controlling N2O emissions from peatlands are not yet clear. This study aimed to determine peat characteristics controlling N2O emissions in peatlands. N2O emissions and several soil characteristics (pH, electrical conductivity, height of water table, water-filled pore space, decomposition degree of peats, bulk density, organic carbon, total nitrogen, and concentrations of ammonium and nitrate) were observed in peatlands with different crops and land-uses: let

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Okom, A. E. A., R. E. White, and L. K. Heng. "Field measured mobile water fraction for soils of contrasting texture." Soil Research 38, no. 6 (2000): 1131. http://dx.doi.org/10.1071/sr99071.

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For the purpose of modeling solute transport, soil water has often been simply divided into an essentially mobile fraction, q m , which is active in solute transport, and an apparently immobile fraction, q im . Distinction between q m and q im was sought using the disc permeameter technique. This study examines unsaturated estimates of mobile water content at suction heads, h, of 20, 40, 80, and 120 mm for several soils ranging in texture from sand to clay. Following infiltration of 35 mm depth of 0.01 M KBr into initially dry soils, soil samples were collected from below the base of the disc

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Hsu, S. M., L. B. Chiou, G. F. Lin, C. H. Chao, H. Y. Wen, and C. Y. Ku. "Applications of simulation technique on debris-flow hazard zone delineation: a case study in Hualien County, Taiwan." Natural Hazards and Earth System Sciences 10, no. 3 (2010): 535–45. http://dx.doi.org/10.5194/nhess-10-535-2010.

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Abstract. Debris flows pose severe hazards to communities in mountainous areas, often resulting in the loss of life and property. Helping debris-flow-prone communities delineate potential hazard zones provides local authorities with useful information for developing emergency plans and disaster management policies. In 2003, the Soil and Water Conservation Bureau of Taiwan proposed an empirical model to delineate hazard zones for all creeks (1420 in total) with potential of debris flows and utilized the model to help establish a hazard prevention system. However, the model does not fully consid

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Li, Yali, Hongjuan Zhang, Mengzhu Liu, and Hongwei Pei. "How to Minimize the Nitrogen Pollution Risk of Applying Reclaimed Sewage for Urban Turfgrass Irrigation." Water 16, no. 3 (2024): 460. http://dx.doi.org/10.3390/w16030460.

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Reclamation of treated sewage is an important way to alleviate urban water scarcity and optimize ecological layout, especially in irrigating urban turfgrass. Nevertheless, the irrational use of reclaimed sewage could result in risk of excessive nitrogen (N) pollution, which requires a scientific understanding and assessment. This study examined the water-N transport process of the turfgrass system with a HYDRUS-2D model that was accurately calibrated and validated using a set of field experimental data in North China. By integrating 15 scenarios with different irrigation levels and N applicati

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Olatuyi, S. O., and L. A. Leskiw. "Evaluation of soil reclamation techniques at the Key Lake uranium mine." Canadian Journal of Soil Science 95, no. 2 (2015): 153–76. http://dx.doi.org/10.4141/cjss-2014-084.

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Olatuyi, S. O. and Leskiw, L. A. 2015. Evaluation of soil reclamation techniques at the Key Lake uranium mine. Can. J. Soil Sci. 95: 153–176. Adequate soil nutrients and water supply are critical to vegetation establishment and creation of sustainable ecosystems in post-disturbed mining sites. This study investigated effects of various amendments and capping techniques on soil quality and moisture distribution on a reclaimed waste rock pile at the Key Lake uranium mine in northern Saskatchewan, Canada. Soil profiles were reconstructed in 2010 using locally available sandy glacial materials to

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