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Volume 82 Issue 3, May-June 2018



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  • METHODS SUMMARY up

    • Ryan D. Stewart and Majdi R. Abou Najm
      A Brief Overview: Field Measurements of Soil Cracks
      Core Ideas
      • We review a recent Online Soil Methods contribution.
      • Three main methods for measuring soil cracks are discussed.
      • Field cracks can be measured with destructive and non-destructive methods.
      • Crack measurements important for predicting many environmental processes.
      doi:10.2136/sssaj2018.01.0044
      Soil Science Society of America Journal 2018 82:547-547
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  • SOIL PHYSICS & HYDROLOGY up

    • Ryan D. Stewart and Majdi R. Abou Najm
      A Comprehensive Model for Single Ring Infiltration I: Initial Water Content and Soil Hydraulic Properties
      Core Ideas
      • New single ring infiltration model accounts for a wide range of experimental conditions.
      • Soil capillarity as function of initial water content was explored.
      • Model closely matched HYDRUS-3D simulations for thirty infiltration scenarios.
      • Model was tested with both Brooks and Corey and van Genuchten–Mualem hydraulic parameters.
      • Brooks and Corey parameters gave more consistent predictions for cumulative infiltration.
      doi:10.2136/sssaj2017.09.0313
      Soil Science Society of America Journal 2018 82:548-557
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    • Ryan D. Stewart and Majdi R. Abou Najm
      A Comprehensive Model for Single Ring Infiltration II: Estimating Field-Saturated Hydraulic Conductivity
      Core Ideas
      • Four approaches were tested to estimate Kfs from single ring infiltration data.
      • Highest accuracy occurred when capillary length was appropriately constrained.
      • Kfs estimates improved if capillary length was overestimated vs. underestimated.
      • Assuming a universal capillary length can also be useful for determining Kfs.
      • Kfs can be accurately estimated using both early-time and steady-state data.
      doi:10.2136/sssaj2017.09.0314
      Soil Science Society of America Journal 2018 82:558-567
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      [ Supplement 1 ]
    • Debjit Roy, Xinhua Jia, Dean D. Steele and Dongqing Lin
      Development and Comparison of Soil Water Release Curves for Three Soils in the Red River Valley
      Core Ideas
      • Soil water release curve is important but difficult to measure.
      • HYPROP and WP4 are used to develop the soil water release curves for three soils.
      • HYPROP and WP4 provided a good and simple way to measure soil water release curves.
      doi:10.2136/sssaj2017.09.0324
      Soil Science Society of America Journal 2018 82:568-577
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    • Javier Reyes, Ole Wendroth, Christopher Matocha, Junfeng Zhu, Wei Ren and A.D. Karathanasis
      Reliably Mapping Clay Content Coregionalized with Electrical Conductivity
      Core Ideas
      • Surface clay content was derived through a combination of clay measurements and a proximal sensor.
      • Apparent electrical conductivity (ECa) supported reliable clay content estimation.
      • Predictions of clay coregionalized with ECa performed well, even for one soil sample per two hectares.
      doi:10.2136/sssaj2017.09.0327
      Soil Science Society of America Journal 2018 82:578-592
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    • Quirijn de Jong van Lier, Everton Alves Rodrigues Pinheiro and Leonardo Inforsato
      A One-Dimensional Physically Based Approach to Predict Soil Profile Aeration Requirements
      Core Ideas
      • A process-based theory for predicting the minimum air-filled porosity was developed.
      • The model allows analyzing sensitivity of aeration requirements to system parameters.
      • Common static air content values for entire soil profiles are shown to be flawed.
      doi:10.2136/sssaj2017.10.0369
      Soil Science Society of America Journal 2018 82:593-600
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  • SOIL PHYSICS & HYDROLOGY NOTE up

    • Michel Bechtold, Ullrich Dettmann, Lena Wöhl, Wolfgang Durner, Arndt Piayda and Bärbel Tiemeyer
      Comparing Methods for Measuring Water Retention of Peat Near Permanent Wilting Point
      Core Ideas
      • Properties of peat and mineral soils are very different.
      • Laboratory methods for hydraulic properties often tested only for mineral soils.
      • Shrinkage and hydrophobicity of peat may cause inaccuracies.
      • Pressure plate apparatus provides reliable data despite shrinkage.
      • Observed long-lasting repellency effects prohibit protocols based on previously dried samples.
      doi:10.2136/sssaj2017.10.0372
      Soil Science Society of America Journal 2018 82:601-605
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  • SOIL BIOLOGY & BIOCHEMISTRY up

    • Yadan Du, Wenquan Niu, Qian Zhang, Bingjing Cui, Xiaobo Gu, Lili Guo and Bohui Liang
      Effects of Nitrogen on Soil Microbial Abundance, Enzyme Activity, and Nitrogen Use Efficiency in Greenhouse Celery under Aerated Irrigation
      Core Ideas
      • Aerated irrigation improved soil microbial environment, increased soil fertility and nutrient uptake.
      • The rate of 200 kg N ha–1 under aerated irrigation enhanced soil microbial abundance by 1.62- to 13.69-fold.
      • The rate of 200 kg N ha–1 under aerated irrigation increased enzyme activity by 16.67 to 22.95%.
      • 200 kg N ha–1 under aerated irrigation enhanced celery yield and N use efficiency by 7.31 and 34.1%, respectively.
      doi:10.2136/sssaj2017.11.0377
      Soil Science Society of America Journal 2018 82:606-613
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    • Jin Hua Li, Feng Li, Wen Jin Li, Shan Chen, L.K. Abbott and Johannes M. H. Knops
      Nitrogen Additions Promote Decomposition of Soil Organic Carbon in a Tibetan Alpine Meadow
      Core Ideas
      • Litter addition increased C decomposition.
      • Litter properties were more important than abiotic soil properties in controlling C decomposition.
      • N addition would increase decomposition of SOC with added litter and decrease SOC accumulation by altering litter quality.
      doi:10.2136/sssaj2017.12.0417
      Soil Science Society of America Journal 2018 82:614-621
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      [ Supplement 1 ]
  • SOIL FERTILITY & PLANT NUTRITION up

    • Carlos A. C. do Nascimento, Paulo H. Pagliari, Letícia de A. Faria and Godofredo C. Vitti
      Phosphorus Mobility and Behavior in Soils Treated with Calcium, Ammonium, and Magnesium Phosphates
      Core Ideas
      • Humic acid coatings on monoammonium phosphate had no effect on P lability or mobility.
      • Struvite provided the lesser P mobility among the fertilizers tested.
      • There was greater P mobility in soils with high sand content and low initial pH.
      doi:10.2136/sssaj2017.06.0211
      Soil Science Society of America Journal 2018 82:622-631
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  • PEDOLOGY up

    • Bruno Teixeira Ribeiro, David C. Weindorf, Bruno Montoani Silva, Diego Tassinari, Larissa Carvalho Amarante, Nilton Curi and Luiz Roberto Guimarães Guilherme
      The Influence of Soil Moisture on Oxide Determination in Tropical Soils via Portable X-ray Fluorescence
      Core Ideas
      • We verified the effect of soil moisture on portable X-ray fluorescence (pXRF) results with undisturbed soil samples.
      • Heavy oxides (Fe and Ti) are much less affected by soil moisture than light oxides (Si and Al).
      • The power model described the effect of soil moisture on pXRF results for SiO2 and Al2O3 well
      • A practical correction factor for SiO2 and Al2O3 was proposed for accurate in-field measurements
      doi:10.2136/sssaj2017.11.0380
      Soil Science Society of America Journal 2018 82:632-644
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    • Jingjing Shi, Lin Yang, A-Xing Zhu, Chengzhi Qin, Peng Liang, Canying Zeng and Tao Pei
      Machine-Learning Variables at Different Scales vs. Knowledge-based Variables for Mapping Multiple Soil Properties
      Core Ideas
      • Explored the impact of variables selected by different means on mapping at a watershed scale area.
      • Identified influential topographic variables with appropriate scales for mapping soil properties.
      • Finding the appropriate scales of local attributes is helpful for mapping soil properties accurately.
      • Local attribute scale helped map accuracy vs. use of local and regional attributes at single scale.
      doi:10.2136/sssaj2017.11.0392
      Soil Science Society of America Journal 2018 82:645-656
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  • PEDOLOGY NOTE up

    • Anatja Samouëlian, Laurence Quénard, Isabelle Cousin and Sophie Cornu
      Quantity and Quality of Dispersed Fine Particles after the Low-Energy Water-Dispersible Soil Test: Impact of the Initial Soil Matrix Potential
      Core Ideas
      • Moist initial conditions allow better discrimination of particle dispersion among soils.
      • The nature of dispersed <2-μm particles varies with the initial soil matrix condition.
      • The low-energy water-dispersible clay test at two different initial conditions allows soil functioning analysis.
      doi:10.2136/sssaj2017.09.0318
      Soil Science Society of America Journal 2018 82:657-662
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      [ Supplement 1 ]
  • SOIL & WATER MANAGEMENT & CONSERVATION up

    • Hamed Majidzadeh, B. Graeme Lockaby, Robert Price and Robin Governo
      Soil Carbon and Nitrogen Dynamics beneath Impervious Surfaces
      Core Ideas
      • Carbon loss from soil beneath impervious surfaces would not exceed 1.92 Pg globally.
      • Net nitrogen mineralization rates beneath impervious surfaces were primarily related to nitrification.
      • Temporally, nitrate accumulation was evident beneath impervious surfaces.
      • Soil microbial biomass carbon was the key factor affecting soil carbon beneath the concrete slabs.
      • Soil carbon beneath homes was positively related to soil volumetric water content.
      doi:10.2136/sssaj2017.11.0381
      Soil Science Society of America Journal 2018 82:663-670
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    • Ryogo Kurokawa and Kazuo Kamura
      Adsorption of Boron by Volcanic Ash Soils Distributed in Japan
      Core Ideas
      • Boron adsorption increased from pH 5 to 8, peaked at pH 8 to 9, and decreased from pH 9 to 11.
      • Boron adsorption followed a linear adsorption isotherm between 0.4 and 88.4 mg B L–1.
      • Adsorption increased with increasing coexisting anion concentration and occurred via inner sphere complexes.
      • Boron was adsorbed only by amorphous minerals such as allophane, imogolite, and ferrihydrite.
      doi:10.2136/sssaj2017.12.0427
      Soil Science Society of America Journal 2018 82:671-677
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    • B. S. Sharratt, A. McGuire and D. Horneck
      Early-Season Wind Erosion Influenced by Soil-Incorporated Green Manure in the Pacific Northwest
      Core Ideas
      • Irrigated soils in the Pacific Northwest are highly susceptible to wind erosion.
      • Early-season wind erosion potential was assessed from soil-incorporated green manure and no green manure treatments.
      • Soil-incorporated green manure did not influence wind erosion.
      doi:10.2136/sssaj2018.01.0018
      Soil Science Society of America Journal 2018 82:678-684
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    • Alan J. Franzluebbers, Mary R. Pershing, Carl Crozier, Deanna Osmond and Michelle Schroeder-Moreno
      Soil-Test Biological Activity with the Flush of CO 2 : I. C and N Characteristics of Soils in Corn Production
      Core Ideas
      • Soil nitrogen mineralization can be predicted with the flush of CO2.
      • Soil texture does not alter the relationship between the flush of CO2 and N mineralization.
      • Large quantity of mineralizable N in surface soils is possible with conservation management.
      • The flush of CO2 is an appropriate indicator for soil-test biological activity.
      • The flush of CO2 is a rapid and reliable indicator of soil N availability.
      doi:10.2136/sssaj2017.12.0433
      Soil Science Society of America Journal 2018 82:685-695
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    • Alan J. Franzluebbers and Mary R. Pershing
      Soil-Test Biological Activity with the Flush of CO 2 : II. Greenhouse Growth Bioassay from Soils in Corn Production
      Core Ideas
      • Grass growth in the greenhouse was dependent on soil nitrogen mineralization.
      • Soil-test biological activity was a valuable indicator of nitrogen mineralization.
      • Biological activity, residual inorganic nitrogen, and total nitrogen were most important.
      doi:10.2136/sssaj2018.01.0024
      Soil Science Society of America Journal 2018 82:696-707
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    • Alan J. Franzluebbers
      Soil-Test Biological Activity with the Flush of CO 2 : III. Corn Yield Responses to Applied Nitrogen
      Core Ideas
      • Relative corn yield was associated with residual inorganic and mineralizable N.
      • Soil-test biological activity was a good surrogate for predicting N availability.
      • Economically optimum N fertilizer requirement could be adjusted with soil testing.
      doi:10.2136/sssaj2018.01.0029
      Soil Science Society of America Journal 2018 82:708-721
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  • NUTRIENT MANAGEMENT & SOIL & PLANT ANALYSIS up

    • Nuwan K. Wijewardane, Yufeng Ge, Skye Wills and Zamir Libohova
      Predicting Physical and Chemical Properties of US Soils with a Mid-Infrared Reflectance Spectral Library
      Core Ideas
      • A mid-infrared spectral library containing 20,000+ samples was reported.
      • Twelve soil physical and chemical properties were predicted with MIR spectra.
      • ANN models performed better than PLSR for most soil properties.
      • Horizon and taxonomic order as auxiliary variables improved prediction for PLSR.
      • MIR library has the potential as an alternative to laboratory-based analysis for OC and IC.
      doi:10.2136/sssaj2017.10.0361
      Soil Science Society of America Journal 2018 82:722-731
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  • ERRATUM up

    • Nahuel Ignacio Reussi Calvo, Nicolás Wyngaard, Juan Orcellet, Hernán Rene Sainz Rozas and Hernán Eduardo Echeverría
      Erratum: Predicting Field-Apparent Nitrogen Mineralization from Anaerobically Incubated Nitrogen
      doi:10.2136/sssaj2017.11.0395er
      Soil Science Society of America Journal 2018 82:732-732
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