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The effect of soil moisture on mineral nitrogen, soil electrical conductivity, and pH

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Abstract

Inorganic nitrogen in the soil is the source of N for non-legume plants. Rapid methods for monitoring changes in inorganic N concentrations would be helpful for N nutrient management. The effect of varying soil moisture content on soil mineral nitrogen, electrical conductivity (EC), and pH were studied in a laboratory experiment. Soil NO3-N increased as soil water-filled pore space (WFPS) increased from 0 to 80 cm3 cm−3. At soil moisture levels greater than 80 cm3 cm−3, NO3-N concentration declined rapidly and NH4-N concentration increased, likely due to anaerobic conditions existing at higher WFPS levels. Soil pH did not change as soil moisture increased from 100 g kg−1 to 400 g kg−1 and increased from 6.2 to 6.6 at higher levels of soil moisture. Soil EC was correlated with soil mineral N concentration when measured in situ with a portable EC meter (R 2=0.85) or in the laboratory as 1:1 soil water slurries (R 2=0.92). Results suggest that EC can be used to rapidly detect changes in soil inorganic N status in soils where salts and free carbonates are not present in large amounts.

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References

  • Adams P & Winsor GW (1973) Analysis of soil solution as a guide to the nutrient status of glasshouse soil. Plant Soil 39: 649–659

    Google Scholar 

  • Brune DE & Doolittle J (1990) Locating lagoon seepage with radar and electromagnetic survey. Geol Water Sci 16: 195–207

    Google Scholar 

  • Drommerhausen DJ, Radcliffe DE, Brune DE & Gunter HD (1995) Electromagnetic conductivity surveys of dairies for groundwater nitrate. J Environ Qual 24: 1083–1091

    Google Scholar 

  • Firestone MK (1982) Biological denitrification In: Stevenson FE (ed) Nitrogen in Agricultural Soils, pp 289–326. Madison WI, American Society of Agronomy

    Google Scholar 

  • Olsen J (2000) New soil maps spark change. FIN March, pp 78–83

  • Patriquin DG, Blaikie H, Patriquin MH & Yang C (1993) On-farm measurements of pH, electrical conductivity and nitrate in soil extracts for monitoring coupling and decoupling of nutrient cycles. Biol Agric Hort 9: 231–272

    Google Scholar 

  • Raveh A & Avnimelech Y (1973) Minimizing nitrate seepage from the Hula Valley into lake Kinneret (Sea of Galilee). I. Enhancement of nitrate reduction by sprinkling and flooding, J Environ Qual 2: 455–458

    Google Scholar 

  • Rhoades JD (1982) Solubale salts. In: Page AL, Millere RH & Page DT (eds) Methods of Soil Analysis, Part 2. Chemical and Microbiological Properties, pp 167–180. Madison, WI: American Society of Agronomy

    Google Scholar 

  • Rhoades JD & Oster JD (1986) Solute content In: Klute A (ed) Methods of Soil Analysis, Part 1. Physical and Mineralogical Methods, pp 985–1006. Madison, WI: American Society of Agronomy

    Google Scholar 

  • Smith JL & Doran JW (1996) Measurement and use of pH and electrical conductivity for soil quality analysis. In: Doran JW & Jones AJ (eds) Methods for Assessing Soil quality, pp 169–185. Madison, WI: Soil Science Society of America

    Google Scholar 

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Zhang, R., Wienhold, B.J. The effect of soil moisture on mineral nitrogen, soil electrical conductivity, and pH. Nutrient Cycling in Agroecosystems 63, 251–254 (2002). https://doi.org/10.1023/A:1021115227884

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  • DOI: https://doi.org/10.1023/A:1021115227884

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