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A Model-based Approach for Determining Optimal Lime Application Rate and Frequency

Author

Listed:
  • Shoghi Kalkhoran, S.
  • White, B.
  • Polyakov, M.
  • Chalak Haghighi, M.
  • Mugera, A.
Abstract
Soil acidification reduces land productivity across agricultural systems worldwide. The standard remedy is to periodically apply lime to the soil surface which, over a number of years, is assimilated into the soil profile and raises soil pH. Lime applications can be viewed as an investment in soil productivity. This paper presents a dynamic model to determine an optimal lime application for a cereal crop. The results for the Western Australian Wheatbelt using wheat as an indicator of soil productivity, show that optimal application rate and frequency vary with rainfall and initial soil pH. Incorporating lime through the soil profile increases net present value by up to 6% compared to traditional surface lime applications and reduces lime application rates and required time for soil acidity amendment.

Suggested Citation

  • Shoghi Kalkhoran, S. & White, B. & Polyakov, M. & Chalak Haghighi, M. & Mugera, A., 2018. "A Model-based Approach for Determining Optimal Lime Application Rate and Frequency," 2018 Conference, July 28-August 2, 2018, Vancouver, British Columbia 275912, International Association of Agricultural Economists.
    • Handle: RePEc:ags:iaae18:275912
    DOI: 10.22004/ag.econ.275912
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    References listed on IDEAS

    as
    1. Lukin, Vladimir V. & Epplin, Francis M., 2003. "Optimal frequency and quantity of agricultural lime applications," Agricultural Systems, Elsevier, vol. 76(3), pages 949-967, June.
    2. Mulungu, Kelvin & Tembo, Gelson & Kabwe, Stephen, 2012. "An Economic Analysis of Precision Application of Climate at Reduced Rates," 2012 Eighth AFMA Congress, November 25-29, 2012, Nairobi, Kenya 159407, African Farm Management Association (AFMA).
    3. O'Connell, Michael & Bathgate, Andrew D. & Glenn, N.A., 1999. "The value of information from research to enhance testing or monitoring of soil acidity in Western Australia," 1999 Conference (43th), January 20-22, 1999, Christchurch, New Zealand 124501, Australian Agricultural and Resource Economics Society.
    Full references (including those not matched with items on IDEAS)

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    Keywords

    Agricultural and Food Policy;

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