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Managing Nitrogen and Phosphorus Nutrients for Switchgrass Produced for Bioenergy Feedstock in Phosphorus-Deficient Soil

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  • Haque, Mohua
  • Biermacher, Jon T.
  • Kering, Maru K.
  • Guretzky, John A.

Abstract

There is limited information available explaining the agronomic and economic relationships between yield and nitrogen and phosphorus applications to growing switchgrass produced in phosphorus-deficient soils. The objective of this study was to determine the effects of nitrogen and phosphorus fertilizers on feedstock yield and measures of expected total cost, gross revenue, net return, and breakeven price of feedstock produced in phosphorus-deficient soils in the southern Great Plains. Data were collected from a three-year, two-location agronomic field study conducted in south-central Oklahoma. Two discrete nitrogen treatments (0 and 134 kg ha-1) and four discrete phosphorus treatments (0, 30, 60 and 90 kg ha-1) were randomly assigned to small plots arranged in a randomized complete block designed (RCBD) study. Random effects mixed ANOVA models were used to estimate the effects of nitrogen, phosphorus and nitrogen by phosphorus interactions on feedstock yield and the economic variables specified. Results showed that, on average over site-years, switchgrass yield increases from 10.5 to 12.3 Mg ha-1 with the highest (101-kg ha-1) treatment; however, we found no statistical difference in net profitability between phosphorus treatments. Yield and net return did respond significantly to 135 kg-1 of N ha-1. Our results suggest that phosphorus-deficient soils do not seem to have the same impact on switchgrass yield and profitability as they do for the yields and profitability of other crops traditionally grown in this region.

Suggested Citation

  • Haque, Mohua & Biermacher, Jon T. & Kering, Maru K. & Guretzky, John A., 2012. "Managing Nitrogen and Phosphorus Nutrients for Switchgrass Produced for Bioenergy Feedstock in Phosphorus-Deficient Soil," 2012 Annual Meeting, February 4-7, 2012, Birmingham, Alabama 119765, Southern Agricultural Economics Association.
  • Handle: RePEc:ags:saea12:119765
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    File URL: http://purl.umn.edu/119765
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    References listed on IDEAS

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    1. Biermacher, Jon T. & Epplin, Francis M. & Brorsen, B. Wade & Solie, John B. & Raun, Bill, 2006. "Precision Nitrogen Fertilization Technology with Micro Grids," 2006 Annual meeting, July 23-26, Long Beach, CA 21046, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    2. Duffy, Michael & Nanhou, Virginie, 2002. "Costs of Producing Switchgrass for Biomass in Southern Iowa," Staff General Research Papers Archive 10346, Iowa State University, Department of Economics.
    3. Hallam, Arne & Anderson, I. C. & Buxton, D. R., 2001. "Comparative Economic Analysis of Perennial, Annual and Intercrops for Biomass Production," Staff General Research Papers Archive 5076, Iowa State University, Department of Economics.
    4. Gelson Tembo & B. Wade Brorsen & Francis M. Epplin & Emílio Tostão, 2008. "Crop Input Response Functions with Stochastic Plateaus," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 90(2), pages 424-434.
    5. Mooney, Daniel F. & Roberts, Roland K. & English, Burton C. & Tyler, Donald D. & Larson, James A., 2008. "Switchgrass Production in Marginal Environments: A Comparative Economic Analysis across Four West Tennessee Landscapes," 2008 Annual Meeting, July 27-29, 2008, Orlando, Florida 6403, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
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    Cited by:

    1. Timmons, David, 2013. "Social Cost of Biomass Energy from Switchgrass in Western Massachusetts," Agricultural and Resource Economics Review, Northeastern Agricultural and Resource Economics Association, vol. 42(1), April.

    More about this item

    Keywords

    bioenergy feedstock; economics; phosphorus-deficient soils; nitrogen; switchgrass; Crop Production/Industries; Environmental Economics and Policy; Production Economics;

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