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Soil Conservation Decisions and Upland Corn Productivity: A Philippine Case Study

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Author Info

  • Agnes C. Rola

    ()
    (University of the Philippines Los Baños, Philippines)

  • Asa Jose U. Sajise

    ()
    (University of the Philippines Los Baños, Philippines)

  • Dieldre S. Harder

    (Resources, Environment and Economics Center, Inc.)

  • Joe Marvin P. Alpuerto

    (University of the Philippines Los Baños, Philippines)

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    Abstract

    This paper empirically investigates whether farmers who adopt soil conservation measures derive productivity gains. A twelve-year (1994-2006) panel data in Bukidnon, Philippines was used to quantify the indirect relationship between soil conservation technology adoption and upland corn productivity. A two-stage econometric analysis was done. First, the probability of adoption was estimated. The associated inverse Mill’s ratio obtained from the first stage was used to correct the second stage endogenous switching stochastic frontier model estimation of the determinants of corn yield. Results showed that in normal times, upland corn productivity is positively affected by abatement of soil erosion. Results further suggest that farmers adopting soil conservation technologies become less flexible in their land use decisions during periods of drought, thereby experiencing lower yields than the non-adopters.

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    File URL: http://beta.searca.org/searca/ajad/files/072811102557_Rola_Final.pdf
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    Bibliographic Info

    Article provided by Southeast Asian Regional Center for Graduate Study and Research in Agriculture in its journal Asian Journal of Agriculture and Development.

    Volume (Year): 6 (2009)
    Issue (Month): 2 (December)
    Pages: 1-20

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    Handle: RePEc:sag:seajad:v:6:y:2009:i:2:p:1-20

    Note: ORDER INFORMATION. Dr. Mariliza V. Ticsay, SEARCA, College, 4031 Los Banos, Laguna, Philippines. E-mail:
    Contact details of provider:
    Postal: College 4031, Laguna, Philippines
    Phone: (63-49) 536-2365
    Fax: (63-49) 536-7097
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    Web page: http://www.searca.org/
    More information through EDIRC

    Related research

    Keywords: soil conservation; soil erosion; externalities; corn productivity; climate risk; Philippines;

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    References

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    1. John Fitzgerald & Peter Gottschalk & Robert Moffitt, 1998. "An Analysis of Sample Attrition in Panel Data: The Michigan Panel Study of income Dynamics," Economics Working Paper Archive 379, The Johns Hopkins University,Department of Economics.
    2. Gerpacio, Roberta V. & Labios, Jocelyn D. & Labios, Romeo V. & Diangkinay, Emma I., 2004. "Maize in the Philippines: Production Systems, Constraints, and Research Priorities," Maize Production Systems Papers 7650, CIMMYT: International Maize and Wheat Improvement Center.
    3. Sean Becketti & William Gould & Lee Lillard & Finis Welch, 1985. "The Panel Study of Income Dynamics After Fourteen Years: An Evaluation," UCLA Economics Working Papers 361, UCLA Department of Economics.
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