Browsing by Author "Kim, K."

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    Assessing SANREM's impacts in Lantapan: Results of a survey
    Buenavista, Gladys; Coxhead, Ian; Kim, K. (Madison, Wisc.: University of Madison-Wisconsin, 1998)
    In this paper we report on a project impact study conducted at the Lantapan, Philippines field site of the SANREM CRSP project. To substitute for "with project" and "without project" samples of respondents (since other sources of heterogeneity may divide these) we construct several measures of "distance" from the project and locate our sample along these measures. While hypotheses of statistical causation remain to be tested, preliminary analysis of the survey results indicates that proximity to the project is positively correlated with heightened awareness of environmental linkages and concepts, more "environment-conscious" attitudes, and a higher propensity to adopt relatively costly sustainable agriculture practices such as integrated pest management (IPM), hedgerows and contour strips. These findings emerge in spite of a relatively brief project life (less than five years) and a concentration of project activities on research rather than training or extension. We conclude from the latter observation that a participatory
  • How do national markets and price policies affect land use at the forest margin? Evidence from the Philippines
    Coxhead, Ian; Rola, Agnes C.; Kim, K. (Madison, Wisc.: University of Wisconsin Press, 2001)
    Deforestation, land degradation, and watershed degradation commonly result from expansion of upland agriculture in the developing countries of the tropics. This paper examines the influence of market factors on farmers' decisions by evaluating market integration and the linkages between policy and markets. The authors suggest that if market factors do significantly influence agricultural management choices, market policy instruments may be very effective for addressing upland sustainability issues. Their findings support the efficacy of increased dissemination of information from the national level and policy advocacy.
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    Philippine development strategies, price policies and national markets: Growth, policies and upland resource use
    Coxhead, Ian; Rola, Agnes C.; Kim, K. (Los Baños, Philippines: Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 2001)
    In the rest of the paper we focus on a case study from the SANREM study site in Lantapan, Bukidnon. We first provide a brief survey of major macroeconomic and policy trends in the Philippines and their possible effects on resource use decisions in an upland watershed like Lantapan. While we have information about macroeconomic and economy-wide phenomena, and about upland farmers' decision-making processes, we know little about the nature and strength of market links between the two. Accordingly, we then use econometric analysis to examine linkages between national and farm-gate prices on the basis of data collected in Lantapan over the period 1994-1999.
  • Recovering soil productivity attributes from experimental data: A statistical method and an application to soil productivity dynamics
    Kim, K.; Barham, B.; Coxhead, Ian (Amsterdam ; New York, N.Y.: Elsevier Scientific Pub. Co., 2000)
    This paper develops a method for deriving information about soil quality trends from a limited related datasets (such as from a long-term crop experiment), for use when a time series of direct measurements is not available. This paper also applies a dynamic statistical estimation method to derive a measure of the generation and level of soil productivity based on a time series data set of crop yields, nutrient inputs, and management techniques. Although the connection between inputs and productivity is well known, this analysis presents new understanding of some of the dynamics of this relationship, such as results indicating that the impact of crop choice on productivity declines over the studied time frame. The authors findings reveal that Nitrogen fertilizer is only a short term substitute for soil productivity; long term soil quality loss due to intensive agriculture cannot be reversed by nitrogen inputs. Regardless of N fertilization rates, continuous corn cultivation rapidly decreases soil productivity. In contrast, rotational cropping with legumes can rapidly regenerate soil productivity. The methods presented in this paper are advantageous because they are applicable with only limited time series data. The findings suggest important venues for further research in international issues of sustainable agriculture.