Agricultural Extension
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Item Kuhn-Tucker and Multiple Discrete-Continuous Extreme Value Model Estimation and Simulation in R: The rmdcev Package(The R Foundation, 2020) Lloyd-Smith, PatrickThis paper introduces the package rmdcev in R for estimation and simulation of Kuhn-Tucker demand models with individual heterogeneity. The models supported by rmdcev are the multiple-discrete continuous extreme value (MDCEV) model and Kuhn-Tucker specification common in the environmental economics literature on recreation demand. Latent class and random parameters specifications can be implemented and the models are fit using maximum likelihood estimation or Bayesian estimation. The rmdcev package also implements demand forecasting and welfare calculation for policy simulation. The purpose of this paper is to describe the model estimation and simulation framework and to demonstrate the functionalities of rmdcev using real datasets.Item Keeping phosphorus on the land: Workshopping a bridge between agricultural production and water quality(University of Saskatchewan, 2022) Liu, Jian; Elliott, Jane; Baulch, HelenManagement of the phosphorus (P) in prairie soils presents a challenging dilemma. Phosphorus is critical to continued agronomic productivity. Yet, management of P in prairie landscapes is also crucial to the protection of prairie lakes and reservoirs, which are highly vulnerable to issues of nutrient pollution and harmful algal blooms. Here we present detailed insights from a 2-day workshop “Keeping Phosphorus on the Land” where we worked to bridge the disciplines of water quality, and agronomy, and better understand issues, and opportunities within and across these areas of work as they relate to managing soil P. This report includes detailed insights and recommendations that reflect outcomes of presentations, panels, and discussions engaging researchers and practitioners in government, industry and universities from each of Canada’s three prairie provinces. It includes recommendations on ‘actionable’ areas, and areas where further research and dialogue is required. Readers are also directed to our short synthesis report, available here: Liu, J., H.M. Baulch, and J.A. Elliott. 2021. Keeping Phosphorus on the Land: Main Takeaways for Managing Soil Phosphorus in the Prairies. University of Saskatchewan, Saskatoon, Canada. DOI:10.23688/1gvs-5333.Item Keeping phosphorus on the land: Main takeaways for managing soil phosphorus in the Prairies(University of Saskatchewan, 2022) Liu, Jian; Baulch, Helen; Elliott, JaneManagement of the phosphorus (P) in prairie soils faces a challenging dilemma. Phosphorus is critical to continued agronomic productivity. Yet, management of P in prairie landscapes is also crucial to the protection of prairie lakes and reservoirs, which are highly vulnerable to issues of nutrient pollution and harmful algal blooms. In our workshop, “Keeping Phosphorus on the Land” (February 22 & March 2, 2021), we worked to bridge the disciplines of water quality, and agronomy, and better understand issues, and opportunities within and across these areas of work as they relate to managing soil P. After two half-days of meetings that engaged researchers and practitioners in government, industry and universities, we gained a long list of ideas to act on, and a number of crucial new insights. This two-page synthesis highlights several key points that came from the workshop. Readers are directed to our full report to learn about these key points and other areas in more detail, and for a full list of recommendations resulting from the meeting.