130 Symposium--Modeling the Economics of Fertilizer Applications

Oral Session
S04 Soil Fertility & Plant Nutrition Nutrient recommendations are being called upon to meet many objectives, such as increased efficiency, increased production, and lower environmental losses; however, farmers, who are the ones making the final fertilization decisions, are most concerned about profitability. This symposium examines various methodologies for incorporating economic variables into fertilizer recommendations. Approaches range from short-term considerations for one nutrient to long-term optimizations that consider multiple factors simultaneously. Presentations will span this range of complexity to assess how far science has come and where it must go in the future to improve the economic decision-making of farmers.


Nutrient Management & Soil & Plant Analysis
Monday, October 22, 2012: 8:00 AM-12:00 PM
Duke Energy Convention Center, Room 206, Level 2

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T. Scott Murrell and Antonio P. Mallarino
T. Scott Murrell
8:10 AM
Optimizing N, P and K Rates Based On Soil Testing, Plant Growth, Fertilizer Costs and Commodity Prices.
Hailin Zhang, Oklahoma State University; David Nofziger, Oklahoma State University; William Raun, Oklahoma State University; Daryl Arnall, Oklahoma State University
8:45 AM
Backing Economic Optimal N and P Fertilizer Rates Out of Yield Goal Based Fertilizer Recommendations.
Kevin C. Dhuyvetter, Kansas State University; Terry Kastens, Kansas State University
9:20 AM
Developing and Using Nonlinear Response Functions: A Potential Method for Nutrient Recommendations.
David Clay, South Dakota State University; Gregg Carlson, South Dakota State University
9:55 AM
10:10 AM
Maximizing Net Returns to Finance-Constrained Fertilizer Use.
Jim A. Jansen, University of Nebraska-Lincoln; Charles Wortmann, University of Nebraska-Lincoln; Matthew C. Stockton, University of Nebraska-Lincoln; Kayuki C. Kaizzi, National Agricultural Research Laboratories-Kawanda
10:45 AM
A Regional Bio-Economic Model of Nitrogen Use in Cropping.
Pierre Merel, University of California, Davis; Fujin Yi, University of California, Davis; Juhwan Lee, University of California-Davis; Johan Six, UC Davis Agroecology Lab
11:20 AM
Economic Analysis of Nitrogen Recommendations in an Environment of Increased Price Volatility.
Danielle E. Urick, Purdue University; Nicole J. Olynk, Purdue University; Robert Nielsen, Purdue University; James J. Camberato, Purdue University
12:00 PM