Soil Fertility Management in Agroecosystems

In Soil Fertility Management in Agroecosystems, Editors Amitava Chatterjee and David Clay provide a thoughtful survey of important concepts in soil fertility management. For the requirements of our future workforce, it is imperative that we evolve our understanding of soil fertility. Agronomists and soil scientists are increasingly challenged by extreme climatic conditions. Farmers are experimenting with integrating cover crops into rotations and reducing the use of chemical fertilizers. In other words, there is no such a thing as a simple fertilizer recommendation in today's agriculture. Topics covered include crop-specific nutrient management, program assessment, crop models for decision making, optimization of fertilizer use, cover crops, reducing nitrous oxide emissions, natural abundance techniques, tile-drained conditions, and soil biological fertility. Preface vii

Contributors ix

Soil Fertility: Current US Situation and Challenges
Amitava Chatterjee 2

Crop-Specific Nutrient Management
David Franzen 12

Assessing a Fertilizer Program: Short- and Long-Term Approaches
David E. Clay, Graig Reicks, Jiyul Chang, Tulsi Kharel, and Stephanie A.H. Bruggeman 44

Introduction to Conceptual Models, Calculating and Using Rate Constants, Economics, and Problem Solving
Gregg Carlson, David E. Clay, and Sharon A. Clay 56

Optimization of Financially Constrained Fertilizer Use
Charles Wortmann and Kayuki Kaizzi 66

Cover Crops Impacts on Nitrogen Scavenging, Nitrous Oxide Emissions, Nitrogen Fertilizer Replacement, Erosion, and Soil Health
Amitava Chatterjee and David E. Clay 76

Soil and Nitrogen Management to Reduce Nitrous Oxide Emissions
Jerry L. Hatfield 90

The Use of Enriched and Natural Abundance Nitrogen and Carbon Isotopes in Soil Fertility Research
David Clay, Cheryl Reese, Stephanie A.H. Bruggeman, and Janet Moriles-Miller 110

Soil and Fertilizer Management Practices to Control Nutrient Losses under Subsurface Tile-Drained Conditions
Amitava Chatterjee 124

Biological and Biochemical Tests for Assessing Soil Fertility
Warren A. Dick and Steven W. Culman 134

Amitava Chatterjee is an associate professor of soil science at North Dakota State University.

Dr. David E. Clay received a B.S degree from the University of Wisconsin (Madison), M.S. Degree from the University of Idaho, and Ph.D. from the University of Minnesota. Currently, he is Professor of Soil Science at South Dakota State University. He has served on the Editorial Board for the Agronomy Journal in a number of roles including Associate Editor, Technical Editor, and Editor (starting 2018).