En savoir plus 
Grass: the 1948 yearbook of agriculture: Washington, D.C., U.S. Dept of Agriculture, included on CD-ROM.
Table des matières
Foreword ix
Wendell Berry Preface xiii
 Acknowledgments xv
 Contributors xvii 
Part One Past is Prologue 1 Grass in the Timeline of Agriculture 3
Frederick Kirschenmann, Terry Gompert, and Allen Williams 2 H. A. Wallace, J. J. Ingalls, O. S. Aamodt, and Other Voices of the 19th and 20th Centuries 15
Vivien Gore Allen and John Herschel Fike 3 Reflections from 
Grass: The 1948 Yearbook of Agriculture 29
Walter F. Wedin and Steven L. Fales Part Two The Present: Transitions over 60 Years 4 Grassland: Definition, Origins, Extent, and Future 57
Matt A. Sanderson, David Wedin, and Ben Tracy 5 The Western United States Rangelands: A Major Resource 75
Kris Havstad, Debra Peters, Barbara Allen-Diaz, James Bartolome, Brandon Bestelmeyer, David Briske, Joel Brown, Mark Brunson, Jeff Herrick, Lynn Huntsinger, Patricia Johnson, Linda Joyce, Rex Pieper, Tony Svejcar, and Jin Yao 6 Grazinglands, Forages, and Livestock in Humid Regions 95
Craig C. Sheaffer, Lynn E. Sollenberger, Marvin H. Hall, Charles P. West, and David B. Hannaway 7 Grass-based Farming Systems: Soil Conservation and Environmental Quality 121
Jeremy W. Singer, Alan J. Franzluebbers, and Douglas L. Karlen 8 Urban, Suburban, and Rural Amenities of Grass 137
A. J. Turgeon Part Three The Forward Look: Opportunities and Challenges 9 Grasses and Legumes: Genetics and Plant Breeding 157
E. Charles Brummer, Joseph H. Bouton, Michael D. Casler, Mark H. McCaslin, and Blair L. Waldron 10 People, Grassland, and Livestock in Revitalized Rural Communities 173
Paul Lasley, Maynard Hogberg, Zane Helsel, and Andrew Larson 11 Grass and Human Nutrition 189
Heather D. Karsten and David J. Baer 12 Grasses and Legumes for Cellulosic Bioenergy 205
M. D. Casler, E. Heaton, K. J. Shinners, H. G. Jung, P. J. Weimer, M. A. Liebig, R. B. Mitchell, and M. F. Digman 13 Grasses and Legumes for Bio-based Products 221
Paul J. Weimer and J. Bradley Morris 14 The Road Ahead: Policy, Programs, and Progress 235
D. J. Undersander, J. H. Bouton, and M. A. Massengale Index 249
A propos de l'auteur
Walter Wedin is Adjunct Professor in the Department of Agronomy and Plant Genetics at the University of Minnesota, and Emeritus Professor in the Department of Agronomy at Iowa State University. His particular professional interests are in forages and grazing lands. 
Steven L. Fales is Professor of Agronomy at Iowa State University. His research and teaching have focused on improving forage management for economic and environmental sustainability and on understanding elements of forage and biomass composition and quality for livestock productivity and bioenergy applications.