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International Journal of Agricultural Sustainability

Volume 2, Number 1

Erin M. Tegtmeier and Michael D. Duffy

External Costs of Agricultural Production in the United States.......1

K.A. Leach, K.D. Allingham, J.S. Conway, K.W.T. Goulding and D.J. Hatch

Nitrogen Management for Profitable Farming with Minimal Environmental Impact: The Challenge for Mixed Farms in the Cotswold Hills, England.......21

Maren Oelbermann, R. Paul Voroney and Donald C. L. Kass

Gliricidia sepium Carbon Inputs and Soil Carbon Pools in a Costa Rican Alley Cropping System.......33

Alice Woodhead, Wilfrid Legg, and Roger Packham

Developing Policy for Communities Managing Diffuse Source Pollution: A Case Study from Subtropical Catchments of NSW, Australia.......43

Ronnie Vernooy and Yiching Song

New Approaches to Supporting the Agricultural Biodiversity Important for Sustainable Rural Livelihoods.......55

Paul Van Mele and Ho Van Chien

Farmers, Biodiversity and Plant Protection: Developing a Learning Environment for Sustainable Tree Cropping Systems.......67