Building Fertile Soil - Guide to creating and maintaining good quality soil.Soil - Gardening and in particular, soil information from the Oregon State University.
Soil and Fertilizers - Publications about fertilizing a number of different plants, from the North Dakota State University.
Soil Management - A number of publications (in PDF format) dealing with topics about soil.
Soil Resource Management - References about the fertility, compaction, testing and conservation of soil. Published by the University of Nebraska.
Understanding Your Soil - An introduction to understanding the basic components of soil.
The Weight of Soil - Details and explains how to weigh soil.
Iron Chlorosis - Explains iron chlorosis in trees and plants, and how to correct it.
Lead Contamination In The Garden, HYG-1149-93 - Ohio State University
Guidelines for Choosing a Soil-Testing Laboratory, HYG-1133-99 - Ohio State University
Soil Testing is an Excellent Investment for Garden Plants and Commercial Crops, HYG-1132-99 - Ohio State University
Micronutrient Disorders, HYG-1252-98 - Ohio State University
Fertilizing Vegetable Garden Soils, HYG-1601-92 - Ohio State University
Improving Soils For Vegetable Gardening, HYG-1602-92 - Ohio State University
Improving Soil - Instructions for improving soil. Includes soil components, soil testing and soil amendments.
Physical Characteristics of Growing Mixes, HYG-1251-97 - From Ohio State U.
