for Palm Computers from the New Mexico State University.

USDA organization with mission to develop, evaluate, and promote management practices that enhance surface and ground water quality while conserving soil and water resources. Site has software, selected publications, staff directory, and information on current research.

Detailed, research-based articles for better management decisions produced weekly from spring to fall by Iowa State University's Entomology Department.

from the Natural Resources Conservation Service. An extensive collection of articles and resources.

Weed populations change in response to agricultural practices. The influence of weeds on soils and their use as indicators is described. Many tables and literature for further research.

Explains soil properties, deficiencies and soil tests.

A device used to evaluate the resistance to penetration of soils. It gives an indication of the soil compaction. Description with usage information and contact information are included on this site.

Formerly the U.S. Soil Conservation Service. NCRS program areas include soil survey, conservation assistance, farmland protection, grazing lands conservation, and watershed protection.

Educational site about soil, soil processes and a soil zoo.

A extensive list of links.