The bulk of soil is made up of a mixture of organic matter, rock and mineral particles. However, it's the air, water and nutrients in the ground that the growing plant really relies on.

Before applying fertilizer or any other soil amendment, it's a good idea to see what the soil already contains. That way you won't be inadvertently increasing a nutrient the soil already has plenty of ...

Purdue Extension publication HO-71 entitled Collecting Soil Samples for Testing provides specific advice on taking a proper soil sample. A basic soil test measures phosphorus, potassium, pH, and ...

Whether you're new to soil science or been at it for years, there's never a bad time to review the basics, and that's what ...

As water drains through soil it leaves space for air between soil particles. You can test for water drainage by cutting both ...

L.A. County Department of Public Health convened experts for a webinar that aimed to answer questions that residents have ...

Have you put much thought into your garden yet this year? Now is a great time to take a soil sample, consider plant placement within the garden, and to get started planting some of the cool season ...

The decision surprised L.A. County officials. The U.S. Army Corps of Engineers said Wednesday that it won’t order soil testing at properties damaged by the Eaton and Palisades fires after they ...