The price of soil sample testing at the Soil and Plant Testing Laboratory is being reduced as the lab adopts a new testing method.

The old Bray-1 method required multiple samples to provide a full nutrient picture of the sample, slowing the process and increasing the cost. In contrast, the new method, called Mehlich-3, requires ...

The University of Delaware (UD) has rated soils in terms of the likelihood of profitable responses to additions of phosphorus (P) and potassium (K) from fertilizers, manures, and other soil amendments ...

Agricultural soil testing is critical to determining soil’s nutrient concentration and variability across your fields. It is ideal to test your fields’ soil at least every two to three years to inform ...

The Oklahoma State University Extension Soil, Water and Forage Analytical Laboratory on the OSU campus tests more than 58,000 samples each year to protect Oklahoma’s natural resources and support ...

Is colourimetry the future of soil carbon measurement?New research led by Dr Yassine Bouslihim at the National Institute of ...

Most gardeners think soil testing only determines nutrient deficiencies, but the tests also help gardeners understand whether the soil contains adequate nutrients. Basic tests check the soil’s ...

This week's gardening column addresses the importance of neutral pH in your garden soil, as well as why "princess trees" are a royal pain.

Soil color could replace expensive chemical tests, helping farmers monitor fertility and carbon faster and more safely.