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 ...

Should the high school auditorium building committee have tested for contaminated soil before work began? It's an easy question to ask now that work has begun and contamination found. Of course, those ...

This photo shows a yellowing young leaf, though its veins remain green, indicating that this plant is hungry for iron. Plants do tell us when they are hungry — with poor or distorted growth, and with ...

This is my periodic, obligatory soil test article. Don’t let your initial knee jerk reaction prevent you from reading! This topic isn’t as “sexy” as organic gardening, pollinator plants or even cherry ...

Along with the development of new instrumentation, the test procedure itself was also standardized. By “walking” the potential probe toward the current probe and graphing the measurements, the ...

A soil test for phosphorus represents an index of phosphorus availability to crops. A soil test needs to correlate to crop response in order to provide a useful index of crop response and any ...

For months, federal officials have said post-cleanup soil testing for fire-stricken homes in L.A. was unnecessary. Now, they ...