Soil nutrients are not even. They are not even across a field and they are not even with soil depth. Nutrients can differ drastically just a few inches of soil away. This is true even in ...

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 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 ...

Before applying fertilizer or any other soil amendment, it's a good idea to see what the soil already contains. That way you ...

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 ...

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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 ...