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 ...

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 ...

When you grow corn, the first nutrient you think about is nitrogen (N). But phosphorus (P) is equally important. The right timing and placement can boost yield—up to 30 bu. to 40 bu. per acre in years ...

Regardless of whether it is for a row crop, pasture or cover crop, one expert agrees that a soil test is must. Dodge City, Kansas-based ServiTech Senior Laboratory Agronomist Fred Vocasek, says that ...

The best way to minimize fertilizer expenditure and maximize efficiency is one you’ve probably heard of before. The 4Rs — right product, right rate, right time and right placement — tell you exactly ...