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Factors affecting nutrient supply rate measurements with PRS™-probes

Sulewski, C.A., K.J. Greer, J.J. Schoenau and V.S. Baron . 2002. Soils and Crops Workshop Proc., pp (in print). Univ. Saskatchewan


This poster includes background information about how PRS™-probes are used to measure soil nutrient supply rates and how factors of the soil environment influence nutrient supply rate measurements. The discussion contains research examples of the effects of soil moisture, soil temperature, and competing sinks as well as the effect of the duration of PRS™-probe burial. These effects are important to consider when interpreting supply rate data.

Key Words

PRS™-probe, nutrient supply rate, nitrogen, phosphorus, potassium, sulfur, soil moisture, soil temperature, root competition