Soils in north-central Oregon frequently test below 0.5 mg kg^-1 for DTPA-extractable Zn.� Consultants and researchers agree these levels are low, but questions about the likelihood of a plant response to Zn fertilization warrant attention.� Additional concerns about the effect of available P on Zn nutrition also need to be addressed.� Relevant field experiments, conducted during the last ten years, utilized treatments that consisted of� two Zn rates (0 and 5 kg Zn ha^-1) applied in factorial combination with 0, 7.5, and 15 kg P ha^-1).� Treatments were arranged in a RCB-4 design on deep silt loam soils.� Soil pH was slightly-to-moderately alkaline in the top 30 cm of the soil profile. �Organic matter content was low (9 to 11 g kg^-1).� �The CEC was approximately 12.5 cmol kg^-1, and sodium bicarbonate-extractable P levels were less than 12 mg kg^-1.� Crop-year precipitation ranged from l80 to 300 mm.� Treatments were applied to spring and winter varieties of wheat (Triticum aestivum L.) using a customized, no-till drill that placed fertilizer in close proximity to the seed.� Plant samples were collected from plots of wheat after the first node was detectable just above the soil surface.� Grain harvest was accomplished using a small-plot combine. �Grain yield and test weight were adjusted to 100 g kg^-1 moisture content.� An interaction between P availability and Zn uptake was demonstrated with data from this research.� Yield response was observed in one of five field experiments. ����