If you intend to keep winter wheat in your rotation, some fallow prior to planting winter wheat probably will be necessary. Another way to get back to winter wheat is to plant a short-season annual forage in the spring and harvest the forage prior to August 1. Wheat should be planted no-till into the forage stubble. If it was a dry summer and no stored soil moisture is present, you may have to wait until spring and go back to another summer crop. Zinc deficiency on wheat has never been observed in Colorado, but it is common for corn and sorghum.
Wheat is the crop most likely to respond to phosphorus fertilization.
Base the amount of fertilizer to apply, if any, on soil test results. Ideally, collect separate samples from various soils on your farm. Sample eroded hillsides separately from summits and separately from lower-lying areas. Soil color is a good way to judge whether soils should be sampled separately. Apply fertilizer according to each soil test if possible.