I am sure you have noticed that there are quite a few wheat fields (and rye as well) that have yellow patches or streaks in them. There are a few different reasons why we are seeing this now.
-Manganese Deficient - Some of the early planted fields are showing manganese deficiency in soils that are prone to it, mainly muck. Since the plant is near dormancy, there is no use going in with any foliar fertilizer now. However, take note of the patches and keep an eye on them in the spring. If symptoms reoccur in the spring, a good time to apply the foliar fertilizer is with your herbicide/fungicide application.
-Compaction - Due to the very wet and cold October that we had, the wheat seedlings have run out of seed nutrient reserves and root growth is very slow. Compacted areas in the field are further impacting root growth and are showing a broad mix nutrient deficiencies. This is very evident on manured fields as you can see tire track yellow streaks at regular intervals across the field. Most areas will recover with a few warm rains in the spring. Again, it is good to note the areas and check in the spring to determine if there was winter kill.
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