Tillers share the same root mass with the main stem. During tillering, the major management consideration is whether stands are adequate to achieve yield goals. Management inputs will not compensate for skimpy or erratic stands cased by insects, seedling diseases, poor seed quality, herbicide injury, etc. Fall N application of 25 to 40 pounds per acre usually increases winter survival, tillering, and yield. If tiller development is a historic problem in a given field, close attention must be given to P soil test recomm-endations prior to planting.
Winter wheat can continue to tiller for several weeks.
Depending upon the planting date and weather conditions, tillering can either be interrupted by or completed prior to the onset of winter dormancy. Most of the tillers that contribute to grain yield potential are completed during this stage. Most tillers have been formed by this stage, and the secondary root system is developing. Winter wheats, which may have a prostrate growth habit during the development of vegetative parts, begin to grow erect. Leaf sheaths thicken.