FERTILIZATION (continued) Nitrogen increases the growth rate of roots and shoots of the turf grass growth and development. It assures rapid establishment and stimulates root growth. A deficiency of phosphorous causes a reduction in the tiller shoot growth, and moisture content of the grass plant. The nutrient is required at much less of a rate than that of nitrogen and potassium. Potassium increases root development, particularly branching. It also improves heat, cold and drought hardiness as well as resistance to disease. A pre-emergent weed killer can be applied in the spring with the fertilizer to help prevent weeds. A post-emergent weed killer can be applied in the late spring for broadleaf weeds such as dandelions that are visible.
It is important to remember that with fertilization, too much can be harmful as not enough. Your local garden center can help you determine your lawn’s needs.
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