I have replaced some of the soil and resodded areas of my lawn that were affected by nematodes. Is special care needed to strengthen the roots and help them compete with these pests?
Strong, vigorous roots are the secret to beating nematode problems. Your site preparation has reduced the population, and the new grass can get off to a good start. Encourage root growth by keeping the soil extra moist during the first few weeks of establishment; then water as needed. Once established, water only when sections of the lawn start to show signs of stress by turning a gray-green color and curling the leaves. Then water the entire lawn as much as ¾-inch to rewet the soil profile, The stress exhibited by the wilting between waterings encourages additional root growth to help the grass resist nematodes. Toughen up the lawn a bit more with feedings to encourage strong growth. Apply the first feeding three to four weeks after sodding. Use a 16-2-8, 15-0-15 or similar fertilizer to promote a pest resistant-lawn. Additional feedings typically are made in March, July and October.
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