Irrigation - Knowledgebase Question

Miamisburg, Oh
Question by pappy_45459
July 17, 2009
I currently water three time a week starting at 4A for a period of 45 minutes.Is this a sufficient amount of time or too much? I ask this question, becuase I'm beginning to see

Answer from NGA
July 17, 2009


How often and how long to water are really difficult to suggest - it all depends upon your soil type, turf type and the weather. In general, turfgrass needs about an inch of water per week, applied in 1/2 inch intervals twice a week in the summer months. The best way to determine how much water your turf is getting is to set several empty tuna or cat food cans out on the lawn and run your sprinklers as usual. Then check the amount of water in the cans. It should be about a half an inch. If not, run the sprinkers longer. If more than that, you're wasting water and can cut the amount of time your sprinklers stay on. Sandy soils seem to suck up the water quickly; clay soils take a little longer for the water to soak in, but the soil remains moist for a longer period of time. If you water on a daily basis you may be encouraging the roots to remain shallow, which makes the grass more susceptible to drought like symptoms. If you water infrequently but deeply, the roots will grow deep and be less susceptible to brown out in the hot summer months. Check to see how much water your turf is actually getting and you may be able to adjust your watering schedule to help your lawn remain greener over the summer months. Hope so!

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