Author Topic: Introduction to Irrigation  (Read 1826 times)

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Introduction to Irrigation
« on: April 27, 2011, 11:43:37 AM »
Introduction to Irrigation

Irrigation can either be good or bad for an athletic field, depending on how it is used by the turf manager. Established turf requires one inch of water per week. Deep, thorough watering is best for turf. Some fields may be irrigated with inground systems, others with manually installed nozzles, and others may need the use of a rain cannon.

Syringe watering (multiple, light applications) of compacted soil that has been aerated, just to the point of runoff, also helps the soil to hold water and to allow the soil to dry out somewhat between waterings to avoid waterlogging.

On the fields that have the best turf with deep roots, you can water sparingly. You should water to bring soil moisture up after periods of little or no rainfall, prior to core aeration and during and after warm-weather overseeding.

Shallow, frequent watering encourages thatch and weeds. The object is to get the grass roots to grow deep. Roots will grow deep only if water is available deep in the soil. This is why less frequent but deep watering is better. The surface soil dries out but the deep soil remains moist, encouraging the roots to grow deeper. Water will penetrate deeper if you water about 1/2 inch, wait two or three hours and then water one inch.