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Stephen Padley Landscapers
Features - Irrigation
Approximately in mean volume, 25 litres of water per square metre evaporates
over a period of 7 days from a lawn area, an average lawn area of 5 metres
by 10 metres could quite easily dispense as a whole 180 litres of water
in vapour every day.
Frequency for the use of irrigation will always depend on the type of
soil, site, turf and the situation. As a rule of thumb irrigation applied
twice every seven days should be sufficient for most lawn areas, (depending
on the volume of water applied), all types of soil beneath the lawn areas
should be allowed to dry out to a certain extent to allow air to penatrate
and help stimulate a deeper root system.
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Volume of water applied should allow a minimum of five centimetres of
seepage into the soil, no matter which form of irrigation is applied.
Try a test, place one empty standard jam jar half way across the spray
pattern, make a note of the time, allow 2.5 centimetres of water to
accumulate in the receptacle, this will be the equivalent of the 25
litres per square metre lost in the hot climate.
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| Sufficient water will have been applied to allow for seepage
when a mimimum of 5 centimetres of water has accumulated, make a note of
the time - you will now know how long for the duration of future water applications. |
Shallow daily irrigation is an unwise policy and should be avoided; the
benefits are minimal down to only dampening the surface and encouraging
the roots to rise to the surface, thus weakening the turf strength. Optimum
time for applying irrigation is in the evening or preferably early morning,
never midday or high sun times.
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