Pitchcare Measuring Evapotranspiration Many factors
influence the rate of ET on your playing surface; these include the grass species, the height of cut and the weather
Did someone say ET?
ET, the often quoted, but never quite explained. What is it? and should we be interested in it? Does it mean evergreen turf? electric trimmers?, elm trees? or extra-terrestrial? The answers to these and many more questions are deeply embedded in the soil-plant-water continuum, and this article aims to unravel a tiny bit of its mystery
When this loss of water is combined with the loss most people refer to it. Amazingly ET can account for up to 80% of moisture loss from the soil, so by meet the demands of current and future
playing surface; these include the grass species, the height of cut and the weather, which due to its constantly changing nature results in a playing surface to the next. So how do you determine ET?
The methods employed for determining ET
range from direct measurement with lysimeters, reference measurements with atmometers such
methods, a few terms need to be explained. as it is referred to. This is a reference point that is used in determining the ET for all crops, and between ETc and ETo i.e. the factor that ETo is
scheduling, without even knowing it; this could
I
water is applied, whereas the converse can apply to another green on the same site.
simplest method is to use a ‘weighing lysimeter’ rootzone and turfgrass as the playing surface. The lysimeter is saturated and allowed to drain weight, and then set into the ground, ideally the playing surface or adjacent to it in an area that has the same environment/maintenance regime as the actual playing surface. The lysimeter is then reweighed 24 hours later, and the ET can then be If you don’t want to dig holes and insert
of atmometers. These have the added advantage that they do not interfere with the playing surface, site, which will enable you to adjust your water not been a great deal of research on sports turf In an ever changing world where global
warming and declining resources are at the forefront of European Union environmental water has become crucial. In other sectors of land management, for instance agriculture, the management.
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