Watering Home Lawns
During the growing season, most lawns will do very well with a maximum total of one inch of water a week, coming either from rain or applied water. Soil conditions may dictate that the amount be applied in two settings, approximately two or three days apart. This amount of water, properly applied, is all that is required for the health or the grass, providing it is applied evenly and saturates the underlying soil to a depth of 4 to 6 in.
Infrequent and deep watering is preferred to frequent and shallow watering because the roots will only grow as deeply as their most frequently available water supply. Deeply rooted grass has a larger “soil-water bank” to draw moisture from and this will help the grass survive drought and hot weather that rapidly dries out the upper soil layer.
Proper watering techniques are a critical aspect of lawn watering, equal in importance to the issues of when to water and how much to water. Here are several key factors to proper technique:
Avoid hand sprinkling because it cannot provide the necessary uniformity. Most people do not have the patience, time or “eye” to adequately measure what is being applied across any large areas of lawn. The only possible exception to this guideline would be that the need to sprinkle the surface of the grass to cool it or to provide additional water near buildings or other heat-reflecting surfaces.
Understand the differences between sprinkler designs because each type has its advantages and disadvantages. Its proper use will be determined by the type of sprinkler you select.
Follow These Steps
Arrange the cans at random distances away from any sprinkler, but all within the area you assume is being covered.
Run the sprinkler for a specific amount of time, say a half-hour or run the water until a specific amount of water is in at least one can, say ½ in.
Check water cans for uniformity. A variation greater than of 25-30% calls for replacing/adjusting the sprinkler system or relocating it.