Environment & Energy
Related: About this forumSimple Tactic Results in Dramatic Water Conservation
http://www.fau.edu/newsdesk/articles/lawn-watering-study.phpA highly visible road sign and simple communication to hundreds of households in South Florida resulted in an astounding 61 percent decrease in lawn watering in the experimental households as compared to the control group.
By gisele-galoustian | 6/20/2017
[font size=3]Rain or shine has new meaning thanks to an innovative, inexpensive and simple tactic developed by researchers at Florida Atlantic University that will really change how people think about watering their lawns. The tactic? A straightforward road sign.
For two years, which included two annual wet and dry seasons, they conducted a unique study in Wellington, a suburban village in South Florida, to demonstrate how you can save a lot of water by simply providing people with more information than just directives, schedules or guidelines about which days of the week they can water their lawns. Wellington provided the perfect venue for this study since the village is located in a region that has distinct wet and dry seasons and that is subject to permanent year-round mandatory water restrictions. Additionally, Wellington was interested in the research and helped to implement the pilot program. Results of their study are published in the current issue of the Journal of Environmental Management.
The Rain-watered Lawn, a pilot program, was implemented as a weather-based add-on water conservation strategy to find out if informing lawn-watering behavior is more effective than just having mandatory water restrictions alone. The study involved a total of 627 households that were divided into two groups: 321 households assigned to an experimental group, and 306 households assigned to a control group who were subject to only the existing water restrictions.
For the study, the researchers created a highly visible road sign that matched existing road signs, and placed them close to the entrances of the experimental neighborhoods. The purpose of the signs was to communicate rainfall levels in the last seven days and to remind people that most South Florida lawns only need one inch of water per week. The bottom of the sign read: Is rainfall alone meeting the water needs of your lawn? At the same time that the signs went up, households in the experimental group received a postcard and leaflet about the signs and informed them that existing water restrictions were not being replaced or modified.
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Phoenix61
(17,003 posts)I bought a rainwater gauge and paid attention when I had the sprinkler going. I was running it for 4 hours when I only needed to run it for 45 minutes. Dropped my water bill down and I swear the lawn looks better.
JayhawkSD
(3,163 posts)If your soil is very sandy and drains very rapidly, you may need to water a quarter inch to a half inch or so every day.
OKIsItJustMe
(19,938 posts)One question to ask yourself may be, am I growing the right sort of grass?
https://www.usga.org/content/dam/usga/pdf/Water%20Resource%20Center/turfgrass-water-requirements.pdf
Another question you might ask is am I watering my lawn the right way?
https://www.extension.umn.edu/garden/yard-garden/lawns/watering-lawns/
Figure 2. Deep and infrequent irrigation tends to cause grass roots to grow deeper into the soil, making the plants more drought tolerant. Shallow and frequent waterings lead to shallow-rooted plants with less drought tolerance.
Another question may be, do I need grass at all?
I remember when my aunt and uncle moved to New Mexico, and raised hackles in the neighborhood by growing plants which were appropriate for the climate (rather than a thick carpet of turfgrass.)
JayhawkSD
(3,163 posts)I was making a point, which I still hold to be valid, that a sign saying that we have had two inches of rain this week does not mean that you do not need to water your lawn today.