Baseline Systems BaseStation 3200 - Manual (Page 40)

C h a p t e r 2 – B a s i c P r o g r a m m i n g
Page 38
Baseline 3200
yes on a day will allow a start time to start the program.

A program that is started on one day will continue to run until it
completes, even if it needs to continue to the next day, even if the next
day is not a water day – this means starting a six hour program at 10 PM
on Monday will finish up at 4 AM on Tuesday, even if Tuesday is not a yes
day..
The other options for Day Intervals are: even days of the month, odd days of the month, odd
days of the month excluding the 31
st
day of the month, and historical ET calendar (explained in
the next section).
Historical ET Based Watering
One of the key recipe points for a healthy lawn is watering deep and less frequently to train the
grass roots to grow deep. This Day Interval mode was specifically developed to enable this
watering practice by being able to set an adjusting water interval for the entire year without
having to adjust times and frequency multiple
times during the season. By selecting a water
time that will apply ½” of water and then
changing the frequency of watering based on the
historical ET needs of the lawn provides a great
step beyond flat schedules.
Historical ET Calendar
The Historical ET Calendar screen, seen to the
right, gives a view of the year. Each month is
given two intervals, one for the first half and the
other for the second half. The intervals represent the number of days between watering cycles.
The day intervals can be customized using the following steps:

Set zone water times that will apply ½ inch of water each watering cycle

For each ½ month of the year, there is a historical ET deficit, which is converted into
the number of days between watering to maintain the soil moisture level (each cycle
putting down ½ inch). For historical ET deficit data for your region, consult with your
local Agricultural Cooperative Extension office – you can find a national register of the
extension offices at:
http://www.csrees.usda.gov/Extension/ .

Each of these day interval values is then programmed into the calendar for the
corresponding ½ month of the year.

When coupled with upper limit watering strategy using biSensors (this mode will do
fine adjustments on the run time to maintain proper moisture real-time –
compensating for non-historical weather behavior) this is a very effective watering
setup.
Soil Moisture Based Watering
Using soil moisture biSensors allows watering decisions to move from calculated guess work to
grass root level measurement of moisture where the plants need it. After installing the biSensors
need to be programmed, and there are several decisions that must be made curing this
programming process.