Before you start
A Volume schedule needs a tank with a flow rate in gal/min or l/h.
Steps
Open the irrigation scheduler in Hub.
Create a new fertigation or edit an existing one.
Choose the fertigation type: Duration, Volume or Proportional.
Enter the values for that type (see the table below).
Check the values Hub calculates for you.
Save and publish the schedule. The publish summary shows the type and its volumes.
What to enter for each type
Type | You enter | Hub shows |
Duration (default) | A duration | As before |
Volume | The fertilizer volume | The estimated duration, the flush duration and the end time, from the flow rate of the tank |
Proportional | A duration, a water volume and a fertilizer volume | The ratio per 1000 |
Things to know
If the fertigation does not fit in the irrigation event, Hub asks you to reduce the volume or the start delay.
If you change the type, Hub carries the duration or the volume over to the new type using the flow rate of the tank.
The event panel, the chart tooltip and the publish summary show the fertigation type and its volumes.
The edit form keeps the type of each schedule.
Frequently asked questions
Why can't I set a fertigation by volume? A Volume schedule needs a tank with a flow rate in gal/min or l/h. Check that the tank has a flow rate set.
Hub says my fertigation doesn't fit. What do I do? Reduce the fertilizer volume or the start delay so the fertigation fits within the irrigation event.
Will my existing fertigation schedules change? No. Duration is still the default, and the edit form keeps the type of each schedule.
What happens if I switch a fertigation from Duration to Volume? Hub converts the duration to a volume using the flow rate of the tank.
What is the ratio per 1000? For Proportional fertigation, Hub shows the ratio of fertilizer to water per 1000 units, based on the water and fertilizer volumes you enter.