Near Intersection of I-35 & I-90 Southern Mn. | We use Ag Leader displays and legacy modules several ways. We use a Liquid Product Control Module for rate and section control on our Hagie STS-12. We use another Liquid Product Control Module for rate and section control for applying Pre's with our Deere Corn/Soybean Planter.
We use Ag Leader's Clutch Control Module with Ag Leader's Sure Vacs on our Deere Vac 1770NT.
We have been happy with the turn ON and turn OFF times/locations for our planting and spraying situations.
Here are a few things to keep in mind concerning the map depiction of the application and the actual effective application. The map is NOT an absolute representation of when the seeds hit the ground with the planter or when spray hits the ground with the spray situations. The map depiction is based on when the system starts to open the spray valves or reengage the seed clutches.
The strong recommendation for checking the clutch timing with the planter is to "always dig" for the seed to see if it is starting/stopping at the desired point.
With many systems there is a certain amount of "delay" involved. With our SureVacs for example, there is a considerable delay in starting planting since the plunger has blocked off the vacuum which causes the seeds on top of the seed disk to fall back into the seed pool. When planting resumes, the system must "lead" the intended starting point in order for the seed cells to get refilled and start dropping seed at the intended location. To facilitate this, Ag Leader provides a chart that gives a fudge factor that one should use. This fudge factor suggests a value to subtract from the actual hitch distance between the planter and the tractor. This means the system thinks the planter is closer to the tractor than it really is so, it engages earlier. This in effect "fools" the system into retracting the plunger earlier so the seed arrives at the intended time and location. This fudge factor is related to population and ground speed. This has worked well for us.
With a sprayer the need to lead the application point based on time may not be as great but it can still be involved. There is a bit of time involved from when the valve starts to open and spray actually reaches the ground. Higher ground speeds would tend to make this situation worse.
Certain spray valves are a bit slow in turning ON which would require a bit more lead time.
As far as a increasing the START lead time, I have no explanation as to why the map would seem to show a wider gap but yet the valves open earlier. As others have suggested I would check the GPS offsets carefully in your setup as this affects the turn ON and turn OFF situation greatly.
I'm assuming your Hagie has your Boom Upfront so the question about the boom location versus the reference point needs to correctly indicate that measurement and the fact that the boom is forward rather than backward of the reference point like a pull-type sprayer. |
Ag Leader issue
