Chapter 4 – CropSpec Operation
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l Maximum Rate: The maximum rate of the active ingredient that
should be applied relative to the amount of biomass detected.
Note: To set the rate based on the desired amount of total product
(as opposed to active ingredient), set the concentration to 100%.
l Cutoff: The CropSpec value at which the applicator will stop
applying product. When the CropSpec value is equal to or less than
this value, the application rate drops to zero.
l Fallback Rate: The application rate that the software should default
to if unable to obtain a valid reading from either sensor. This can
happen if no biomass is detected.
l Rate Step: The rate step defines the amount of application rate
change that should be applied as the CropSpec value increases or
decreases. The values entered for minimum and maximum rate are
rounded up or down to the nearest multiple of the value entered for
Rate Step, effectively changing the minimum and maximum rate.
To prevent this, the value entered here should be a multiple of the
minimum and maximum rate values.
l Crop Sense A: The average CropSpec reading of the poor biomass
from a field. It is collected by driving through the part of the field
where crop health is poor.
l Rate A: The application rate when the CropSpec reading matches
the value of Crop Sense A.
l Crop Sense B: The average CropSpec reading of the good biomass
from a field. It is collected by driving through the part of the field
where crop health is good.
l Rate B: The application rate when the CropSpec reading matches
the value of Crop Sense B.
4.3.4. Configuring One Point plus Slope prescription
To configure One Point plus Slope prescription type, you need to
determine the average CropSpec reading for the field (this figure is
entered into Crop Sense A). To collect the reading, drive through the
part of the field that represents the best average sample for the entire
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