Yara N-Sensor V3.10 Operation Manual
5.3 Target rate application
The Target rate application operation mode is very similar to the N-application operation
mode (see section
5.2). The mode has been designed to apply a predefined target rate
on the field, i. e. to locally redistribute a predefined rate according to the N-Sensor
readings. If used properly, the average application rate on the whole field will be ap-
proximately equal to the target rate.
In contrast to the standard N-application mode a separate in-field calibration is not re-
quired. Instead, the system automatically calibrates itself when the first tramlines are
fertilized. This may lead to some inaccuracy at the very beginning when only a few
datasets have been acquired. However, the accuracy will continuously improve the
more area has been covered.
5.3.1 Agronomic calibration
To enter the agronomic calibration menu, press the Agronomic Calibration. button on
the main menu bar. Usually, this menu is entered at the beginning of the field after a
task has been selected (section
4).
The menu itself consist of three pages that can be navigated using the Up and Down
button:
Crop: Select the crop type to be fertilized by successively pressing the Crop button un-
til the desired crop type is displayed.
Growth stage: Select the current growth stage of the crop to be fertilized. The growth
stage is entered as decimal code (EC) between 0 and 99.
N content in fertilizer: This number is used as conversion factor between nitrogen
rates and product rates. In target rate application operation mode, all rates within
the N-Sensor program are in nitrogen units, but the application device requires
product rates.
Last revised: 28.01.2009 14:39 Page 40 of 64
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