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Say Goodbye to the High
N Reference Strip
Holland Scientific is pleased to introduce a new method for
performing in-season N application. The Holland Scientific
method no longer utilizes the high N reference strip concept
that older VRT technologies implement. Our method allows our
crop sensors to “auto calibrate” to crop growing conditions.
The result of this real-time calibration is what we call the
Virtual Reference StripTM (VRS). VRS technology is not limited
only to fertilizer application and can be utilized with almost
any type of agrochemical that can be applied using a sensor-based
response.
Problems with the
High N Reference Strip Method
In the past, a producer would have to carefully select a “representative”
portion of a field to establish a high N reference strip. Once
the high N strip location was determined, the producer would
typically apply a maximum N rate to this location at planting
to insure that plants growing the reference strip would not
be nutrient limited. During the growing season, the producer
using a VRA sprayer would search out the high N reference strip
in his field, scan the reference strip with his sensor system
in order to calibrate his sensors, and then begin applying
fertilizer to the field.
In principle this sounds rather straight forward however,
there are many problems associated with utilizing a high N
reference strip (or high N reference area) as an in-season
calibration standard for on-the-go, real-time crop sensors.
These problems include (but not limited to):
- Requires producer farming practice change
- Difficult to locate reference strip in field
- May require multiple reference strips per field
- Season-to-season reference strip management hassles
- High management overhead and additional production
cost
- Reference strip influenced by soil spatial variability
- Limited to only nutrient application
The new VRS method developed by Holland Scientific has eliminated
the extra overhead required by a producer desiring to use sensor-based
VRT. No more year-to-year reference strip management
hassles, no more calibration hassles and no more reference
strip variability hassles. Just drive and apply.
Features
- Real-time agrochemical application -- equation or table-based
- Real-time sensor georeferencing
- Supports single or multi sensor networks (1 to 8 sensors)
- Simple one-button logging
- User definable vehicle speed threshold for conditional
datalogging/application control
- Data storage up to 1 Gigabyte on a standard SD Flash card
- Supports 1Hz or 5Hz GPS sensors
- Data recorded using standard Comma-Separated-Variable (CSV)
file format
Supports the following
rate controllers:
- Bogballe
- Kverneland
- Agro LH 5000
- Raven Industries 400, 600 and 700 series
- Rawson AccuRate
- Holland Scientific VC-110
Example Maps (Wheat UK)
: Crop Biomass / As Applied
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