Comparing Corn Variety Yields in Center Pivot Irrigated Fields
Koehn Farm – SW Kansas,
2008 John Deere 9570
Corn, Milo, Wheat
Comparing Crop Varieties in Circular Fields with FarmTRX
Milton Koehn farms is in an area of southwest Kansas where many farmers use center pivots to irrigate their corn fields while planting drought resistant crops in the corners. “This is common practice in these parts but was new to the FarmTRX guys” says Koehn. The FarmTRX system was originally devised for western Canada where this type of irrigation is not common. “They were willing to spend the time and work with me to figure out how to create yield maps for circular fields with different crops at the corners”, said Koehn. He bought the FarmTRX yield monitor for his 2008 John Deere 9570 because it was the right price and it seemed like it would be simple and effective for his 800 acres.
Koehn, like many other corn farmers with center pivot irrigation, plants different varieties in his fields along with different crops in the corners, like milo. “We were pretty confident that the circular harvesting pattern wouldn’t make a difference to the way our system automatically generates yield maps”, said Mark Hammer – FarmTRX VP Sales and Business Development. An unforeseen bonus was the ability to map the corners as a separate field and export them quickly and easily for crop insurance submission. It turns out that farmers can spend a lot of time and effort doing this manually.
Corn Variety Mapping Solution:
Koehn wanted to learn what could be done to assess different variety types in one of his center pivot corn fields. SW20 was planted with three different varieties in the center, middle and outer sections of the field. “When Milton was deciding on buying our yield monitor we discussed post-harvest calibration. He knew which rows were which variety, so he had independent weigh tickets for each variety tabulated”, recalls Hammer. Koehn knew where to draw the three sub-field boundaries for each variety and provided the total for each sub-field in bushels to calibrate each variety trial independently.
The FarmTRX Internet of Things (IOT) approach makes cost-effective yield mapping a reality with older equipment. Post-processing of raw yield data after harvest allows users to define and calibrate sub-fields for trials and/or varieties when they have more time. It has a demonstrated ability to catch errors and correct mistakes easily and automatically. And, thanks to Milton, we now know that it works well in both circular fields and the corners too!