133-3 Improvement of Corn Yield and Sensor Reading Relationship with Consideration of Crop Height.

Poster Number 1321

See more from this Division: S04 Soil Fertility & Plant Nutrition
See more from this Session: Nutrient Management Using Precision Agriculture and Remote Sensing Technologies
Monday, October 22, 2012
Duke Energy Convention Center, Exhibit Hall AB, Level 1
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David Franzen, Dept. of Soil Science, North Dakota State University, Fargo, ND and Lakesh Sharma, North Dakota State University, Fargo, ND
Poster Presentation
  • Franzen2012poster.pdf (295.5 kB)
  • Corn was grown in a nitrogen rate study with six N rates and four replications. Two active-optical sensors, the Greenseeker (TM) and Holland Crop Circle (TM) were used to collect imagery readings of the plants in each plot at both the 6-leaf stage and again about 2 weeks later. Corn grain was harvested and the grain yield was compared to sensor measurements at each date to construct and algorithm of in-season estimate of yield (INSEY). On the same dates as imagery was collected, a corn height measurement was recorded using a tape measure. Multiplying the sensor reading and the corn height measurement together usually resulted in a stronger relationship with yield and a better INSEY estimate than sensor reading alone.
    See more from this Division: S04 Soil Fertility & Plant Nutrition
    See more from this Session: Nutrient Management Using Precision Agriculture and Remote Sensing Technologies