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Remote Sensing of Winter Wheat Tiller Density for Early Nitrogen Application Decisions

^a Dep. of Crop Sci., North Carolina State Univ., Box 7620, Raleigh, NC 27695-7620
^b Dep. of Crop Sci., North Carolina State Univ., Vernon James Res. and Ext. Cent., 207 Research Rd., Plymouth, NC 27962

View larger version (23K): [in a new window]   Fig. 1. Near-infrared (NIR) digital counts vs. tiller density for four site-years.

View larger version (25K): [in a new window]   Fig. 2. Relative digital counts vs. relative tiller density with 95% confidence intervals for four site-years.

View larger version (28K): [in a new window]   Fig. 3. Predicted tiller density vs. measured tiller density, indicating the percentage of correct and incorrect N application recommendations based on a critical threshold of 540 tillers m-2.