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. 2015 Jan 28;15(2):2920–2943. doi: 10.3390/s150202920

Table 5.

Sensor model ranking based on Error, Consistency, and Mean Agreement Score (ECMA) MPE (0.19), Standard Deviation of MPE (0.36) and R2 (0.87) for measured were calculated from paired bermudagrass plots. MIX-Mixture of alfalfa and bermudagrass.

Forage Type Measure/Estimation Method Mean Mean-Percent Error (MPE ) Standard Deviation MPE R2-Measured to Estimated ECMA Score

DM (t ha1)
Alfalfa Measured DM 2.36
Alfalfa 1 2.16 0.31 0.27 0.69 0.150
Alfalfa 5 3.02 0.30 0.24 0.63 0.083
Alfalfa 3 2.36 0.40 0.35 0.68 0.019
Alfalfa 7 2.16 0.53 0.67 0.13 0.005
Alfalfa 6 3.02 0.68 0.53 0.63 0.002

Bermudagrass Measured DM 3.33 0.19 0.36 0.87
Bermudagrass 3 3.41 0.32 0.57 0.85 0.069
Bermudagrass 1 3.45 0.36 0.6 0.81 0.033
Bermudagrass 6 3.54 0.36 0.55 0.82 0.022
Bermudagrass 5 3.98 0.47 0.65 0.82 0.005
Bermudagrass 7 1.9 0.63 0.69 0.25 <0.000

MIX Measured DM 2.15
MIX 1 1.83 0.30 0.26 0.79 0.035
MIX 3 2.37 0.40 0.52 0.78 0.019
MIX 6 2.76 0.68 0.79 0.55 0.002
MIX 7 1.66 0.48 0.58 0.17 0.001
MIX 5 3.1 0.85 0.91 0.55 0.001

Wheat Measured DM 2.47
Wheat 1 2.74 0.41 0.65 0.81 0.013
Wheat 3 3.18 0.63 0.94 0.80 0.002

Canopy height (cm)

Alfalfa Measured height 30.8
Alfalfa 9 22.5 0.30 0.17 0.61 0.04
Alfalfa 8 21.0 0.33 0.18 0.59 0.03

Bermudagrass Measured height 36.1
Bermudagrass 8 29.0 0.21 0.12 0.79 4.05
Bermudagrass 9 26.0 0.28 0.13 0.84 2.29

MIX Measured height 28.2
MIX 9 18.5 0.35 0.19 0.57 0.88
MIX 8 7.2 0.77 0.17 0.59 0.21