Mapping winegrape quality attributes using portable fluorescence ...

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Table 3. Summary statistics for selected Multiplex signals and indices and other plot attributes. Modelparameters fitted to experimental variograms used for krigging of maps presented in Figures 4 to 6.Model Descriptive statistics Variogram parameters RangeMean 1 Range 2 CV SpreadNugget(%) (%) 3 Still Scale Nugget(%)(m)YF_UV Exp 51 24 12 47 57 57 0 0 38RF_UV Exp 33 39 26 118 110 100 10 9 20FRF_UV Exp 36 42 25 121 100 100 0 0 13YF_B Exp 212 34 3 16 54 54 0 0 5RF_B Exp 123 127 21 104 880 680 200 23 13FRF_B Exp 127 131 21 108 880 680 200 23 13YF_G Exp 3825 602 3 16 26500 21500 5000 19 16RF_G Exp 9 11 28 122 8 7 1 13 12FRF_G Exp 15 16 23 106 14 12 2 14 10RF_R Exp 118 143 23 124 760 760 0 0 7FRF_R Exp 168 230 26 144 1840 1840 0 0 7SFR_G Exp 2.07 1.35 17 68 0.175 0.16 0.015 9 12SFR_R Exp 1.43 0.41 5 29 0.0039 0.0016 0.0023 59 4BRR Exp 1.64 1.4 16 87 0.066 0.047 0.019 29 7FER_RUV Exp 4.91 2.91 13 61 0.44 0.44 0 0 5FLAV Exp 0.67 0.24 8 37 0.0032 0.0026 0.0006 19 8FER_RG Exp 12.66 8.83 13 72 2.85 2.85 0 0 6ANTH Exp 0.49 0.24 10 51 0.0025 0.0023 0.0002 8 7NBI_G Exp 5.6 5.72 21 106 1.75 1.15 0.6 34 8FERARI Sph 1.52 0.5 7 33 0.0115 0.009 0.0025 22 24Clusters/vine Sph 6.29 6 17 95 0.98 0.48 0.5 51 10Cluster mass (g) no 191 164 15 85 - - - - -Yield (kg/vine) no 1.2 1.41 20 115 - - - - -Berry mass (g) no 1.8 0.44 5 24 - - - - -Anth (g/L) Exp 1.59 0.69 8 43 0.017 0.0135 0.0035 21 6Total phenolics Sph 7.22 3.312 8 45 0.36 0.25 0.11 31 12 13 C Exp -25.41 2.31 2 9 0.365 0.365 0 0 9Sugar (g/L) Sph 242 78 5 32 137 40 97 71 26NDVI Sph 0.67 0.48 13 70 0.0076 0.0014 0.0061 80 181 All signals are in mV.2 Range is derfined as maximum - minimum value.3 Spread is defined as the range devided by the median, expresssed as a percentage (Bramley, 2005).Exp = Exponential, Sph = Spherical, no = no spatial structure.12
Figure 1. Plot characteristics and position of sampled vines (left). Circles indicate theposition of sampled vines and the crosses the center of each of the 96 sampling blocks.Apparent electrical resistivity of the soil (measured in 2003) is overlaid on the relativeelevation wireframe map (right, top). Clay proportion at the depth of 0.5 and 1 m isshown bellow.A) B) C)Figure 2. The Multiplex sensor. A) Measurement in the field. B) Top view of the sensorshowing the touch-screen interface and triggering button. C) Front view of the optical headwith LED sources (6 UV & 3 RGB) and three detectors in the middle (YF, FRF, RF). Fornomenclature see Table 1.Figure 3. Example of variograms for the grape yield, a fluorescence signal (FRF_R), and afluorescence-ratio Multiplex index (ANTH).13
Page 7 and 8: to constant-distance measurements,
Page 9 and 10: Literature CitedAdams, D.O., 2006.
Page 11: Meyer, S., Cerovic, Z.G., Goulas, Y
Page 15 and 16: Figure 5. Maps of the twelve fluore

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