## 5 Concluding Remarks
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Reference** & **Technology/Sensor** &
\begin{tabular}{c} **General** \\ **Application** \\ \end{tabular} & **Specific Application** & **Sensor Type** & **Country/Region** \\ \hline
[96] & GNSS & Animal monitoring & Not applicable & Satellite & Australia \\
[91] & Remote sensing & Crops & \begin{tabular}{c} Fertilizer and fungicide \\ application \\ \end{tabular} & \
\begin{tabular}{c} Portable and \\ Satellite \\ Not applicable \\ Not applicable \\ \end{tabular} &
\begin{tabular}{c} USA \\ Review \\ \end{tabular} \\
[99] & RTK in GNSS & Crops & \begin{tabular}{c} Altimetry \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} Brazil \\ Argentina \\ \end{tabular} \\
[116] & Remote sensing & Crops & \begin{tabular}{c} Operation crop weed \\ control \\ \end{tabular} & \
\begin{tabular}{c} Satellite and \\ mobile \\ Not applicable \\ \end{tabular} &
\begin{tabular}{c} Italy \\ Review \\ \end{tabular} \\
[95] & General sensors & Forage crops & Biomass production & Not applicable &
\begin{tabular}{c} Review \\ \end{tabular} \\
[95] & Total FOIF® & Forests & \begin{tabular}{c} Altimetry \\ \end{tabular} & \
\begin{tabular}{c} Satellite \\ \end{tabular} &
\begin{tabular}{c} Brazil \\ \end{tabular} \\
[100] & GNSS & Forests & \begin{tabular}{c} Altimetry \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} Norway \\ \end{tabular} \\
[128] & Portable NIRS and & \begin{tabular}{c} Meat \\ benchtop NIRS \\ \end{tabular} & \begin{tabular}{c} Meat \\ \end{tabular} & \begin{tabular}{c} Meat Quality \\ \end{tabular} & \
\begin{tabular}{c} Fixed and portable \\ \end{tabular} &
\begin{tabular}{c} Italy \\ \end{tabular} \\
[101] & NRTK & Olive grove & \begin{tabular}{c} Altimetry \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} Spain \\ \end{tabular} \\
[56] & Spectroradiometer & Pasture & \begin{tabular}{c} DCAD, lignin, lipid, ME, \\ OMD \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} New Zealand \\ \end{tabular} \\
[7] & Multispectral & \begin{tabular}{c} Pasture \\ \end{tabular} & \begin{tabular}{c} DCAD, lignin, lipids, ME, \\ OMD \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} New Zealand \\ \end{tabular} \\
[57] & Ultrasonic and & \begin{tabular}{c} Spectral Sensor \\ \end{tabular} & \begin{tabular}{c} Pasture \\ \end{tabular} & \begin{tabular}{c} Biomass production \\ \end{tabular} & \
\begin{tabular}{c} Portable and \\ satellite \\ \end{tabular} &
\begin{tabular}{c} Review \\ \end{tabular} \\
[89] & PA general & Pasture & \begin{tabular}{c} Photectivity and quality \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} Portugal (Alentejo) \\ \end{tabular} \\
[92] & Grassmaster II & Pasture & \begin{tabular}{c} Biomass production \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} Portugal (Alentejo) \\ \end{tabular} \\
[43] & OptRx & Pasture & \begin{tabular}{c} Ash, CP and NDF \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} Portugal (Alentejo) \\ \end{tabular} \\
[121] & Grassmaster II & Pasture & \begin{tabular}{c} Biomass production \\ \end{tabular} & \
\begin{tabular}{c} Portable \\ \end{tabular} &
\begin{tabular}{c} Portugal (Alentejo) \\ \end{tabular} \\
[108] & Infrared camera & Pasture & Temperature & Portable &
\begin{tabular}{c} Portugal (Alentejo) \\ \end{tabular} \\
[107] & \
\begin{tabular}{c} Multispectral \\ proximal sensors \\ and digital \\ cameras \\ \end{tabular} & Pasture &
\begin{tabular}{c} Productivity and quality \\ \end{tabular} & Fixed & Australia \\ \hline \hline \end{tabular}
\end{table} 
Table 1: _Cont._