| These remote sensing technologies can also be used to distinguish GM from non-GM crops, and trace genetic pollution. |
| As remote sensing relies heavily on interpretation skills, local experts may help with the interpretation. |
| A chlorophyll meter or remote sensing information also can be used to help determine the need for nitrogen. |
| Active ground-based remote sensing uses pulsed electromagnetic radiation sources such as lasers and radars to probe atmospheric structure. |
| They use passive remote sensing instruments to detect sunlight reflected by mounds and mark areas infested by imported fire ants. |
| A more advanced level could include compaction mapping, remote sensing, and field scouting. |
