Neha’s right, and Emily, on a schematic it’s not mounted. I’ve laid out a few of these TI and Silicon Labs radio boards, and the NM parts each have a reason:
Antenna matching (your two caps and the inductor): the match depends on your PCB, enclosure and antenna, so TI leaves a pi network footprint. You build the board, measure with a VNA, and then fit the values that bring the antenna to 50 Ω. Some designs fit a 0 Ω in series and leave the shunt parts empty until tuning.
32 kHz crystal: optional. The chip has an internal RC oscillator that’s good enough for many applications. If your end node sleeps a lot and needs accurate wake timing, fit the crystal; otherwise leave it.
0 Ω and jumper footprints: alternatives, like choosing between two power paths or connecting a debug interface. The reference design keeps both options.
For your soil probes I’d keep every NM footprint on the layout, fit the crystal (sleepy end nodes benefit), and plan one tuning session with a VNA on the final enclosure before you order a batch. In your BOM, mark them DNP so the assembler doesn’t fit anything there.