| Abbreviation | Definition |
|---|---|
| SOS | Set Out Seedlings |
| SOSC | SOlidago shortii Solar Cascade |
| SP | Soil Properties |
| SPAC | Soil Plant Atmosphere Continuum |
| SPAC | Soil-plant-air consortium |
| SPAV | Strawberry Pallidosis Associated Virus |
| SPF | Spruce Pine Fir |
| SPI | Soy Protein Isolate |
| SPNHC | The Society For The Preservation of Natural History Collection |
| Spp | Species |
| SS | Symbiotic Spectrum |
| SSLB | Septoria Speckled Leaf Blotch |
| SSP | Species Survival Plan |
| SSSAJ | Soil Science Society of America Journal |
| ST | Spore Trap |
| STAT | Send The Apple Tissue |
| STD | Stop, Treat, and Destroy |
| STLM | Spotted Tentiform LeafMiner |
| SUNFL | Sunflower |
| SVCP | Sahtu Vegetation Classification Project |