> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/introduction-1/landuse-and-management/management.sch/op_data1.md).

# op\_data1

| Operation | Use of variable                                                                                                                    |
| --------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| pcom      | ???                                                                                                                                |
| plnt      | Plant in the plant community to be planted                                                                                         |
| harv      | Plant in the plant community ([plant.ini](/io-docs/introduction-1/landuse-and-management/plant.ini.md)) to be harvested            |
| hvkl      | Plant in the plant community ([plant.ini](/io-docs/introduction-1/landuse-and-management/plant.ini.md)) to be harvested and killed |
| kill      | Plant in the plant community ([plant.ini](/io-docs/introduction-1/landuse-and-management/plant.ini.md)) to be killed               |
| mons      | ???                                                                                                                                |
| till      | Name of tillage type in [tillage.til](/io-docs/introduction-1/databases/tillage.til.md) database                                   |
| irrm      | Name of irrigation operation in [irr.ops](/io-docs/introduction-1/management-practices/irr.ops.md) file                            |
| irra      | Name of irrigation operation in [irr.ops](/io-docs/introduction-1/management-practices/irr.ops.md) file                            |
| fert      | Name of fertilizer in [fertilizer.frt](/io-docs/introduction-1/databases/fertilizer.frt.md) database                               |
| frta      | Name of fertilizer in [fertilizer.frt](/io-docs/introduction-1/databases/fertilizer.frt.md) database                               |
| frtc      | Name of fertilizer in [fertilizer.frt](/io-docs/introduction-1/databases/fertilizer.frt.md) database                               |
| pest      | Name of pesticide in [pesticide.pes](/io-docs/introduction-1/databases/pesticide.pes.md) database                                  |
| pstc      | Name of pesticide in [pesticide.pes](/io-docs/introduction-1/databases/pesticide.pes.md) database                                  |
| graz      | ???                                                                                                                                |
| burn      | ???                                                                                                                                |
| swep      | ???                                                                                                                                |
| prtp      | ???                                                                                                                                |
| skip      | not used                                                                                                                           |