Possible benefits from sub-tropical grasses

1.     Production
As with the temperate grasses with limited salinity tolerance, these sub-tropical species are included in shotgun mixtures primarily because they produce useful forage for grazing animals. If sown as part of a shotgun mixture with more salt- tolerant species, these sub-tropical grasses with low salinity tolerance will occupy the least saline areas with no to low waterlogging (Rhodes grass) or moderate to high waterlogging (kikuyu). This can be positive for the saline site as a whole, but can significantly complicate management.

2.     Conservation and amenity
Visual amenity and landscape protection (erosion control) will be improved, but such low-salinity sites will only be bare or scalded if overgrazed. Pasture production is the primary motive for using these sub-tropical pasture grasses to rehabilitate saltland.

Any system that controls the grazing pressure will quickly lead to revegetation of such sites.

3.     $$’s
There have been no documented studies of the economic outcomes from including sub-tropical grasses in saltland pasture mixtures. The general economic conclusion would be that if sub-tropical pastures are seen as economic in your district, and if your saltland patch is not highly saline or waterlogged, then the inclusion of sub-tropical grasses in a mix will give positive results.

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