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- Basal bark spraying <br />• Combinations <br />- Cut stump w/ herbicide application <br />If stockpiling topsoil, use cover crop to aid in preventing undesirable plant establishment <br />(Comment: Although cover cropping topsoil stockpiles in not only a good practice, but is a required <br />practice, I seriously doubt that cover cropping would have much impact on Tamarix/Russian Olive <br />invasion into topsoil stockpiles. Most topsoil stockpiles are pretty droughty and are not favorable habitats <br />for the establishment of Tamarix or Russian Olive. Although Russian Olive seeds will remain viable for <br />some time in the topsoil that is stockpiled, short of sterilizing the topsoil - not recommended - there isn't <br />much that can be done about the seed bank.) <br />Control Methods During Reclamation: <br />Contemporaneous reclamation and quick seeding following topsoil placement <br />Proper soil management <br />• Don't spread soils that arse already infested if adequate clean soil is available <br />(Pre-treatment will help to eliminate contaminated soils.) <br />• Maintain positive drainage <br />Season of reclamation grading and soil replacement, leaching and seed selection: <br />• Avoid April and May and late July (potentially) (Tamarisk flowering and seeding season- <br />Although Tamarisk is a prolific seed producer, seed longevity is relatively short compared to other <br />noxious weeds (3-6 weeks), therefore, if conditions that are conducive and necessary for seedling- <br />establishment (wet or saturated soils) are managed during the flowering and seed producing <br />season, establishment of new plants can be greatly reduced) <br />• Apply topsoil in the fall and seed immediately after application <br />• Use companion crop with seed mix for areas where topsoil must be applied in winter or spring to <br />help ensure desirable plant establishment <br />• [.each salts out of soils with heavy irrigation prior to scedingfplanting, if possible w/o significant <br />erosion/sedimentation <br />(This is suggested for use in areas where thepost-mining land use is agricultural. primarily irrigated <br />crop production) <br />• Revegetate using salt and alkaline tolerant species <br />• Use weed competitive shrubs and trees around wetted soil areas