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Zhcwmr~~e <br />~.~ awe <br />n~....i~i s . <br />• The third and final recommendation involves continued revegetation efforts and / or remediation of ~ <br />currently reclaimed areas, especially those that are south or west facing. It would be prudent to avoid any <br />~ disturbance of currently revegetated surfaces as such disturbance will stronoly encourage invasion by <br />cheatgrass to the exclusion of most other taxa. In the interest of attempting to increase species diversity <br />of currently revegetated south and west facing areas,interseeding could occur. Suchinterseeding should <br />`~ be heavily weighted toward drought-tolerant shrubs, and should occur by pedestrian means using belt <br />~ ~ mounted /hand operated seed distributors ("whirlygigs"). Mechanical measures will disturb the soil <br />r <br />Q°` surface thereby further encouraging cheatgrass. The 12-acre CRDA # 2 could be interseeded in this <br />~''~p~~ manner in about five manhours. The recommend mix for this interseeding effort should be as follows: <br />i s Lbs !acre Seeds ! Ft' <br />Galleta (fiilaria jamesi~) (warm-season grass) 1.0 3.65 <br />Alkali sacaton (Sporobolus airoides) (warm-season grass) 0.1 4.04 <br />Shadscale (Atrfplex confertifolia) 4.0 5.96 <br />Black greasewood (Sarcobatus vermiculatus) 2.0 9.64 <br />Winterfat (Ceratoides /anata) 2.0 2.60 <br />Prostrate kochia (Kochia prostrata) (cheatgrass competitor) 1.0 9.36 <br />' <br />TOTAL 10.1 35.25 <br />1• <br /> <br />1 <br />1 <br />,Wt,.~ <br />~~+ ~(~cu <br />1 <br />• <br />As indicated on Map 1, significant portons (-21 acres) of both CRDA # 1 and # 2 have yet to be <br />revegetated. Depending on the seed mix used to reclaim these surfaces, diversity of the overall area <br />could be enhanced. Such an enhancement would be similar to the concept of "community diversity". To <br />effect such diversity, the seed mix utilized should contain at least a few different taxa, or different <br />quantities of those taxa already existing in currently revegetatod areas. In this regard, the following seed <br />mix (as modified from the mix used for existing revegetation on CRDA # 1 and # 2) could be used for <br />future revegetation efforts. <br />Species <br />Bluebunch wheatgrass Agropyron spicafum ~ w <br />Thickspike wheatgrass Agropyron dasystachyum ~~"' <br />Slender wheatgrass Agropyron trachycau/um <br />Western wheatgrass Agropyron smithii <br />Russian wildrye E/ymus juncaus <br />Indian ricegrass Oryzopsis hymenoides <br />Bottlebrush squirreltail Sitanion hystrix n.+.~ <br />Needle & Thread Stipa somata <br />Gallefa Hilada%amesii (warm-season grass) <br />Alkall sacaton Sporobolus airoides (warm-season grass) <br />Evening primrose Oenothera hookerii <br />Palmer penstemon Penstemon Palmeri <br />Prostrate kochia Kochia prostrata <br />Shadscale Atriplex conferbtolia <br />Four-wing saltbush Afriplex canescens <br />'81ack greasewood Saroobatus vermicu/atus <br />TOTAL <br />s /acre Seeds / Ft2 <br />2.0 5.372 <br />2.0 7.071 <br />1.0 3.650 <br />1.0 2.525 <br />1.0 4.017 <br />2.0 6.474 <br />0.5 2.204 <br />1.0 2.640 <br />2.0 7.300 <br />0.2 8.072 <br />0.25 7.461 <br />0.25 3.500 <br />0.5 4.680 <br />3.0 4.570 <br />0.5 0.597 <br />1.0 4.821 <br />20.2 77.584 <br />Page 10 <br />1 <br />