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SEP 19 2002 1:31 PM HP LRSERJET 3200 P.3 <br /> <br />SHRUBS/HALF <br />SHRUBS <br />Silver Sagebroeh N 850,000 0.06 51,OOD 1.2 <br />Artrmiria wsa <br />Fxinged Sagebrush <br />,qrh, N 4,100,000 0.03 135,000 3.1 <br />Mtn. Big Sagebrush <br />.9rtrrairia nidan7aTa var ono N 2,500,000 OA6 150,000 3.4 <br />Rubber Rabbidatueb <br />Cb ~rarbasrrwr saureour N 335,000 0.25 83,750 1.9 <br />Antelope Bitterbrvah <br />Pxirhio rrrdentata N 15,000 0.75 11,750 _ _ .26 <br />Total Shrubs/Half Shrubs 1.15 9.86 <br />Total Mixture 6.63 30.91 <br />N=Native, I=Introduced <br />2.8 IRRtOAT10N AND FERTiLt2AT10N (CONY) <br />Dr. Ed Redente at Coiotado State University and Dr, Teuy McLendon at the Univusity of Texas at <br />El Paso have conducted ixaearch in Colorado, Utah, Wyoaung, Texas, and New Mezico on limiting <br />nitrogen to assist in accelerating secondary native plant succession and xecavery•, Their work has <br />• shown that if native plant establishment and the reduction of weeds is tilt goal then available soil <br />nitrogen must be limited in the soil. Their recommencation for establishing move plants frown <br />shrubs w amasses to grasses to foxbs is to Eotgo the application of suppleanrntal nitrogen, and is cases <br />where weed are a major or potential problem, tie-up the available soil nitrogen with as available <br />carbon source such as sugar. <br />OMLLC, tbuefoxe, dots not propose any addition of arpplemental nitrogen. Soil Fertility analysis <br />may call for the addition of supplemental phosphorus. If supplemental phosphorus is called for <br />OMLLC will apply 50 to 75 Ibs per acre of phosphorus fertilizer ;PxO,) to be incorporated to a depth <br />of 1-3 inches by mechanir.at means. This incorporation of the phosphate is the upper 3 inches of the <br />plant gxowrh medium will assist with the esrablishmcnt and the pxowth of the gemtinadng spades <br />during the critical early seedling devtlopment phases. There map be site-specific conditions (axecp <br />slope areas for ezample) where the application ut phosphorus may not be practical ox possible for <br />safety, rocky or other sine-specific rcasoas. <br />2.7 CONTROL OF WEEDS <br />This wced control plan is concurred with the control of a wide variety of noxious weeds, thistles, etc <br />located on mine disturbance areas. Weed control vinll primarily be accomplished'ry the application of <br />hubiades approved For use is Colorado. The selecdoa of chemicals will depend both on tits weed <br />species of concern and the ncoauaendations of weed control pxoEeseioaals. Sources for weed <br />eoatxol information irtchuie Colorado State University sad local County representatives. Spraying will <br />be accomplished by the use. of portable hubicide application systetas in accordance with the <br />manufacturer's Labels. Other mechanical or biological means of weed wa~ol each as dieting, <br />shoveling sad insects may also be anplayed to wntrol weeds on disturbed areas. <br />'. The herbicides will not be applied when spray parddes may be carried by sit currents to areas where <br />desirable plants ate Bowing. All tnanufacturct's label xecotntnendadons will be followeel OMLLC <br />will keep on Erie, for inspection by the Division, resnrds of its weed control activities. The weed <br />control records will document the location where weed oontcol was performed, the type of weed <br />TR-40 H-6 Revised September 2002 <br />