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<br />• .. be allowed to prevent the possible "oasis" effect created <br /> by newly revegetated areas. If management oP the reclaimed <br />areas is not successful and grazing results in apparent weed <br />invasion, decrease is productivity of the stand, or eaceseive <br />erosion and livestock trails, fences will be replaced until <br />revegetation standards are achieved. <br />II-5.2 Weed Control <br />All disturbed areas will be regularly monitored to <br />determine the need for weed control. This applies to lands <br />with either temporary or permanent vegetative cover as well <br />as road shoulders and other affected areas where cover will <br />be difficult to reestablish. Weeds can reduce the availability <br />of moisture, nutrients, and light for desirable species. <br />Strict monitoring will be implemented for problems <br />arising from the use of herbicides. Records containing the <br />dates and rates of application will be kept. <br />II-6.0 CONCLUSIONS <br />Four vegetation types were delineated on two separate <br />.study areas. Of all types sampled, the big sagebrush type <br />had the highest understory production (637.5 lbs/acre) <br />followed by pinyon-juniper (292.5 lbs/acre}, mountain shrub <br />(257.8 lbs/acre) snd mountain shrub - north facing slope <br />(21t.5 lbs/acre). Understory total cover was highest on the <br /> <br />- 5 7 - <br />