Chambers, Jeanne C. 1989. Native species establishment on an oil drill pad site in the Uintah 

 Mountains, Utah: effects of introduced grass density and fertilizer. Res. Pap. INT-402. 

 Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research 



Station. 9 p. 



This study examined the effects of introduced grass seeding density and fertilizer on native 

 species establishment on an oil drill pad site in the Uintah Mountains, UT. Differences in 

 first-year seedling density and 3-year standing crop biomass among treatments were evalu- 

 ated for seeded introduced grasses and native species and for unseeded colonizers. Aerial 

 cover was measured all 3 years and the effects of fertilization on soil N0 3 — N, available P, 

 and exchangeable K were examined 2 years after application. Recommendations for recla- 

 mation of similar sites are given. 



KEYWORDS: reclamation, revegetation, fertilization, seeding density, introduced grasses 



INTERMOUNTAIN RESEARCH STATION 



The Intermountain Research Station provides scientific knowledge and technol- 

 ogy to improve management, protection, and use of the forests and rangelands of 

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Several Station units conduct research in additional western States, or have 

 missions that are national or international in scope. 



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 age, religion, or handicapping condition. Any person who believes he or she has 

 been discriminated against in any USDA-related activity should immediately con- 

 tact the Secretary of Agriculture, Washington, DC 20250. 



