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Petersen, J.L., D.N. Ueckert and R.L. Potter. 1986. Cultural practices <br />for establishing fourwing saltbush within perennial grass stands. • <br />Journal of Range Management 39:460-463. <br />Tree Planting in the Inland Northwest. Proceedings of a short course <br />held at Washington State University, Pullman, 17-19 February 1976. <br />Editors: David M. Baumgartner and Raymond J. Boyd. Washington <br />State University Cooperative Extension Service. <br />Shrub Establishment on Disturbed Arid and Semi-Arid Lands. 1981. <br />Proceedings of the symposium held at Laramie, Wyoming, December <br />2-3, 1980. Technical coordinators: L.H. Stelter, E.J. DePuit, and <br />S.A. Mikol. Wyoming Game and Fish Department. 154 pp. <br />U.S. Congress, Office of Technology Assessment, Western Surface Kline <br />Permitting and Reclamation, OTA-E-279 (Washington, D.C.: U.S. <br />Government Printing Office, June, 1986). 296 pp. <br />Crouch, G.L. 1979. Atrazine improves survival and growth of ponderosa <br />pine threatened by vegetative competition and pocket gophers. <br />Forest Science 25:99-111. <br />Larson, M.M. and G.H. Schubert. 1969. Root competition between <br />ponderosa pine seedlings and grass. USDA Forest Service Research <br />Paper Rh1-54. <br /> Based on review of the above literature and "Measures to be Implemented" • <br /> as outlined in PCC's response to Comment 9 of the PAR, a small study <br /> plot has been established on reclaimed lands in the Wadge East Pit area <br /> of the Seneca Mine (see Shrub Establishment Study Plot, Attachment 1 to <br /> this comment). The eastern half of this plot was not seeded with a <br /> cover crop or the permanent seed mix in order to measure the benefits of <br /> reduced herbaceous competition related to increased establishment and <br /> growth of shrub seedlings. In addition, the southern half of the study <br /> plot was cross ripped and the topsoil deep disked, to reduce or <br /> eliminate any compaction problems. The ripped portion of the plot will <br /> measure any benefits to shrub establishment and growth as related to <br /> improvements in effective rooting depth and improvements in soil <br /> physical qualities related to reduction in compaction. The study plot <br /> general design is shown as Attachment 2 to this comment. The entire <br /> study plot totals slightly less than two acres and the nonseeded portion <br /> covers just under one acre. Shrub species planted were 500 Gambel oak <br /> (Quercus gambelii), 500 Saskatoon serviceberry (Amelanchier alnifolia), <br /> and 500 chokecherry (Prunus virginiana). Because of plot size • <br /> restrictions, only 1,344 shrubs were placed in the plot; the <br />3tl <br />