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01i23i89 12:45 <br />• <br />342-i: Critical Area Planting <br />Fertilizer requirements <br />~ 303 490 1063 COLORADO LIEN CO ~ 11 <br />• <br />1. A11 critical wren plnntinga eltall he fcrtilired unless Field evidence or <br />a laboratory soil annlysia indicates sufficient attwuntn of nitrogmt and <br />phosphorus ore present for eslabliuhment of vegetation. <br />2. '1'Itc rote of icrtil.izot: appiirution shall bo tto less than 40 pounds of <br />nitrogen (N) and 40 pounds of phnsphnto (1205) per acre. Animal manures <br />or t;tntilnr orP,att.l.c material may be used to supply nil or part of the <br />aper.ified nutrients. <br />3. Time oI application sltoll be immediately prior to seeding, at the time of <br />seeding, or i.mmadiately following seeding, art applicable to ttte kind oI <br />f.rrtillzrr and type of equipment used. <br />Secdbcd.prepnration <br />~1'I,e_secd}ted slt:tl..l he well settled sod firm, bur Friab]c ennuF,lt that seed can be <br />l,laccd at tiro scrding cieptlts specified in "Ocptlt of. seeding." The seedbed shall <br />be reasonab]y free of weeds, Competitive stands of weeds that are present before <br />seeding must he r.untrolled by shallow Cillage or by npltlicatioti of hecbicidea <br />labeled for tl~ls purpose. <br />Soils that have been over-r.ompacted by traffic or equipment, enpociolly when wet, <br />st~uu7d he tiJ.led to break ttp rooting restrictive layers, acid then harrowed, rolled <br />or parked to prepare the required firm seedbed. <br />Metltadt; of seed'inl{ <br />1. f;oed sltnuld be planted with a drill. on all elopes of 33 percent (3:1) or. <br />f:luttct. 'I'hn drill uwsf have the capability of handllug the kind and rote <br />ctC aced beittF planted. <br />2. fiord may be broadcast lty ltattd, ny mechanical spreader, or by hydraulic <br />equipment on areas chat ore small, too steep, or not accessible Inr. seed-drill <br />upcr:,tinnr,. '1'ltis specification docE~ not provide fur Itydr.aulic application of <br />teed and mulch iu a aingl.c operation. <br />l~tb of sseding <br />1. Seed planted taitlt a dri].1 shall be covered with soil to adepth of 1/4 to <br />3/4 1nr..lt. ' <br />-'-' 2. Seed planted by tits broadcast tnetltod eltal.l ba incorporated ictto the surface <br />soil, out to exceed a Jepth of 3/4 inch, by raking, harrowing ur other proven <br />method. <br />3. Indian ricegrass may be seeded to a depth of 2 incites on sandy loam and loamy <br />sand soils: <br />uSnn/SCS/COI.UUADU 7/81 ]'t:N II17U <br />