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~~ <br />UNITED STATES DEPARTMENT' OF AGRICULTURE <br />Soil Conservation Se rVil'~ <br />Colorado <br />STANDARDS AND SPECIFICATION <br />t1ULCIIINC - 484 <br />(Acre) <br /> <br />,~~ <br />Standard <br />Definition <br />Applying plant residues ur other <br />materials not produced on [Ite site to <br />the .soil .surf ace. <br />Purpose <br />To conserve moisture;. prevent surface <br />compaction or crusting; reduce rwtoff <br />and erosion; control insects; and help <br />establish plant cover. <br />Conditions where practice applies <br />On soils subject to erosion on which <br />low-residue-producing ct'ttps, such as <br />grapes and small fruits are grown; on <br />critical areas; and un st~ils that have <br />a low infiltration rate. <br />Technical Guide <br />Section IV <br />All Field Offices <br />February 198? <br />J.i.~ Straw-or~Hay Mulch <br />1. The material will be grass <br />hay or cereal grain straw (both <br />referred to as straw in these <br />specifications). <br />2. The normal rate of appli- <br />cation shall be 4,000 lbs/ac. of <br />air-dry material spread uniformly <br />over [he area. <br />3. At feast 50%'of the-mulch <br />by weight"shall-be 10 inches or <br />taore in length. <br />4. The straw will be free of <br />noxious weeds. <br />5. One of the following <br />methods of anchoring the straw <br />mulch will be used: <br />Specifications <br />A. General . <br />). 1'he area shall b.' relatively <br />smooth and Cree of gu1Li.•s ;tr drifts. <br />?. *fulchiq material sh.tll he <br />applird imm~•.li.trcly hotnr.• ,•r nitor <br />serdi nt; unless s.•r.l is .i ~~plle.l with <br />[he :ntleh. •.:han s[abili:.in;; ,.+ndy <br />soils i.[ is nccnnunandul that ::.•~ding <br />will be dune actor inult:h .y,pli.:atior, <br />to prevent seedin;i ton .I~.~p. 1•'or <br />additional info rmatton rrfer to <br />Agronomy 'Technical Nute "~t1 iRrv. I). <br />a. Manufactured mulch <br />netting:: t4ulch netting will be . <br />pulled hand tight over straw. <br />Mulch netting will be held Firmly <br />in place by metal pins commer- <br />cially available from mulch net <br />mannfar.h;rers for [L•is purpose. <br />They an• usually ma.ic of 9 guagr <br />wise and are 6-g inches Lu~tg. Pin <br />spacing will be in accordam:e wi(h <br />the mannta~:.un•:'ti instru;.i i~tns. <br />li [he soil is sun~~' or otherwise <br />loose, use longer.pins and wooden <br />stakes to Cinnly se :u rte the <br />nett i. ry;. <br /> <br />