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. - <br />~ UNITED STATES DEPARTMENT OF AGRICULTURE <br />Soil Conservation Service <br />'-J Colorado <br />S'fANDARUS AND SPECLFICA'fION <br />i' <br />Stand:,rd <br />Definition <br />MULCHING - 484 <br />(Acre) <br />Applying plant residues or other <br />materials not produced on [he site to <br />the soil surface. <br />Purpose <br />To conserve moisture; prevent surface <br />~umpaction or crusting; reduce runoff <br />and erosion; control insects; and help <br />establish plant cover, <br />,. Conditions where practice applies <br />~.' Un soil:: subject to erosion on which <br />low-residue-producing crops, such as <br />.,rapes and small fruits aru grown; un <br />critical areas; and uu soils [hn[ have <br />., low infiltration rate. <br />Specifications <br />A. General <br />I. Tlie area shall be relatively <br />smooth and free of gullies or drifts <br />2. Mulching material shall he <br />applied i~nmediatcly before or after <br />seeding unless seed is applied with <br />the mulch. When stabilizing sandy <br />• soils it is rrcummended that seedint; <br />will be done after mulch.application <br />to proven[ seeding too deep. F'or <br />udditional info nn:,tion refer to <br />Agronomy Technical Note 1147 (Rev. I). <br />Technical Guide <br />Section IV <br />All Field Offices <br />February 1982 <br />8. Straw or Hay Mulcli <br />1. The material will be grass <br />hay or cc real grain straw (both <br />referred [o as straw in these <br />specifications). <br />2. '1'he normal rate of appli- <br />cation shall be 4,000 lbs/ac. of <br />air-dry material spread uniCurmly <br />over tl,e area. <br />3. At least 50% of the mulch <br />by weigf,t shall be 10 inches or <br />more Ln length. <br />4. The straw will he free of <br />noxious weeds. <br />5. One of the Eollowing <br />methods of anchoring the straw <br />mulch wt1L be used: <br />a. Manufactured mulch <br />netting: Plulch netting will be <br />pulled hand tight over straw. <br />Plulcli netting will be held firmly <br />in place by metal pi,is commer- <br />cially available from mulch net <br />manuf:,cturers for this purpose. <br />They are usually made of 8 P,uage <br />wire and are 6-8 inches Long. Pin <br />spacing will be in accordance e+ith <br />the manufacturer's instructions. <br />If tl,c soil is sandy or otherwise <br />loose, use longer pins a„d wooden <br />stakes to firmly secure [he <br />netting. <br /> <br />T(:N /1182 2/82 <br />