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<br />~~ UNITED STATiS D~PART'.dEtIT OF AGRICULTL~E <br />Soil Conservation Service <br />Colorado <br />STANDARD AND SPECIFICATIONS <br />Mulching.(Code 4B4) <br />Standard <br />Definition <br /> <br />TECfiNICAL GUIDE <br />Section IV <br />December, 1976 <br />Applying plant residues or other suitable aaterials not p~nduced o7 *_he <br />site to *_he soil surface. <br />Pur ose <br />To conserroe moisture; prevent surface compaction or crusting; reduce <br />runofr" and erosion; control xeeds; and help establish plant cover. <br />Where aoolicable <br />On soils subject to erosion on which low-residue-producing crops, such <br />as grapes and small fruits are g=own; on critical areas;. and on soils <br />~- that have a lou infiltration rate. <br />SPECIFICATIONS <br />A. General <br />1. The area shall be relatively smooth and free of gullies or drifts. <br />2. Mulching material shall be applied immediately before or after <br />seeding unless seed is applied with mulch. When stabilizing sandy <br />soils it is recoJCCnended that seeding will be done after mulch <br />application to prevent seeding too deep. <br />B. Straw or Hay Mulch <br />1. The material will be grass hay or cereal grain straw. (Both <br />referred to as straw in these specifications) <br />2. The normal rate of application shall be 4,000 lbs/Ac of air dry . <br />_. material. <br />3. At least 50$ of the mulch by weight shall be 10 inches or more <br />in length. <br />4. The straw will be free of noxious weeds. <br />5. Mulch Anchoring-apply imrediately after distributing sty <br />Page <br /> <br />