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UNITED STATES DEPARTMEN21 OF AGRICULTURE Technical Guide <br /> Soil Conservation Service Section IV <br /> Colorado A11 Field Offices <br /> February 1982 <br /> STANDARDS AND SPECIFICATION <br /> MULCHING - 484 <br /> (Acre) <br /> Standard <br /> Definition B. Straw or Hay Mulch <br /> Applying plant residues or other 1 . The material will be grass <br /> materials not produced on the site to hay or cereal grain straw (both . <br /> the soil surface. referred to as straw in these <br /> specifications) . <br /> Purpose <br /> 2. The normal rate of appli- <br /> To conserve moisture; prevent surface cation shall be 4,000 lbs/ac. of <br /> compaction or crusting; reduce runoff air-dry material spread uniformly <br /> and erosion; control insects; and help over the area. <br /> establish plant cover. <br /> 3. At least 50% of the mulch <br /> Conditions where practice applies by weight shall be 10 inches or <br /> more in length. <br /> On soils subject to erosion on which <br /> low-residue-producing crops, such as 4. The straw will be free of <br /> grapes and small fruits are grown; on noxious weeds. <br /> critical areas; and on soils that have <br /> a low infiltration rate. 5. One of the following <br /> methods of anchoring the straw <br /> mulch will be used: <br /> Specifications <br /> a. Manufactured mulch <br /> A: General netting: Mulch netting will be <br /> pulled hand tight over straw. <br /> 1­1 . The area shall be relatively Mulch netting will be held firmly <br /> smooth and free of gullies or drifts. in place by metal pins commer- <br /> cially available from mulch net <br /> 2. Mulching material shall be manufacturers for this purpose. <br /> applied immediately before or after They are usually made of 8 guage <br /> seeding unless seed is applied with wire and are 6-8 inches long. Pin <br /> the mulch. When stabilizing sandy spacing will be in accordance with <br /> soils it is recommended that seeding the manufacturer's instructions. <br /> will be done after mulch application If the soil is sandy or otherwise <br /> to prevent seeding too deep. For loose, use longer pins and wooden <br /> additional information refer to stakes to firmly secure the <br /> Agronomy Technical Note 1147 (Rev. 1) . netting. <br /> TGN 0182 2/82 <br />