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12 <br /> <br />Recommended Vegetation Management Procedures <br /> <br />Establishment Phase <br />This site should not be mowed and/or driven on if very wet soil conditions exist at <br />the time of the maintenance visit, to avoid rutting and compaction. <br />Year 1: <br /> Complete site mowings to control annual/biennial weed canopy and <br />prevent production of viable seed. Three mowing trips are typical depending <br />on soils, weather patterns and planting dates. Due to the type of grasses <br />found on Nguyen, three mowing trips in the first year are recommended to <br />prevent panel shading and control weed growth. <br />• Mowing to be done using specialized zero-radius mowers and/or flail <br />mowers <br />• Target mowing height of 4-6 inches. <br /> <br />Year 2 <br />• Complete site mowing to control annual/biennial weed canopy and prevent <br />production of viable weed seed. <br />• Two mowing trips likely along with the use of herbicides as necessary during <br />both trips. <br />• Mowing to be done using specialized zero-radius mowers and/or flail <br />mowers. <br /> <br />Year 3 <br />• Integrated Vegetation Management using mowing and spot spraying <br />depending on growth and weed populations. <br />• Two trips likely in Year 3. <br />Maintenance Phase <br />Years 4 - 34: Integrated Vegetation Management <br />• Two IVM site visits are typical depending on vegetation status. <br />• Each visit will likely include mowing, spot herbicide applications and/or <br />herbicide wicking. <br />• Equipment used includes tractor and/or ATV mounted sprayers. <br />• Include a complete site mowing once every 3 years to mulch up biomass <br />and recycle nutrients.