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342-4 Critical Area Planting <br />Mulching <br />Critical area plantings ,shall be mulched where rapid establishment of seeded <br />species is essential, or where one_o_r more. of the_following factors amore likely. <br />to cause failure of the planting, as determined by the responsible technician. <br />1. Low or erratic precipitation <br />2. Droughty or slowly permeable soils <br />3. High soil temperatures <br />4. Erosive soils <br />5. Drying winds <br />Where need for mulching has been determined, follow standard and specifications <br />for "Mulching" (484). Cover crops or crop residues produced on the_site will <br />satisfy.mulching_requirements..if present in_suffcienE..quantity.,to provide <br />needed soil.„protection. and moisture conservation. <br />Planting trees, shrubs and vines <br />1. Planting of woody plants must be done in late winter or early spring before <br />bud burst. <br />2. Roots shall be kept moist at all times before planting. <br />3. Roots should be spread out as close to natural position as possible during <br />planting. <br />4. Holes shall be deep and wide enough to accommodate seedlings without bending <br />roots. <br />5. Stock should be set tiie same depth as in the nursery or slightly deeper. <br />In no case should a plant be set shallower than it was in the nursery.. <br />6. Soil shall be packed well around roots until seedling cannot be easily pulled <br />from the ground. Care should be taken to eliminate all air pockets in the <br />soil around the roots. <br />7. Plants shall be watered at planting time. <br />Supplemental water for establishment of plantings <br />1. Seeded plantings. In low rainfall areas, where water is available and where <br />rapid establishment is needed, irrigation of new seeding should be performed <br />during the first growing season. Water should be applied _a t__approximate~ <br />1-week intervals, at a rate of 3/4 - 1 inch per implication,, when rainfall <br />is deficient for plant development. <br />2. Woody plantings. Woody transplants should be watered_at.,time of_planting, <br />followed .by application of_at least l gallon per plant per week,_applied <br />to the soil at the base of the plant during the first growing season. <br />USDA/SCS/Colorado-7/81 TGN ~117Q <br />