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<br />• past and future land use considerations. <br />3.5 Disking <br />Disking will be applied as a seedbed preparation and fertilizer incorporation treatment on areas that <br />will be seeded, as specified. Offset-disk implements are preferred for use due to the characteristics of <br />seedbed materials. To complete the disking operation, the disk will be towed behind an agricultural <br />tractor at a speed which minimizes surticial disturbance and optimizes fertilizer incorporation. <br />3.6 Harrowing <br />Harrowing is the preferred method of seedbed preparation for areas which are accessible to <br />revegetation equipment, particularly where cover crops have been used as a mulching method. A <br />flexible-tine harrow is preferred where excessive amounts of rock fragments occur in the seedbed <br />material. With respect to more conventional equipment, aspring-tooth harrow is preferred over aspike- <br />tooth implement though both types are acceptable for use. Hanowing is applicable for seedbed <br />preparation, incorporating fertilizer into the seedbed, and for covering broadcast seed. As with disking, <br />passes over the seedbed should be kept to the minimum necessary to meet operational objectives. <br />3.7 Broadcast Fertlllzatlon <br />Fertilizer will be broadcast over the seedbed using hand-operated "cyclone-type" seeders or rotary <br />broadcast equipment attached to construction or revegetation machinery. When an area is disked or <br />harrowed to complete seedbed preparation, broadcast fertilization can occur simultaneously with disking <br />or harrowing to simplify the revegetation process. All equipment used will be equipped with metering <br />devices. Fertilizer application will take place prior to the final seedbed preparation Veatment to ensure <br />the incorporation of fertilizer into the seedbed. Fertilizer broadcasting operations should not be <br />conducted when wind velocities would intertere with even fertilizer distribution. <br />Fertilizer will be applied at rates commensurate with recommendations resulting from seedbed <br />material sample analysis. All nutrients will be applied in a single application. The most soluble <br />phosphorus fertilizer material should be selected for use. Aslow-release type fertilizer Is preferred as a <br />source of nitrogen. Additionally, fertilizer materials with the lowest salt index available should be used. <br />3.8 Drill Seeding <br />Drill seeding is preferred for planting operations where aerial conditions permit. Drill seeding will be <br />completed using a drill implement preferably equipped with the following features: <br />7 <br />