SECTION 806 – FERTILIZING AND SEEDING
806.01 Description
This Section describes the requirements for providing and placing pulverized limestone, fertilizer, and seed mixtures; and for preparing, seeding, and mulching wildflower seed beds.
806.02 Materials
Provide materials as specified: Fertilizer ................................ ................................ ................................ ................................ .................. 917.02.02 Pulverized Limestone ................................ ................................ ................................ ............................... 917.02.03 Grass Seed Mixture ................................ ................................ ................................ ................................ .. 917.03.01 Wildflower Seed Mixture ................................ ................................ ................................ ......................... 917.03.02 Mulch ................................ ................................ ................................ ................................ ........................... 917.04 Tackifiers................................ ................................ ................................ ................................ ...................... 917.05 Water ................................ ................................ ................................ ................................ ............................ 919.08 Provide hardwood stakes that are relatively knot free. Provide coarse sand that is clean, dry, and salt-free.
806.03 Construction
806.03.01 Fertilizing and Seeding
A.Optimal Seeding Seasons. Seed from March 1 to May 15 and from August 15 to October 15 . When weather and soil conditions are suitable, the RE may allow seeding at other times for soil erosion and sediment control. Notify the RE 24 hours before the seeding operation.
B.Soil Preparation. When the topsoil to be seeded has a pH value of less than 5.8, incorporate sufficient pulverized limestone to increase the soil pH value to 6.5. Test soil for appropriate application of N-P-K in fertilizer in accordance with NJ Fertilizer Law P.L. 2010, Chapter 112. Provide the test results to the RE for approval. Recommended quantities of total oxides (calcium and ma gnesium) to raise the pH of a 4 inch layer of soil to approximately 6.5 as specified in Table 806.03.01-1. Table 806.03.01-1 Recommended Quantities of Total Oxides per Soil Class (Pounds per Acre) Soil (pH) Loamy Sand Sandy Loam Loam Silty Loam 5.7 300 600 900 1200 5.3 to 5.6 600 1035 1500 1800 4.9 to 5.2 900 1500 2100 2400 4.5 to 4.8 1200 1800 2700 3000 4.1 to 4.4 1500 2100 3300 3600 Ensure that the quantity of pulverized limestone required is in proportion to its total oxide content. Cultivate areas to be seeded to provide a reasonably firm but friable seedbed to a depth of 3 to 4 inches. On slopes steeper than 3H:1V, the RE may reduce the depth of cultivation. Remove all vegetation, stones 2 inches or larger in any dimension, and other debris from areas to be seeded.
C.Seed and Fertilizer Application. Sow grass seed mixtures at the rate of 200 pounds per acre. Use only one type of fertilizer to establish turf throughout the Project Limits. At the time of seeding, apply fertilizer at the per acre rate in accordance with the NJ Fertilizer Law P.L. 2010, Chapter 112. When seeding to establish temporary or permanent turf falls within the period that fertilizer is not allowed to be applied, apply fertilizer in the next allowable period. Place seed and fertilizer by either of the following methods:
1.Hydraulic Method. Mix the seed and fertilizer in water, and then apply under pressure at the specified rates. Retreat all areas inadequately covered.
2.Dry Method. Spread fertilizer in dry form separately from seed at the specified rates based on soil test results. Use mechanical spreaders to achieve even distribution. For areas inaccessible to mechani cal spreaders, use hand-operated spreaders. Smooth finished seeded areas to the grades shown on the Plans.
D.Mulching. Mulch seeded areas as specified in 809.03.01. Apply straw or fiber mulch at a minimum of 2,500 pounds per acre as a separate operation after areas have been seeded.
E.Turf Establishment. Protect and maintain seeded areas. Repair damage to seeded areas caused by pedestrian or vehicular traffic or other causes. Apply a second application of fertilizer approximately 6 months after the initial application in accordance with the NJ Fertilizer Law P.L. 2010, Chapter 112. Ensure a total grass coverage of 95 percent weed free and containing plants in proportion to the various kinds of seed in the grass seed mixture with no bare areas larger than 25 square feet. If a stand of grass does not meet this criteria, mow unacceptable grass and weeds to a height of 2 inches, remove unacceptable cut vegetation, prepare a viable seed bed, refertilize, reseed, and remulch until a satisfactory stand of grass is established.
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Source: Standard Specifications for Road and Bridge Construction, 2019 (rev. 2022-12-21) Edition. Pages 403–404 of 651. View official source ↗