874 Commercial fertilizers shall be supplied separately or in mixtures containing the specified percentages of total nitrogen, available phosphoric acid, and water soluble potash. Fertilizer shall be furnished in standard containers with weight, name of plant nutrients and guaranteed percentages, clearly marked, all in accordance with governing State and Federal laws. Brands must be regi stered with the West Virginia State Department of Agriculture.
715.26.1 Fertilizer for Seeding: Fertilizer for seeding shall consist of any type with a 1 -
2-1 ratio providing the minimum nutrient equivalent specified. Urea formaldehyde fertilizer shall contain a minimum of 38 percent (38%) slowly available nitrogen. Commercial fertilizer for seeding may be supplied in any of the following forms, subject to the approval of the Engineer.
i.A dry, free flowing fertilizer that may be applied by ordinary agr icultural spreaders. ii. A fertilizer which is water soluble or one which will permit complete suspension of insoluble particles in water, applicable to hydraulic methods of application.
715.26.2 Fertilizer for Landscape Planting: The fertilizer shall be a co -granulated
magnesium ammonium phosphate and magnesium potassium phosphate, controlled release, inorganic fertilizer compound (coarse grade). It shall have a guaranteed minimum analysis of: Percent Nitrogen ................................ ................................ ................................ ....7 Maximum water soluble ammoniacal nitrogen ................................ ......... 2 Minimum water insoluble ammoniacal nitrogen ................................ ......5 Phosphoric acid (available P 2O5) ................................ ............................ 40 Potash(K 2O) ................................ ................................ .............................. 6
715.27 Mulch Material :
715.27.1 Mulch Material for Seeding:
715.27.1 1-Straw Mulch: Straw mulch for seeding shall include baled wheat or oats
straw, or baled grass hay. Alfalfa, clover and salt grass hay are not acceptable. Straw mulch shall be dry and reasonably free from weeds, sticks, or other forei gn material. Acceptance shall be based on the Division's visual inspection of the material.
715.27.1 2-Wood Cellulose Mulch: Mulch for use with the hydraulic application of
grass seed shall consist of wood cellulose fiber. It shall contain no growth o r germination inhibiting factors and shall be dyed green. When the material is agitated in slurry tanks with fertilizers, grass seed, water and other approved additives, the fibers shall become uniformly suspended to form a homogeneous slurry. The hydrau lically sprayed slurry shall form a blotter -like ground cover impregnated with grass seed. The ground cover shall permit the absorption of water and allow rainfall or mechanically applied water to percolate to the underlying soil.
Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 896–896 of 1,006.