D2944-22 Standard Practice of Sampling Processed Peat Materials for Horticultural Purposes
D2973-22 Standard Test Method for Total Nitrogen in Peat Materials
D2977-22 Standard Practice for Particle Size Range of Peat Materials for Horticultural Purposes
D2978-23 Standard Test Method for Volume of Peat and Peat-Based Growing Media
D4531-15 Standard Test Methods for Bulk and Dry Density of Peat and Peat Products
D4544-20 Standard Practice for Estimating Peat Deposit Thickness
D5268-23 Standard Specification for Topsoil Used for Landscaping and Construction Purposes