powders of specific particle size, high productivity and versatile applications. By definition, âSpray drying is the transformation of feed from a fluid state into a dried. particulate form by spraying the feed into a hot drying medium.â (Masters, 1991) A spray dryer operates on convection mode.
Sometimes the grounds and maintenance department of a town or county creates mulch from trees that have been cut down and they make it available to the public. To lay a 4-inch-deep spread of bark mulch in a 300-square-foot area, a landscape or garden service will charge $425, which includes the material and labor. You can buy the mulch for $85 and do it yourself, and pocket a 80 percent saving.
Covering a few garden beds might require only a few bags of mulch. However, if you want to cover a large portion of your front or backyard, you probably should buy in bulk. The average price of bulk mulch is between $15 and $65 per cubic yard, though some bags are priced to cover more than one cubic yard.Unless you own a truck or SUV, consider having the mulch delivered to your home, which adds an extra $350 to $700 to these prices.or professional mulch installation, you might pay anywhere between $160 and $270, although this wonât include the cost to buy or deliver mulch. This is determined by the square footage of area you need covered along with labor and delivery costs.