When rainfall occurs, overland water flow can transport sediments from the upper to lower slope positions; meanwhile, it also infiltrates from the topsoil
layer to the deeper soil layer with the eluviation of CaC[O.
Good q-uality topsoil
contains the fibrous roots of turf stripped from the site before it was excavated.
Bulk compost made from yard waste can cost less than $20 per scoop, but expect to pay twice that much for screened, aged organic farm compost mixed with good topsoil
, established in 1826 by James Dandy, now employs a team of 25 people and has a pounds 2.
Nevertheless, characterisation of topsoil
moisture content at catchment and seasonal scales on Mediterranean soil surfaces are scarcely reported and few works are available concerning the effect of physiographic conditions controlling the spatial pattern of topsoil
moisture in Mediterranean soils.
Dig to break up the compacted soil, add lime and organic matter and increase the depth of topsoil
to achieve the most satisfactory long-term results.
The only problem with topsoil
is that the water that drains through it stains the surface underneath.
Intensive fertility programs including micronutrients can improve the productivity of subsoil, but fertilizer alone cannot replace the benefits of topsoil
(Mielke and Schepers 1986; Olson 1977).
If you have hollows in your lawn, provided they aren't too deep you can top-dress them a few times between spring and autumn with a mixture of topsoil
, compost and sand or ready-made turf dressing to rejuvenate the area.
According to the United Nations Convention to Combat Desertification, during the Dust Bowl years, "At least five inches of topsoil
were lost from nearly 10 million acres.
Sodbusters plowed up close to one hundred million acres of grassland and a drought followed by winds blew tons of topsoil
across the American High Plains and as far east as Washington, DC.
Then, near the bottom of the hill, the steepness decreases and the land becomes relatively flat or forms a depression, where topsoil