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Fill dirt is usually subsoil (soil from beneath topsoil) and underlying soil parent material which has little soil organic matter or biological activity. Fill dirt is taken from a location where soil is being removed as a part of leveling an area for construction; it may also contain sand, rocks, and stones, as well as earth.
Conceptually, the process of tillage erosion (E Ti) can be described as a function of tillage erosivity (ET) and landscape erodibility (EL): [9]. E Ti = f(ET, EL) . Tillage erosivity (ET) is defined as the propensity of a tillage operation, or a sequence of operations, to erode soil and is affected by the design and operation of the tillage implement (e.g., the size, arrangement and shape of ...
The distance these soil particles travel can be as much as 0.6 m (two feet) vertically and 1.5 m (five feet) horizontally on level ground. If the soil is saturated, or if the rainfall rate is greater than the rate at which water can infiltrate into the soil, surface runoff occurs.
According to recent observations, early signs of spring have already begun in the southern United States. In the Southeast, the spring leaf-out process is 1-2 weeks later than the long-term average.
Winter sowing is an easy, low-maintenance technique for planting seeds in miniature, makeshift greenhouses that you can make yourself from upcycled materials. The only materials and equipment you ...
California’s eco-bureaucrats halted a wildfire prevention project near the Pacific Palisades to protect an endangered shrub. It’s just the latest clash between fire safety and conservation in ...