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Soil nailing is a remedial construction measure to treat unstable natural soil slopes or unstable man-made (fill) slopes as a construction technique that allows the safe over-steepening of new or existing soil slopes.
By 1972 Hunter Plastics employed 364 staff. [8] Throughout the 1970s Hunter was very successful - at the time PVCu was displacing traditional materials cast-iron gutters and soil pipes, lead waste pipes, earthenware soil pipes and so the business grew every year as traditional materials lost market share.
The Warkworth Sands Woodland occurs on aeolian sand deposits south of Singleton in the Hunter Valley. [1] These sand dunes are thought to date from the Pleistocene, are from 1–6 m high and rest on a river terrace. [2] Under the Commonwealth EPBC Act it is listed as Warkworth Sands Woodland of the Hunter Valley. [4]
They consist of a number of curved steel slats bolted to the frog along the length of the mould board, with gaps between the slats. They tend to break up the soil more than a full mould board and improve soil movement across the mould board when working in sticky soils where a solid mould board does not scour well. [citation needed] A steel plough
Soil vapor extraction (SVE) is a physical treatment process for in situ remediation of volatile contaminants in vadose zone (unsaturated) soils (EPA, 2012). SVE (also referred to as in situ soil venting or vacuum extraction) is based on mass transfer of contaminant from the solid (sorbed) and liquid (aqueous or non-aqueous) phases into the gas phase, with subsequent collection of the gas phase ...
A simple soil moisture sensor for gardeners. Soil moisture sensors measure the volumetric water content in soil. [1] Since the direct gravimetric measurement of free soil moisture requires removing, drying, and weighing of a sample, soil moisture sensors measure the volumetric water content indirectly by using some other property of the soil, such as electrical resistance, dielectric constant ...
Because the leached soil in many tropical regions, such as the Amazon, are nutritionally extremely poor, slash-and-burn is one of the only types of agriculture which can be practiced in these areas. Slash-and-burn farmers typically plant a variety of crops, instead of a monoculture, and contribute to a higher biodiversity due to creating mosaic ...
Negative plant–soil feedback is thought to be an important factor in helping plants to coexist. If a plant is over-abundant, then soil pathogens and other negative factors will become common, hurting its growth. [2] Similarly, if a plant becomes overly rare, then so too will its soil pathogens and other negative factors, helping its growth. [2]