Where fertility of a soil is not…
When it rains, the nutrients in the soil are washed away.
“Soil carbon” refers to the amount of decomposing plant matter in soil.
Heavy rainfall can cause soil erosion, in which case the iodine-rich upper layers of soil are washed away.
Cultivation, Loosening and breaking up (tilling) of the soil.
Soil organism, any organism inhabiting the soil during part or all of its life.
Soil treatments are designed to kill soil-inhabiting nematodes, fungi, and bacteria.
Levels of soil moisture are important for plant and crop growth, soil erosion, and slope stability.
The development of soil conservation strategies requires knowledge of actual and acceptable rates of soil erosion.
In the mountains there may be only a few inches of soil over rock; in old valleys the soil may be hundreds of feet deep.
To better harness the benefits of soil and to prevent the situation getting worse, soil experts think regular testing is vital.
Soil chemistry, discipline embracing all chemical and mineralogical compounds and reactions occurring in soils and soil-forming processes.
For soil-dwelling protozoans the cyst is an important refuge when soil moisture disappears or when soil water becomes frozen.
However “dead” soil may appear, it is in fact teeming with millions or billions of microbial cells per gram, depending upon soil fertility and the environment.
Megafauna are the principal agents of soil turnover and distribution; this movement loosens soil structure, improves aeration and drainage, and distributes soil microorganisms.
Microbially-strong soil will hold together; more inert soil will collapse, as it did, notoriously, in Dust Bowl America – an iconic example of what can happen when soil goes wrong.
…century a general theory of soil fertility developed, embracing soil cultivation, the enrichment of soil with humus and nutrients, and the preparation of soil in accordance with crop demands.
Biological soil crust, also called cryptobiotic soil crust, microbiotic soil crust, or cryptogamic soil crust, thin layer of living material formed in the uppermost millimetres of soil where soil particles are aggregated by a community of highly specialized organisms.
Prof Rickson said an alternative approach is to ignore measurement of soil properties and reward farmers for farming in ways that typically improve soil carbon, such reduced ploughing, planting “cover crops” that hold soil together in winter, and grass buffer strips to catch soil running off fields in the rain.
Focus topics include soil biodiversity, soil trophic interactions and food webs, the soil microbiome, soil-plant interactions, soil biogeochemical cycling, soil bioremediation and restoration, soil multi-functionality, response and adaptation of soil biota to environmental changes, and breakthrough technologies, novel theories and modeling of soil ecological processes.
- anything regarded as making something unclean
- make soiled, filthy, or dirty
Example: don't soil your clothes when you play outside!
- the part of the earth's surface consisting of humus and disintegrated rock
- material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)
- the geographical area under the jurisdiction of a sovereign state
Example: American troops were stationed on Japanese soil
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Focus topics include soil biodiversity soil trophic interactions and food webs the soil microbiome soil-plant interactions soil biogeochemical cycling soil bioremediation and restoration soil multi-functionality response and adaptation of soil biota to environmental changes and breakthrough technologies novel theories and modeling of soil ecological processes