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Farming can destroy soil's rhiziobiome (microbial ecosystem) by using soil amendments such as fertilizer and pesticide without compensating for their effects. By contrast, healthy soil can increase fertility in multiple ways, including supplying nutrients such as nitrogen and protecting against pests and disease, while reducing the need for ...
Changing temperatures can have the effect of increasing the abundance and ability of plant pathogens to produce negative impacts in agricultural ecosystems. [20] Increased levels of carbon dioxide (CO 2 ) , modify the interactions between plants and pathogens and can lead to changes in what plant pathogens are present and how they are able to ...
Soil aeration maintains oxygen levels in the plants' root zone, needed for microbial and root respiration, and important to plant growth. Additionally, oxygen levels regulate soil temperatures and play a role in some chemical processes that support the oxidation of elements like Mn 2+ and Fe 2+ that can be toxic.
The root microbiome (also called rhizosphere microbiome) is the dynamic community of microorganisms associated with plant roots. [1] Because they are rich in a variety of carbon compounds, plant roots provide unique environments for a diverse assemblage of soil microorganisms, including bacteria , fungi , and archaea .
Soil biology plays a vital role in determining many soil characteristics. The decomposition of organic matter by soil organisms has an immense influence on soil fertility, plant growth, soil structure, and carbon storage. As a relatively new science, much remains unknown about soil biology and its effect on soil ecosystems.
Temperature variations are most extreme at the surface of the soil and these variations are transferred to sub surface layers but at reduced rates as depth increases. Additionally there is a time delay as to when maximum and minimum temperatures are achieved at increasing soil depth (sometimes referred to as thermal lag).
The microbiome can recover from the negative effects of drainage through the process of rewetting. [7] [29] But even with this considerable improvement, the microbial community could only attain a similarity to undrained areas when the soil organic matter content was over 70%, indicating a soil that is not highly degraded. [7] [29]
Soil solarization is a non-chemical environmentally friendly method for controlling pests using solar power to increase the soil temperature to levels at which many soil-borne plant pathogens will be killed or greatly weakened. [1] Soil solarization is used in warm climates on a relatively small scale in gardens and organic farms.
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