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Soil pH, Soil for planth grow, Soil organic content, Why soil pH is…
Soil pH
The uptake of nutrients by plant roots is affected by the pH of the soil. In absolute terms the pH scale runs from pH 1 (acid) to pH 14 (alkaline)
The pHof a soil may be depent, in most cases the biggest influence tends to the type of parent rock the mineral components are formed from or the pH of the water that flows into the area by rivers or lakes.
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Soil organic content
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A range of descomposers take part in complex interactions that eventually return the nutrient contained within dead matter back into a form that is readily available to plants to use as nutrients.
In addition to providing a store for plant mineral nutrients organic matter has a number of other effects on soil characteristics. High levels of organic matter have the following positive effects. The open, sponge-like structure of organic matter allows air to penetrate which is very useful for soils that naturally have few air spaces. Humus, the material left after organic matter has been partially decomposed, has the ability to hold onto minera nutrients until they are needed by plants.
As with the availability of mineral nutrients to plants, the ph of the soil has an impact on the well-being of decomposers in the soil. Changing the soil pH can affect the ability of these organisms to break down organic matter effectively.
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