# Agronomical Benefits of increasing SOM

## Chemical

* Soil organic matter significantly improves the soil’s capacity to store and supply essential nutrients (such as nitrogen, phosphorus, potassium, calcium and magnesium), and to retain toxic elements.
* It allows the soil to cope with changes in soil acidity- pH. 
* Helps soil minerals to decompose faster.
* As an addition, in time this can lead to higher crop yields and a reduction in nutrient application (depending on the soil type and its ability to store carbon). 
* Soils with higher clay content will always be more responsive as their ability to capture carbon is much higher than soils of  low clay content, particularly sandy soils.

## Physical

* Soil organic matter improves soil structure.
* This ultimately helps to control soil erosion, improves water infiltration and water holding capacity, giving plant roots and soil organisms better living conditions. An increase of 1% organic matter (about 0.5% increase in carbon) can result in the soil being able to hold over 150 000 extra litres of water per hectare *(**http://traceandsave.com/carbon-the-key-to-storing-more-water-in-the-soil/**)*.
* It helps to make soils more friable and thus easier to work, as an addition this leads to less energy required to grow crops.

## Biological

* Soil organic matter is a primary source of carbon (C) which gives energy and nutrients to soil organisms.
* This supports soil functionality because it improves the activity of microorganisms in the soil and it can enhance biodiversity.
* As an addition capturing carbon in the soil also lowers emissions of CO2 to the atmosphere, and this mitigates climate change.

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**Documents**

- [What is soil?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/what-is-soil-gRuZM4zZR6)
- [Soil Microbes / Microbial Biomass < 5% soil mass](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/soil-microbes-microbial-biomass-5-soil-mass-qg38xBHeSj)
- [Functions of the Microbial Biomass](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/functions-of-the-microbial-biomass-TSEVOVTRuS)
- [What are SOM and SOC?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/what-are-som-and-soc-w0gOjdsBo2)
- [How to score your soil?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/how-to-score-your-soil-Oyv3RohGUy)
- [How to increase SOM?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/how-to-increase-som-YSKc4fav2d)
- [How to calculate from SOC % to t/ha?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/how-to-calculate-from-soc-to-tha-ccMWIj01CD)
- [How long will it take for the soil to be "full" of carbon?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/how-long-will-it-take-for-the-soil-to-be-full-of-carbon-IQ9NTVfbSY)
- [How to maintain the organic matter level in soil?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/how-to-maintain-the-organic-matter-level-in-soil-e4Tu2KRJUf)
- [Agronomical Benefits of increasing SOM](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/agronomical-benefits-of-increasing-som-QZzWrYXd8d)
- [Choosing cover crops](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/choosing-cover-crops-byZi137O0k)
- [Common cover crop species](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/common-cover-crop-species-hjBpvpwnpF)
- [How to do cover crop mixes?](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/how-to-do-cover-crop-mixes-3upeHsTZo1)
- [Establishment methods of cover crops](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/establishment-methods-of-cover-crops-Ah2i9bkmxw)
- [Termination methods of cover crops](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/termination-methods-of-cover-crops-JURSvNl1cr)
- [Residue management](https://eagronom.getoutline.com/s/96e3c8d3-79b7-4af0-89ec-a283ee06eb8b/doc/residue-management-rU53bPH69y)