Residue management : Improving soil organic matter and reducing soil erosion.


Crop residues are materials usually not taken away but rather left in a field or orchard after the crop has been harvested. They include stalks, stubble, leaves, roots and seed pods. Some crop residues are removed from the land to be used as straw in stables, as animal feed or as a source of energy and may or may not be returned to the land later (e.g. with manure). .
 
Crop residues remaining on the land supply additional SOM (SOC) to the soil, improving soil structure, root system development and plant growth.
 
Additionally, residues kept at the surface will be less disturbed by using reduced tillage and they can help to reduce erosion and surface soil evaporation (the residues act as mulch).

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Relational Mapping