Soil compaction occurs when weight of heavy machinery compresses the soil, causing it to lose pore space. Affected soils become less able to absorb rainfall, thus increasing runoff and erosion risks. Plants have difficulty in compacted soil, because the deficiency in air and water and the limited root growth, as the denser soil is more difficult to penetrate. Compaction of agricultural soils is a concern to farmers, since soil compaction may reduce crop yield.

To assess different crop production practices regarding their impacts on soil compaction the following assessment parameters were taken into account:

1. weight of equipment and its use in periods with high precipitation when soil is moist and thus extremely sensitive to compaction,
2. number of total cross overs on the field due to field traffic increasing the risk of wheel ruts and highly compacted tracks and
3. the tillage system, as the risk of soil compaction can be reduced by means of reduced tillage in comparison to conventional tillage by plough which can lead to plough pans in the sub-soil that cannot be easily removed.

All alternative production practices of all crops defined for the model were assessed by their goal achievement levels using a fuzzy logic tool with the optimum being a zero risk regarding soil compaction by agricultural activities.