Agricultural sectors in Basra City experienced pollution and salinity when the Tigris and Euphrates rivers did not release enough water, therefore, the low quality of irrigation water, saline and contaminated soils are increasingly attracted researchers to investigate further in this field in Iraq. Subsequently, the purpose of this project is to improve soil salinity and heavy metal removal using sustainable food waste. Anaerobic Digestion Food Waste (ADFW) was treated to produce an acid stage and then added to salinity-polluted soil that was taken from Basra city's agricultural area at depths of 5 and 20 cm in varying percentages (1%, 2%, and 4%). Fenugreek plants were planted in eighteen containers. Weka 3.8 model were built and evaluated to predict shoot length of plant at different adding percentage of ADFW. The outcomes of the FT-IR spectroscopy, sequential extraction and kinetic test were demonstrated that ADFW had a high affinity for Cd, Zn, Ni, and Pb. Sodium adsorption ratio, electrical conductivity, and exchangeable sodium percentage results, on the other hand, indicated that soil at a depth of 20 cm and remediation with 2% and 4% of ADFW fell within the salinity-sodic range. The result from Weka model predict that adding 7% of ADFW can reduce SAR and increase shoot length of plant. When compared to other pots, these results can enhance the growth and length of young branch of Fenugreek plant.