Agriculture Land Suitability Evaluator (ALSE) is a decision support system that allows the user to identify the suitable area for different crops. It accepts unlimited numbers of crops and allows the user to introduce his new crops considering the particular Environmental Sciences conditions. The sensitivity analyses and variation of function were used to determine the level of important for each criterion in order to reduce the subjectivity in weights. The ALSE give reliable result to the farmer and indicate the limitation factors.