This study investigated the use of herbicides with a reduced dosage, along with a cytogate surfactant, and a combination of two herbicides with a 50% reduction of dosage for each herbicide, in addition to the evaluation of weed control and forage production. The scientific application of herbicides, along with surfactants and their safety has not been studied enough to reduce the use of herbicides. The effects of surfactants as a way of increasing the efficiency of herbicides: Generally, additive refers to any substance that by adding to the spray solution improves or modifies the performance of Pesticide. Some additives are added to the formulation and others to the spray solution on the farm. The additives in terms of the use of chemicals increase the performance and efficiency of herbicides at three levels:1. Improving the interaction of products or chemical compounds in sprayer tank 2- Improving interaction of a product with target surface 3- Improving product moves into the target. Adjuvants constitute the largest group of additives that non-ionic ones (which have no electric charge) comprise the majority of them. Generally, adjuvants are bipartite compounds that a part of them has hydrophilic properties and other part has lipophilic properties, which these two parts are bonded together. The hydrophilic and lipophilic balance of adjuvant is a measure of the relative distribution of hydrophilic and lipophilic components of it, and this characteristic has obvious effect on the performance of additives along with herbicide.This study aimed to evaluate the impact of surfactant on herbicide efficiency in Medicago sativa L. fields. To this end, a randomized complete block design with 10 treatments and 4 replications was used in three and four-year alfalfa fields, infested with different weeds. The treatments included the standard dose and a 20% reduced dose, a combined treatment and a control sample (weeding and no weed control). Combination of the treatments was applied along with cytogate, and included mixtures of Imazethapyr and Bentazon, Bentazon and Pyridate, and Imazethapyr and Pyridate, with 50% reduced dose of each herbicide. Generally, herbicides applied along with the cytogate surfactant were more efficient for weed control, as well as for an increase of the product yields, as Imazethapyr herbicide along with cytogate surfactant managed to control weeds. Results showed that combination of herbicides can also be useful in controlling weeds in alfalfa fields and increasing product yields.