This research, of survey type, aimed at investigation of effective individual, social and economic factors on innovation adoption of "soil test" by cereal planters in Qom province. The population of the study consisted of 2455 cereal planters which were under guiding and technical services coverage. The statistical sample was determined to be 188 using Cochran's formula. Then these people were selected in four areas by sampling. Data were collected by a questionnaire whose face validity was confirmed utilizing opinion of experts and its reliability by Alfa Cronbach test. The results showed, this innovation has not completely been accepted by 67/4% of cereal planters. The knowledge level variables concerning "soil test", the degree of relation with information resources and renewability, participation levels in improving and reclamation projects, social position, motivation degree for farming and job satisfaction, access degree to institutes, degree of positive relationship credit utilizing and significance of comprehensive acceptance behavior of "soil test". According to the results obtained, the following recommendations are suggested: vast spread of "soil test" conducting knowledge and plant nutrition principle among cereal planters through applying Extensional various methods such as distribution of Extensional publications in a continuous and extensive level, schematization for increasing the presence of promoters in cereal planting units, offering useful promotional services to cereal planters by Promotional centers, reconsideration of promotional programs to attract the contribution of the cereal planters and establishing a close relationship among the promoters and the cereal planters.
