This study aims to determine the effectiveness of the communication model applied and to know the relationship between socio-economic factors and the effectiveness of communication in corn agribusiness. The location of the study was determined purposively (sampling) of Oeteta and Karang Sirih villages with the consideration that both villages have dry land and corn production centers in both districts. The respondent taken from the farmers who grow corn at Oeteta and Karang Sirih villages. The respondent were chosen by simple random sampling of 124 respondent. Data was analized descriptive and use Rank Spearman Correlation. The results are: 1) the effectiveness application of communication in corn agribusiness West Timor was moderate category, with the average score 2.79 or 55.81%. 2) education, proneness of innovation, adapter category and family size were significantly correlated to the effectiveness of communication
