This study was aimed to find out the participation, perception, and farmer response of the use of varieties Mekongga of rice seed in Manunggal Karso Farmer Group, Sidomulyo village, district of Godean, Sleman Regency. The study has been done Gapoktan Sidomulyo in Sidomulyo village, Godean District choose by purposivally, because Gapoktan Sidomulyo is only one farmers group in Godean sub district which get the paddy seed Mekongga varities, and there is a gapoktan called Gapoktan Sidomulyo in Sidomulyo village, which cooperate with Technical Implementation Unit (UPT) District Godean in organizing field school for farmer groups which is incorporated with Gapoktan Sidomulyo. The sampling method used in this study was census method to Manunggal Karso Farmer Group which took part in the field school program. The data was collected using questionnaire and interview which were given to the farmers. The result of the study showed that the participation of the farmers on the use of rice seed varieties of Mekongga. aspect which was include in the “high” category, the perception aspect which was include in the “excellent” category, and response was included in the “positive” category.