The organic rice was used in this study as an experimental material. The temperature in greenhouse solar dryer was measured by 9 positions and 3 positions of high and length with including ambient temperature. The temperature was carried measure greenhouse solar dryer system and hybrid gasifier system and every time that was measured the solar radiation. The period time was measure on 9.00 AM -5.00 PM. The gasifier was measured fuel consumption, gas flow rate and composition of gas to calculate the cold gas efficiency. In the prediction of period time of drying organic rice was carried out for test with hot air oven laboratory on similar temperature of greenhouse solar dryer. The initial moisture of organic rice was 25 % and final moisture of 15% was after experimented.