Abstract
Swampland was marginal land with considerable potential for rice farming. The key solution to overcome swampland constraints is nutrient, water, and plant management as well as the use of adaptive rice varieties. Inpara (Inbred swamp rice) is a variety released for adaptation to swampland. This research aimed to evaluate the adaptability of Inpara varieties in tidal swampland. The research was conducted at potential acid sulphate soil (Karang Bunga village, Barito Kuala regency) and actual acid sulphate soil (Barambai Kolam Kanan village, Barito Kuala regency). Randomized block design with three replications was applied to examine rice varieties. Data were collected and analyzed by variance analysis, if it is significant it will be tested with DMRT test. The result showed that there was a variation yield and adaptation (Fe score) among varieties tested. Some of the superior adaptive rice varieties were Inpara 1, Inpara 3, Inpara 4, Inpara 6, and Inpara 9 in tidal swampland. The average yield in potential acid sulphate soil was 37.9% higher than that of actual acid sulphate soil. The implication of this research was the variety of Inpara 1, Inpara 3, Inpara 4, Inpara 6, and Inpara 9 can be used as substitute varieties in the tidal swampland.
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