Rice Varieties Cropping Patterns for High Yield and Optimal Cropping Index in Tidal Swamp
Optimizing tidal swamp land to increase rice productivity and yields could be carried out by increasing the cropping index (IP). This research was conducted to obtain information on the opportunity to increase the cropping index through the use of improved varieties. The study was conducted in January-December 2019 in Sukaraja Village, Banyuasin Regency, South Sumatera by testing three cropping patterns with four replications. The cropping pattern treatments were: P1: Regas (planting season/PS 1)-Regas (PS 2); P2: Inpara 2 (PS 1)-Inpara 2 (PS 2); P3: Inpara 2 (PS 1)-Inpari 19 (PS 2)-Inpari 19 (PS 3). Regas is a commonly planted variety, Inpara 2 is an improved variety, and Inpari 19 is an early maturing variety. The cultivation was using an Intensive, Super, and Actual Tidal Swamp (RAISA). The observation was conducted on growth, yield, and yield comparison between cropping patterns. The combination of rice-rice cropping pattern with Inpara 2 was the highest yield was 11.35 ton ha-1 GKG or 34.6% higher than Regas. The cropping index in tidal swamp land is potential to be increased to three in high annual rainfall conditions and supported by high-yielding and early maturing rice varieties.
Keywords: cropping pattern, land optimization, RAISA, swamp cultivation, swampy rice