Pengaturan Populasi Tanaman untuk Meningkatkan Produktivitas Padi pada Lahan Rawa Pasang Surut

Abstract

Increasing rice productivity on tidal swamp area need to meet available and affordable technologies. Plant population arrangement through planting method is the one of the cultivation technology which not widely adopted yet by farmers in tidal swamp ecosystem. Farmers generally used scattered plant arrangement called hambur. The research was conducted on tidal swamp type B at Karang Agung’s Experimental Field and farmer’s field in Sukaraja Village, Tungkal Ilir District, Banyuasin Regency, South Sumatera, 2018. The experiment was arranged by using split plot design with three replications. The main plot was rice variety (consisted of Inpara-2 and Inpara-8) and sub plot was plant population consisted of [1] Farmer’s practice (hambur/scattered), [2] Legowo 2:1 (213.333 population/ha), [3]Jarwo ganda 1 (376.470 population/ha), and [4] Jarwo ganda 2 (571.428 population/ha). Plant population arrangement in tidal swamp area was significantly effected by location and variety. Legowo 2:1, jarwo ganda 1 and jarwo ganda 2 had significantly higher yield than hambur. Hambur showed higher panicle number per m2 but lower grain filling ability and grain number per panicle. Through plant population arrangement, farmers could reached higher yield and saving seed consumption. Meanwhile, Inpara-2 tended to be more adaptive to population arrangement than Inpara-8. The jarwo ganda 1 with 376,470 plant/ha showed the highest yields for the Inpara-2 variety. Furthermore, we need to identify simple mechanization to help farmer for sowing by adopt plant population arrangement in tidal swamp land