Growth and production of lowland rice (Oryza sativa L.) with water management systems on the application of various combination of fertilizers and planting systems

Abstract

This study aimed to determine the growth and production of rice in various water management systems, the application of a combination of fertilization and planting systems. The research was carried out from June to September 2016 in Ponrangae Village, Sidrap Regency. The trial used a split-split plot design with water management system set as main plot, a combination of nitrogen fertilizer as subplot and planting system as sub-sub plot. Two water management system applied were stagnant and intermittent management systems. Three fertilization packages were used by applying different combination of inorganic and organic fertilizers. The sub-subplot consisted of three planting system namely tiled planting system, 2:1 and 4:1 legowo planting systems, respectively. The results show that the interaction of intermittent water management system with the application of 50 kg ha-1 Urea + 250 kg ha-1 NPK + 2.5 L ha-1 liquid organic fertilizer resulted in the highest number of productive tillers. Interaction of intermittent water management with the application of 50 kg ha-1 Urea + 250 kg ha-1 NPK + 2.5 L ha-1 liquid organic fertilizer and 4:1 legowo planting system produced highest weight of 1,000 grains. Application of 50 kg ha-1 Urea + 250 kg ha-1 NPK + 2.5 L ha-1 organic fertilizer with the 4:1 legowo planting system showed the highest harvested and milled dry grain.