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Glutinous rice (Oryza sativa glutinous L.) is one of the most important types of rice for food and health industries. However, the productivity is still low because the cultivation system has not been done optimally. This is also because the research on glutinous rice cultivation is still very small. The objective of this experiment is to get the N fertilizer dosage and seedlings age that can increase the growth and yield as well as the efficiency of solar energy through increased efficiency of absorbed energy use. The treatment consisted of four levels of nitrogen fertilizer dose (D1 = 45 kg ha-1, D2 = 90 kg ha-1, D3 = 135 kg ha-1 and D4 = 180 kg ha-1) and three levels of seedlings age (U1 = 14 days, U2 = 21 days and U3 = 28 days). This treatment combination was arranged in a Split Plot Design with three replications, N fertilizer dosage as the main plot and seedlings age as the subplot. The results showed that the N fertilizer dosage used in this experiment had a significant effect on dry weight, the number of tillers, yields, absorbed use efficiency (AUE) and Energy Conversion Efficiency (ECE). Seedlings age did not give a significant effect on the number of productive tillers and grain yields. The highest grain yield was achieved by treatment of N 180 kg ha-1 fertilizer dose of 9.86 t ha-1 with AUE value of 2.83% and ECE 4.84%.

Effect of Nitrogen Fertilizer Dosage and Seedlings Age on the Yield and Use of Solar Energy in Glutinous Rice (Oryza sativa glutinous L.)