Effect of Liquid Organic Fertilizer and Urea on the Growth and Productivity of Rice With Asymmetrical Irrigation

Long-term use of inorganic fertilizers has negatively influenced rice productivity, being unsafe environmentally.The planned strategy sought to improve rice (Oryza sativa L.) production with a quality of environment-friendly rice cultivation by reducing the excessive inorganic fertilizers.The latest research aimed to analyze the effects of liquid organic fertilizer and urea on the growth and productivity of lowland rice managed with irregular irrigation.The urea (U) comprised four doses, i.e., control 0 kg/ha (U0), 50, 100, and 150 kg/ha (U1-U3, respectively), which fertilized the main plots.The liquid organic fertilizer (LOF) (P) also comprised four levels, viz., control 0 cc/L (P0), 2, 4, and 6 cc/L of water (P1-P3, respectively), which treated the subplots.The urea (100 kg/ha) application resulted in the highest average number of productive tillers (16.8) and the topmost percentage of full grain (84.47%).However, the urea fertilizer (150 kg/ha) produced the maximum flag leaf length (32.3 cm).The LOF concentration (4 cc/L) produced the superior 100-grain weight (2.84 g).The LOF (6 cc/L) produced the utmost index of chlorophyll a (236.43 µmol/m 2 ), chlorophyll b (95.83 µmol.m - 2 ), and total chlorophyll (339.64 µmol.m -2 ).The results showed that the combination of urea fertilizer (150 and 100 kg/ha) and liquid organic fertilizer concentration (LOF 6 cc/L) provided the best productivity of 6.26 and 6.13 t/ha, respectively.