Increasing the production and quality of the yield of Siam orange fruits in off-season period through the application of liquid organic and guano fertilizer

This research was conducted in Belantih Village, Kintamani District, Bangli Regency, from October 2022 to June 2023. This research aimed to increase the production and quality of the yield of Siam orange through the application of liquid organic fertilizer from cow urine waste and guano fertilizer. This study used a randomized block design with 2 factors and 3 replications. The first factor was liquid organic fertilizer from cow urine waste consist of 4 concentration levels, i.e., 0 ml/l (C₀); 5 ml/l (C₁); 10 ml/l (C₂) and 15 ml/l (C₃), while the second factor was guano fertilizer consists of 4 dose levels, i.e., 0 g/tree (G₀); 1 kg/tree (G₁); 2 kg/tree (G₂) and 3 kg/tree (G₃). The results showed that the interaction between concentration of cow urine waste liquid fertilizer and guano fertilizer doses had no significant effect on all observed variables. Liquid organic from cow urine waste fertilizer improved the yield and quality of the fruits of Siam orange in off-season period, reflected by the higher of harvested fruit weight per tree and weight per fruit at a concentration of 15 ml/l (13.20 kg and 126.32 g), or an increase of 81.32% and 28.14% than those of control (7.28 kg and 98.58 g). While in the Guano fertilizer treatment, the weight per fruit and the weight of the harvested fruit per tree were highest at the dose of 3 kg/tree (118.50 g and 12.64 kg), or an increase of 10.05% and 33.33% compared to the control (107.68 g and 9.48 kg).