<![CDATA[Rice farming requires a sustainable management strategy to maintain soil quality and water use efficiency.The habit of burning straw and inundation irrigation that is predominantly used by farmers often reducessoil quality and nutrient balance. This study aimed to determine the dynamics of C:N:P stochiometry instraw management and irrigation management during one planting season and determine the best treatmentcombination for changes in C:N:P stochiometry. The study was conducted in Subak Suala, Bali, using arandom design complete with two factors: irrigation management (ngenyatin, inundation, and AlternatingWetting and Drying - AWD) and straw management (burning and planting straw). Data were obtainedthrough soil sampling on 30 treatment plots, tested in the laboratory and the results were analyzed usingthe two-way ANOVA test to evaluate the combination of irrigation treatment and hay management to theC:N:P ratio of soil. The Z test is used to determine the difference in the average ratio of CN, CP and NPbefore and after treatment. The results of the data analysis showed that the CN ratio ranged from 3.81–17.50 with the largest decrease (40%) in inundation irrigation and straw immersion. The CP ratio rangesfrom 8.83–47.16 and decreases more significantly (50%) in AWD irrigation and straw burning. The NPratio ranged from 0.75–4.77 with the largest decrease (46%) in AWD irrigation and straw burning, as wellas a small increase (5%) in ngenyatin irrigation and straw immersion. This study proves that strawimmersion is more effective in maintaining carbon and nitrogen balance than burning straw, while AWDirrigation systems are more optimal in maintaining the availability of phosphorus. A combination of strawplanting and an AWD irrigation system is recommended to support sustainable land productivity in Subak]]>
