Study of Organic Fertilizers and Rice Varieties on Rice Production and Methane Emissions in Nutrient-Poor Irrigated Rice Fields

The problem of rice farming in Indonesia is the increasing extent nutrient-poor land due to lack addition organic matter and continuously inundated irrigated fields, causing production greenhouse gas emissions, such as methane (CH4), increase. study aims determine impact fertilizers varieties on yield, feasibility fields. used a randomized block design factorial with four replicates. first factor type (compost straw goat manure), second variety (Ciherang, Inpari 20, 30). results showed that productivity 20 (8.02 t·ha?1) was significantly higher than 30 (6.10 Ciherang (6.91 t·ha?1). highest yields Harvest Dry Grain (HDG) Milled (MDG) were (88.23%), (86.94%), (85.04%). Methane (CH4) emissions (56.4 kg h?1 season?1), followed by (40.8 lowest (22.3 season?1). Compared varieties, compost has broad development viability paddy fields (highest R/C ratio break-even point). More research needed (methane, nitrite, carbon dioxide).