| Penulis/Author |
ANDIN MUHAMMAD ABDUH (1); Dr. Ir. Eko Hanudin, M.P., IPU, ASEAN Eng (2) ; Prof. Dr. Ir. Benito Heru Purwanto, M.P., M.Agr. (3); Prof. Dr. Ir. Sri Nuryani Hidayah Utami, M.P., M.Sc. (4) |
| Abstrak/Abstract |
Methane (CH4) emission from paddy rice fields is a global concern; however, engineering plant spacing can decrease CH4emission. Due to this, field research was conducted to measure CH4emissions from rice fields planted usingjarwo 2:1spacing, which hasa 25 × 12.5 cm and 50 cm for the plant-free area (PFA),compared to tegel, which has a spacingof25 × 25 cm. Each field was treated with organic fertilizer (mixture of cow manure and neem compost in a ratio of 1:1) with one of four doses: 0, 3, 6 and 9 tons/ha. The results showed that chemical properties such as soluble-Fe, soil organic matter (SOM), soil acidity (pH), and redox potential (Eh)were significantly correlated with CH4emissions (0.52***, 0.47**, 0.36*, and -0.27* respectively). Jarwo 2:1had lower CH4emissions than tegelon all doses of fertilizer. The most efficient dose of fertilizer was 3 tons/ha applied jarwo 2:1because it was able to produce rice up to 12 tons/ha with CH4emissions of only 34kg/ha/season, while CH4emissions in tegelwas 39 kg/ha/season. It is concluded that jarwo 2:1with 3 tons/ha organic fertilizers can be recommended to farmers because it produces lower CH4emissions and higher rice yield |
