Global Warming Potential from System of Rice Intensification Paddy Fields with Varies Water Levels
| Main Authors: | Arif, Chusnul, Setiawan, Budi Indra, Munarso, Deka Trisnadi, Nugraha, Muhammad Didik, Sinarmata, Pradha Wihandi, Ardiansyah, Ardiansyah, Mizoguchi, Masaru |
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| Other Authors: | Kemenristek-DIKTI |
| Format: | Article info application/pdf eJournal |
| Bahasa: | ind |
| Terbitan: |
Balai Penelitian dan Pengembangan Irigasi
, 2017
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| Subjects: | |
| Online Access: |
http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/149 http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/149/201 |
Daftar Isi:
- System of Rice Intensification (SRI) is known as alternative rice farming for the mitigation of greenhouse gas (GHG) emissions. There are two main gasses emitted from paddy fields, i.e., methane (CH4) and nitrous oxide (N2O). Both of these gases have different characteristics as response on water availability in the fields which is represented by groundwater levels. Global Warming Potential (GWP) is used as an index that allowed comparisons of the global warming impacts of different gases at specific time period to warm the earth and it is equivalent to the value of the potential of CO2. This study aimed to analysis the global warming potential from different water regimes with SRI practices. Achieving the objective, rice cultivation with three water regimes was carried out during one planting season (14 April until 5 August 2016) in experimental plots of Department of Civil and Environmental Engineering IPB, Bogor, Java West. The regimes were continous flooding, moderate and dry regimes, respectively. The results showed that dry regime has the lowest global warming potential than those others regimes. Its potential was 34% and 41% lower than those for flooding and moderate regimes, respectively. In addition, dry regime produced more grain yield. Its productivity was 21% greater than that flooding regime. These results were obtained from specific climate and location. To corroborate the results, further research is needed under different weather conditions and multi-locations.
- System of Rice Intensification (SRI) merupakan budidaya alternatif padi sawah untuk mitigasi Gas Rumah Kaca (GRK). Dua jenis GRK utama yang diemisikan dari padi sawah adalah gas metana (CH4) dan dinitrogen oksida (N2O). Gas tersebut memiliki respon berbeda terhadap keragaman ketersediaan air di lahan yang direpresentasikan dengan tinggi muka air tanah. Global Warming Potential (GWP) atau potensi pemanasan global digunakan untuk membandingkan potensi GRK dalam memanaskan bumi pada periode tertentu, dan disetarakan dengan nilai potensi gas CO2. Penelitian ini bertujuan untuk membandingkan potensi pemanasan global pada berbagai rezim air dengan ketinggian muka air yang berbeda di lahan sawah yang menerapkan SRI. Penelitian dilakukan pada budidaya padi sawah dengan tiga perlakuan rezim air selama satu musim tanam (14 April hingga 5 Agustus 2016) di plot percobaan laboratorium lapang Departemen Teknik Sipil dan Lingkungan IPB, Bogor, Jawa Barat. Ketiga perlakuan rezim air tersebut adalah rezim tergenang, moderate dan kering . Hasil penelitian menunjukkan bahwa rezim air kering menghasilkan potensi pemanasan global terendah dibandingkan kedua rezim yang lain. Nilai potensi pemanasan global yang dihasilkan adalah 34% dan 41% lebih rendah dibandingkan rezim air tergenang dan moderate. Rezim kering mampu meningkatkan produktivitas tanaman 21% lebih besar dibandingkan rezim air tergenang. Untuk memperkuat hasil yang diperoleh ini, maka penelitian lanjutan diperlukan dengan kondisi cuaca yang berbeda dan lokasi yang beragam.