Kartikawati, Rina
Balai Penelitian Tanaman Pemanis dan Serat

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N2O Emissions from Rainfed Sugarcane Plantation Hervani, Anggri; Kartikawati, Rina; Ariani, Miranti; Setyanto, Prihasto
Buletin Tanaman Tembakau, Serat & Minyak Industri Vol 9, No 1 (2017): April 2017
Publisher : Balai Penelitian Tanaman Pemanis dan Serat

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Abstract

Expansion of sugarcane areal to support enhancement production and fulfilment target of self-sufficiency for national sugar should be conducted to see environment impact, particularly related to greenhouse gases emission. The objective of this study was to figure out N2O emission from conventional sugarcane plantation by farmer in rainfed area. The observation of N2O gas was carried out in sugarcane plantation in Sidomukti Village, Jaken District, Pati, Central Java. Sampling of N2O gas was conducted by close chamber method. The study showed that maximum fluxes of sugarcane plantation before and after fertilizer application are 4.011 and 223 µg N2O m-2 day-1. Meanwhile, after fertilizer application the maximum and minimum fluxes of N2O are 6.408 and 25 µg N2O m -2 day-1. N2O emission from sugarcane plantation recorded in rainfed area as 4.21 ± 2.53 kg N2O ha-1 year-1 with potential of global warming number as 1.31 ton CO2-e per hectar per year.Emisi N2O dari Pertanaman Tebu di Lahan Tadah HujanPerluasan areal tanam tebu untuk mendukung peningkatan produksi dan pemenuhan target swasembada gula nasional sudah dianggap perlu untuk melihat dampak lingkungan khususnya mengenai evaluasi emisi gas rumah kaca dari pertanaman tebu. Tujuan dari penelitian ini adalah untuk mengetahui emisi gas N2O dari sistem pertanaman tebu secara konvensional petani di lahan tadah hujan. Pengamatan gas N2O dilakukan pada lahan perkebunan tebu di desa Sidomukti Kecamatan Jaken Kabupaten Pati Provinsi Jawa Tengah. Pengambilan sampel N2O menggunakan metode sungkup tertutup. Hasil penelitian menunjukkan bahwa fluks maksimum pada pertanaman tebu sebelum pemupukan sebesar 4,011 µg N2O m -2 hari-1 dan fluks minimum sebesar 223 µg N2O m -2 hari-1, sedangkan fluks maksimum setelah pemupukan sebesar 6,408 µg N2O m -2 hari-1 dan fluks minimum sebesar 25 µg N2O m -2 hari-1. Emisi N2O pertanaman tebu sebesar 4.21 ± 2.53 kg N2O ha-1tahun-1 dengan nilai potensi pemanasan global sebesar 1.31 ton CO2-e per hektar per tahun.
Pemanfaatan Lahan Tadah Hujan untuk Budidaya Padi Unggul dalam Menghadapi Perubahan Iklim Kartikawati, Rina; Yunianti, Ika Ferry; Wihardjaka, Anicetus; Setyanto, Prihasto
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 6, No 2 (2017): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Kartikawati et al, 2017. Utilization of Rainfed Rice Areas for High Yielding Rice Cultivation on Climate Change. JLSO 6(2):142-149.Many efforts have been conducted by Indonesian government for national food supply and food security through rice cultivation on sub optimal lands in accelerating food sustainability particularly rice, maize and soybean. The rainfed area is an important sub optimal land which should be developed due to 26,5% of Indonesia rice production produced from cultivation system in those area. However, the cultivation in rainfed areas have challenges such as changing of rainfall pattern due to climate change. Therefore, to obtain the information of productivity from high yield rice varieties and methane emission in rainfed area, a study has been conducted by applying innovation of environmental friendly technology such as fertilizer use based on integrated cropping calendar. The study was carried out at Research Station of Indonesian Agriculture Environment Research Institute in Jakenan, which is one of rainfed area in Pati District, Central Java Province. The study was conducted on first growing season (GS 1) or rainy season by applying direct seeded system using rice seeder. Four rice varieties were used for this study, namely Ciherang, Dendang, Inpari 31 and Inpari 24. The study showed that productivity of four rice varieties were 5.92; 7.10; 5.06 and 7.41 t/ha, respectively. Methane emission was significant different among the varieties as 232; 319; 300 and 405 kg/ha/season, respectively.