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Winarna
Pusat Penelitian Kelapa Sawit,Jl. Brigjen Katamso No. 51 Medan
Agriculture, Biological Sciences & Forestry

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EMISI CO2 PADA BEBERAPA PRAKTEK KULTUR TEKNIS KELAPA SAWIT DI LAHAN GAMBUT Muhammad Arif Yusuf; Suroso Rahutomo; Winarna
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (813.293 KB) | DOI: 10.32734/jpt.v4i1.3073

Abstract

Penelitian untuk mengetahui Besarnya emisi CO2 pada perkebunan kelapa sawit di lahangambut dan untuk mengetahui praktek kultur teknis yang rendah emisi telah dilakukan diKabupaten Labuhan Batu, Sumatera Utara. Metode pengukuran yang digunakan adalahpengukuran langsung dengan metode close chamber technique menggunakan Portable GasChromatography. Penelitian ini menunjukkan bahwa tata kelola air yang baik, pemadatantanah, dan penanaman legume cover crop merupakan praktek kultur teknis yang rendah emisiCO2. Rerata emisi CO2 pada kebun kelapa sawit di lahan gambut yang menerapkan tatakelola air yang baik (kedalaman muka air tanah sekitar 50 cm), pemadatan tanah sebelumpenanaman, dan penanaman Mucuna bracteata sebagai cover crop berturut-turut sebesar33,69 ton/ha/tahun, 35,30 ton/ha/tahun, dan 34,40 ton/ha/tahun. Nilai rerata emisi CO2tersebut lebih rendah dibandingkan pada kebun kelapa sawit dengan tata air yang buruk(kedalaman muka air tanah sekitar 100 cm), tanpa pemadatan tanah saat penanaman, dantanpa cover crop yang berturut-turut mencapai 66,71 ton/ha/tahun, 65,55 ton/ha/tahun, dan63,49 ton/ha/tahun.
DISTRIBUSI HARA DALAM TANAH DAN PRODUKSI AKAR TANAMAN KELAPA SAWIT PADA METODE PEMUPUKAN YANG BERBEDA Edy Sigit Sutarta; Winarna; Muhammad Arif Yusuf
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.785 KB) | DOI: 10.32734/jpt.v4i1.3074

Abstract

The effectiveness of fertilization could be influenced by the type of fertilizer and the rightmethod. There are several methods of fertilization, such as fertilizer applied in pockets andscattered. Relations fertilization method with root distribution of oil palm plantations andnutrients in the soil need to be known, so it can be determined in a more effective method offertilization for oil palm plantations. The observation was performed 1 year after application,includes observation of the soil (physical and chemical properties) and the observation of theroot (primary root, secondary, tertiary). Examples of soil and roots were taken at depths of00-20 cm, 20-40 cm, 40-60 cm, 60-80 cm, and 80-100 cm at a distance of 50 cm, 100 cm,150 cm, 200 cm, 250 cm, 300 cm, 350 cm, 400 cm from the base of the stem. The resultsshowed that the distribution of nutrients in the soil surface is greater than the layerunderneath and root production decreased due to lower soil layers.
Co-Authors Edy Sigit Sutarta Muhammad Arif Yusuf Suroso Rahutomo