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All Journal Seminar Nasional Lahan Suboptimal PERTANIAN TROPIK
Marpaung, Imelda S
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Agriculture, Biological Sciences & Forestry Other

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Teknologi Budidaya Padi Sawah Tadah Hujan untuk Meningkatkan Produktivitas dan Pendapatan Petani di Pesisir Pantai Sumatera Utara (Studi kasus Kec.Tanjung Beringin Kab.Serdang Bedagai) Parhusip, Dorkas; H, Lermansius; S, Perdinanta; Sari G, Setia; Girsang, MA; Nainggolan, P; Marpaung, Imelda S; Sri Ulina, Evawaty
Seminar Nasional Lahan Suboptimal 2021: Prosiding Seminar Nasional Lahan Suboptimal ke-9 “Sustainable Urban Farming Guna Meningkatka
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Parhusip D, H Lermansius, S Perdinanta, GS Setia, Girsang MA, Nainggolan P, Marpaung IS, Ulina ES. 2021. Rainfed rice cultivation technology to increase productivity and income of farmers in coastal North Sumatra (Study case Tanjung Beringin District Serdang Bedagai Regency). In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-9 Tahun 2021, Palembang 20 Oktober 2021. pp. 498-507.  Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Serdang Bedagai Regency is one of the food crop development areas in North Sumatra which has begun to optimize sub-optimal land use such as rainfed land. Rainfed lowland rice cultivation in this area faces problems with the availability of new superior varieties, quality seeds, unbalanced use of fertilizers, and high use of pesticides. The purpose of writing this paper is to provide information on the implementation of rice cultivation technology in rainfed rice fields and provide input for improving technology for rainfed rice cultivation on the coast for the community and policy makers. This paper is a scientific review of location-specific technological innovations for rice cultivation that can be applied to rainfed rice fields, including the use of new high-quality varieties, balanced fertilization, the use of organic materials with the use of rice consulting services (LKP). The implementation of site-specific technology in rainfed rice fields is absolutely necessary to increase rice productivity and farmers' income on the coast of Serdang Bedagai Regency, North Sumatra.
CO2 MEASUREMENT IN PALM OIL PLANT IN PEATLAND Sebayang, Lukas; Marpaung, Imelda S
Jurnal Online Pertanian Tropik Vol. 9 No. 2 (2022): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.698 KB) | DOI: 10.32734/jopt.v9i2.9225

Abstract

Peatlands are one of the contributors to greenhouse gas emissions because it is estimated that the carbon stock stored in them is around 528 Giga tons (Gt) or equivalent to 75% of the total carbon (C) in the atmosphere, so that if peat is oxidized it will cause carbon to be released into the air. The conversion of forest land to agricultural land can be one of the causes, including the activity of making drainage channels. The construction of drainage channels causes a decrease in the water table so that the volume of peat under aerobic conditions increases while increasing the activity of microorganisms in decomposing peat. Peat decomposition and root respiration contribute to carbon emissions. This study aims to determine the CO2 concentration in several conditions of oil palm roots. CO2 measurement by survey method on oil palm plantations, using the IRGA (Infra Red Gas Analyzer). Measurements are carried out once per month from January to May 2020 for 3 minutes. The point of observation was determined by 2 factors with 3 treatments and 3 replications. Factor 1 is the observation point in the area of accumulation of midrib pieces and other litter (B1) and factor 2 is the observation point in the road area around the tree (B2). While the treatments were (A1) natural roots, (A2) roots were cut when the measurements were going to be taken and (A3) roots were cut and permanently restricted. The results of the measurement of the highest average concentration of CO2 changes from 0 minutes to 3 minutes in January were in treatment B1A3 (140.4 ppm), February in treatment B2A3 (103.9 ppm), March B1A3 (124.6 ppm) ppm), April B1A3 (143.8 ppm) and May B1A3 (110.7 ppm). Meanwhile, the lowest concentration of CO2 changes from 0 minutes to 3 minutes in January was in treatment B1A1 (71.5 ppm), February in treatment B1A1 (25.7 ppm), March B2A3 (40.2 ppm), and March B2A3 (40.2 ppm). April B2A1 (30.6 ppm) and May B1A1 (43.2 ppm). From the measurement results, it can be concluded that the highest concentration of CO2 and its changes was in treatment B1A3, namely in the treatment of cutting roots with permanent blocks, while the concentration of CO2 and its reduced changes was in the treatment of natural roots (A1) both in Blocks B1 and B2.
Co-Authors Girsang, MA H, Lermansius Lukas Sebayang, Lukas Nainggolan, P Parhusip, Dorkas S, Perdinanta Sari G, Setia Sri Ulina, Evawaty