Article Per Year (5 Year)
p-Index From 2020 - 2025
1.203
P-Index
This Author published in this journals
All Journal Jurnal Sumberdaya Alam dan Lingkungan Jurnal Zeolit Indonesia Jurnal Penelitian Pertanian Terapan Jurnal Agro Industri Perkebunan JURNAL PERTANIAN PRESISI (JOURNAL OF PRECISION AGRICULTURE) Journal of Tropical Crop Science Jurnal Agrotropika
Dewi Riniarti
Jurusan Budidaya Tanaman Perkebunan, Politeknik Negeri Lampung Jln. Soekarno-Hatta No. 10 Rajabasa, Bandar Lampung, Telp (0721) 703995. Fax: (0721) 787309
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education

Published : 11 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 11 Documents
Search

 1   2 
EFFECTS OF ZEOLITE AND LIQUID WASTE OF MSG (MONOSODIUM GLUTAMATE) ON PRODUCT OF NILAM PLANT (Pagostemon Cablin BENTH) IN ULTISOLS Kusumastuti, Any; Parapasan, Jonathan; Riniarti, Dewi
Jurnal Zeolit Indonesia Vol 6, No 1 (2007)
Publisher : Jurnal Zeolit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (49.636 KB)

Abstract

Ultisols is soil which predominate area in Lampung Province. This soil is rather acid until acid reaction, low in cation exchange capacity (CEC) and organic materials content so that cause inefficient of fertilization. Zeolite is a available and potential mining products and it is abundant available in Lampung Province. It can also to improve CEC of soil so that the absorption of soil to fertilizer can be increased. Besides, it has a high negative charges, so that it can also absorbed of nutrients and discharged it slowly. A liquid waste of MSG is an agroindustrial waste which enough potential. The waste contains the high enough organic materials and compound, especially nitrogen. Low of organic materials at Ultisols, caused needed an input to this management, for example combination usage of zeolite and liquid waste MSG. Nilam is plantation crop which have a good enough prospect, and have potency as state resource of stock-exchange and also can open the new employment. This research arranged in garden of Lampung State Polytechnic, Hajimena district, with Ultisols, it’s started from July until January 2006. The research was conducted on factorial method with randomized block design, consist of 2 factors, zeolite application Z0 (0;1,5; 3,0; 4,5 ton/ha), and liqud waste of MSG (0; 2000; 4000, 6000 l/ha). The data were analysed and then, if the F-test is significantly different we continued with mean of BNT test. Using zeolite at 1,5 ton/ha level increased the plant fresh weight and at 3,0 ton/ha level improved the plant dry weight. Using liquid waste of MSG at of 6000 l/ha level, the highest result of fresh weight and dry weight of plant. Interaction of zeolite and liquid waste of MSG at combination of 4,5 ton/ha and 2000 l/ha showed the highest result on fresh weight and dry weight of root. The combination of 3,0 ton/ha and 6000 l/ha of zeolite and liquid waste of MSG showed the highest result on the ratio of root weight.
Pengaruh Jenis Limbah Agro Industri Terhadap Keragaan Bibit Sawit Main Nursery pada Ultisol Riniarti, Dewi; Kusumastuti, Any; Tahir, M.
Jurnal Penelitian Pertanian Terapan Vol 13, No 2 (2013)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (77.667 KB) | DOI: 10.25181/jppt.v13i2.175

Abstract

This study aims to (1) the effect of type of waste on the performance of oil palm seeds (2) get the best incubation time to obtain good quality compost and its effect on the performance of seeds (3) get a good composition of the media to get the performance of both oil palm seedlings and its influence terhdap Ultisol physical properties, and (4) the effect of interaction between the type of waste, a long incubation, and the composition of the planting medium terhdap the performance of oil palm seedlings and Ultisol physical properties. The experiment was conducted in Palm Nursery Polytechnic Lampung from July 2009 until April 2010., Designed in factorial randomized block design. The treatments consisted of 3 (three) factors. The first factor is the type of waste consisting of sugar cane waste (bagase) and empty fruit bunches (Tankos) palm oil. The second factor is the length of incubation of waste, consisting of 2 (two) and 3 (three) weeks. Factors to 3 (three) is the composition of media, namely: 1 (compost): 4 (ground); 1 (compost): 5 soil, and 1 (sand): 4 (ground) as a control. Each treatment was replicated 3 (three) times, each experimental unit consisted of two seeds. The results showed that the sugar agro waste (bagasse) effect on plant height is better than empty fruit bunches Palm Oil (Tankos); waste Incubation period 3 weeks performed better on the character of dry weight, ratio of crown root and seedling growth rate; Bagas incubated 3 weeks influential The best in plant height; media composition had no effect on the growth characteristics of oil palmseedlings in the main nursery. Keywords: Oil Palm Seedlings, bagase, empty fruit bunches palm oil, incubation periode, and ultisol.
Pengaruh Bahan Organik, Pupuk P, dan Bakteri Pelarut Phosfat Terhadap Keragaan Tanaman Kelapa Sawit pada Ultisol Riniarti, Dewi; Kusumastuti, Any; Utoyo, Bambang
Jurnal Penelitian Pertanian Terapan Vol 12, No 3 (2012)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (105.688 KB) | DOI: 10.25181/jppt.v12i3.216

Abstract

This study was aims to determine the effect of organic matter kind, phosphate fertilizers, phosphate solubilizing bacteri, and an interaction effect between type of organic matter with phosphate fertilizers, and phosphate solubilizing bacteri on vigour of oil palm at ultisol. The study was designed as a factorial in a randomized block design and each treatment was repeated 3 (three) times. The treatment consisted of 3 (three) factors. First factor were kind of organic matter: bagase and empty fruit bunches of oil palm, and without organic matter; second factor were Phospate fertilizer consisted of 45 grams of P2O5 per tree (the recommended dose) or 125 g SP-36 and 56.25 g per tree (125% recommended dose) or 156.25gSP-36; and third factor were with and without of posphat solubilizing bacteri. The results showed that: the organic material bagasse provided vegetative characters (leaf number, petiole length, leaf angle, leaf chlorophyll content, and in the number of leaves) of oil palm plantations in the Ultisol was better than empty fruit bunches of oil palm plantations in ultisol, and empty fruit bunches of palm oil gave the generative character (the number of female flowers, sex ratio) on oil palm plantations in the Ultisol better than bagasse. Key words: organic matter, phosphate fertilizer, phosphate solubilizing bacteria,vigour of oil palm before producted, and ultisol.
Karakterisasi Morfofisiologi dan Hasil Minyak 10 Genotip Nilam (Pogostemon cablin Benth.) Wulansari, Retno; Tahir, Muhammad; Indrawati, Wiwik; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 6 No. 1, Mei 2018
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (0.036 KB) | DOI: 10.25181/jaip.v6i1.657

Abstract

Characterization of morphophysiology and oil yield of 10 patchouli genotypes (Pogostemon cablinBenth.) aims to test the morphology and physiology character of nine genotypes Aceh patchouli and one comparative clone (Lhokseumawe), obtain high yield oil clones (weight plant and essential oil content), and obtain genetic and phenotypic variabilities that can be used as a new genotype selection indicators. The research was conducted at Experimental Field and Plant Laboratory of the State Polytechnic of Lampung in April until November 2016. This research used Randomized Block Design (RBD) with 10 treatment levels and 3 replications.The LSI test results on the physiological character of the nine genotypes and one comparative clone showed that NPL 9 genotypes superior to the variables of the angle of petiole, chlorophyll content, leaf area, specific leaf area, and leaf area index. The NPL 9 genotypes resulted higher yield and rendement yields than other genotypes tested and one comparator, that was 2,36%. The character of stem production and rendement has a genetic variant value greater than the environmental variant. For genetic variability and phenotypic variability in the variables observed relatively uniform so that can not be used as an indicator of selection.   Keywords: Aceh patchouli, leaf character, selection indicator, variability of genotype, variability of phenotype
Karakteristik Cendawan Mikoriza Arbuskula (CMA) pada Beberapa Rhizosfer Tanaman Perkebunan Yuliyanto, Indra; Utoyo, Bambang; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 4 No. 2, Oktober 2016
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (0.036 KB) | DOI: 10.25181/aip.v4i2.51

Abstract

The development of Mycorrhizal Arbuscular Fungi (MAF) in general is influenced by the conditions of the rhizosphere and fungi spores. Rhizosphere conditions are conditions around the roots such as temperature, pH, and root exudates. While the condition is a fungal spore dormancy and maturity spores. The aim of this study was to determine the amount of FMA on some plantation crops rhizosphere, to determine the type of crop rhizosphere FMA on some plantations, as well as to determine the dominance of FMA on some plantation crops rhizosphere. The experiment was conducted at the Laboratory Analysis State Polytechnic of Lampung. Month trial period from December 2014 to July 2015. The method used in this study is a description of the method by observation. Based on research results and observations of mycorrhizal spores in the rhizosphere of plants cocoa, rubber, coffee, and palm oil was found that on average the highest number of spores found in oil palm plantations (2.4 spores), while the lowest number of spores present in the rubber plantations (1 spore ). Type spores on all plantation crops rhizosphere dominated by species Glomus with different types (10 types). Glomus Type 2 dominates on all plantation crops rhizosphere.Keywords: estate crop, mycorrhizae, rhizospherePermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/51
Analisis Sistem Persediaan Bahan Baku Air Kelapa pada Industri Nata de Coco (Studi Kasus PT Keong Nusantara Abadi) Pangesti, Shella Puji; Saty, Fadila Marga; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 7 No. 2, Oktober 2019
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (0.036 KB) | DOI: 10.25181/jaip.v7i2.1111

Abstract

Inventory is an important thing for the industrial company, so determination of order quantity must be done optimally and reduce the inventory cost.  PT Keong Nusantara Abadi is an industrial company for processing of nata de coco that requires an inventory control system so that the purchase of raw material becomes optimal.  Therefore, this research was conducted to analyze inventory control carried out by PT Keong Nusantara Abadi and determine alternative methods of inventory control of raw material for the company.  This research use Material Requirement Planning (MRP) system.  MRP system has two ways to determine the order quantity called lot sizing decision.  Techniques for determining the quantity of order is Economic Order Quantity (EOQ), Lot for Lot (LFL), and Part Periode Balancing (PPB).  The technique of determining the order quantity that is best use by PT Keong Nusantara Abadi is EOQ which result in lower inventory cost than inventory control techniques by the company that is saved by 9%, 10%, 7,3% consecutively during 2015, 2016, and 2017.
UJI EFEKTIVITAS HERBISIDA NABATI EKSTRAK RIMPANG ALANG-ALANG (Imperata cylindrica (L.) P. Beauv.), BRANDJANGAN (Rottboellia cochinchinensis (Lour.) W.D. Clayton), DAN LAMPUYANGAN (Panicum repens L.) PADA GULMA DI PERTANAMAN KOPI Hidayat, Khoerul Anwar; Riniarti, Dewi; Widiyani, Dimas Prakoswo; Sukmawan, Yan
Jurnal Pertanian Presisi (Journal of Precision Agriculture) Vol 7, No 2 (2023): Jurnal Pertanian Presisi
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/jpp.2023.v7i2.9331

Abstract

Keberadaan gulma dapat menyebabkan penurunan produksi dan kerusakan pada tanaman kopi. Umumnya petani mengendalikan gulma menggunakan herbisida sintetis yang mengandung senyawa glifosat yang memiliki sifat toksik bagi kopi.  Oleh karena itu, alternatif lain yang dapat digunakan adalah herbisida nabati yang mengandung senyawa alelokimia (alelopati). Penelitian ini bertujuan untuk mendapatkan jenis herbisida nabati yang terbaik dari tumbuhan rimpang alang-alang (Imperata cylindrica (L.) P. Beauv.),  brandjangan (Rottboellia cochinchinensis (Lour.) W.D. Clayton), dan lampuyangan (Panicum repens L.) untuk pengendalian gulma di pertanaman kopi.  Penelitian ini dilaksanakan di lahan praktikum tanaman kopi belum menghasilkan dan Laboratorium Analisis Politeknik Negeri Lampung pada  Oktober - Desember 2022. Penelitian ini menggunakan RAK faktor tunggal dengan 6 ulangan.  Perlakuan nya yaitu B0 = kontrol, B1 = ekstrak rimpang alang-alang, B2 = brandjangan, dan B3 = lampuyangan.  Volume semprot sebanyak 660 ml.plot-1 dengan konsentrasi ekstrak herbisida 16%, Jika berbeda nyata di uji lanjut BNT 5%.  Variabel penelitian terdiri dari identifikasi gulma, jumlah gulma, jenis gulma, Summed Dominance Ratio (SDR), tingkat kematian gulma, dan bobot kering gulma.  Temuan dari penelitian ini adalah herbisida nabati ekstrak rimpang alang-alang, brandjangan, dan lampuyangan dengan konsentrasi 16%, tidak berbeda nyata pada pengendalian gulma di pertanaman kopi karena dengan konsentrasi 16% tidak memberikan dampak yang fatal pada gulma.
Evaluasi Dampak Lingkungan pada Pembibitan Kelapa Sawit (Elaeis guineensis Jacq.) dengan Pendekatan Penilaian Daur Hidup Sukmawan, Yan; Dewi, Rosita; Riniarti, Dewi; Agusta, Herdhata; Sudradjat, Sudradjat
Jurnal Sumberdaya Alam dan Lingkungan Vol 11, No 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jsal.2024.011.02.2

Abstract

ABSTRAK Sebagai tahap awal dalam siklus hidup tanaman kelapa sawit (Elaeis guineensis Jacq.), praktik pembibitan kelapa sawit menjadi aspek penting yang memerlukan evaluasi lebih dalam. Pemahaman mengenai dampak lingkungan pada fase pembibitan adalah kunci untuk merancang strategi pengelolaan yang berkelanjutan, mengurangi kerusakan ekosistem, dan mencapai keseimbangan antara produksi dan konservasi alam. Penelitian ini bertujuan untuk menganalisis dampak lingkungan pembibitan kelapa sawit di Unit Pembibitan Kelapa Sawit (UPKS) Politeknik Negeri Lampung menggunakan pendekatan penilaian daur hidup atau life cycle assessment (LCA). Studi ini difokuskan pada penilaian daur hidup gate-to-gate yang dilaksanakan dari Oktober hingga Desember 2023. Data dikumpulkan melalui kunjungan lapang dan wawancara dengan pengelola UPKS. Ruang lingkup LCA dimulai dari penerimaan kecambah hingga bibit siap salur. Permodelan dampak lingkungan menggunakan openLCA versi 2.0.3 dengan metode CML-IA baseline dan database pendukung Agribalyse v3.0.1. Hasil penelitian menunjukkan bahwa secara umum pembibitan kelapa sawit memberikan dampak lingkungan yang tidak signifikan. Kontribusi dampak lingkungan terbesar berasal dari dampak sekunder, khususnya marine aquatic ecotoxicity sebesar 190.52122 kg 1,4-DB eq. dan abiotic depletion (fossil fuels) sebesar 5.65733 MJ. Dampak primer potensi global warming (GWP100a) sebesar 0.27033 kg CO2 eq. yang dominan berasal dari penggunaan polybag dan potensi human toxicity sebesar 0.08227 kg 1,4-DB eq. Upaya pengurangan dampak lingkungan dapat dilakukan dengan penggunaan pot tray yang dapat digunakan berulang kali atau alternatif polybag dari bahan organik, kombinasi pupuk anorganik dan pupuk organik untuk mengurangi dosis pupuk anorganik, dan mengurangi laju evapotranpirasi dari tanaman dan media tanam dengan penggunaan mulsa organik dan media tanam yang mengandung bahan organic. Kata kunci: dampak lingkungan, kelapa sawit, LCA, pemanasan global, pembibitan ABSTRACT As the initial stage in the oil palm (Elaeis guineensis Jacq.) plant life cycle, oil palm seedling cultivation becomes a crucial aspect that requires in-depth evaluation. Understanding the environmental impact at the seedling phase is critical to designing more sustainable management strategies, reducing ecosystem damage, and achieving a balance between production and conservation. This study aims to present an environmental impact analysis of oil palm seedling cultivation at the Oil Palm Nursery Unit (UPKS) of Politeknik Negeri Lampung using the life cycle assessment (LCA) approach. This study focuses on a gate-to-gate life cycle assessment conducted from October to December 2023. Data were collected through field visits and interviews with UPKS managers. The LCA scope covers from seed acceptance to ready-to-distribute seedlings. Environmental impact modeling used openLCA version 2.0.3 with the CML-IA baseline method and supporting database Agribalyse v3.0.1. Results indicate that oil palm seedling nursery generally has an insignificant environmental impact. The most substantial contributions come from secondary impacts, mainly marine aquatic ecotoxicity at 190.52122 kg 1,4-DB eq. and abiotic depletion (fossil fuels) at 5.65733 MJ. Primary impacts are potential global warming (GWP100a) at 0.27033 kg CO2 eq., primarily from polybag use, and potential human toxicity at 0.08227 kg 1,4-DB eq. Efforts to mitigate environmental impacts can be achieved by using reusable pot trays or organic material-based polybags as alternatives, coupled with a combination of inorganic and organic fertilizers to reduce the dosage of inorganic fertilizers. Additionally, curtailing evapotranspiration rates from plants and growing media can be accomplished by employing organic mulch and growing media enriched with organic matter. Keywords:  environmental impact, global warming, LCA, nursery, oil palm
Evaluasi Kinerja Tenaga Penyadap Karet (Hevea brasiliensis Muell. Arg.) Berdasarkan Kualitas Sadap Herlinda, Fadila; Tahir, Muhammad; Delvitasari, Febrina; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Vol. 10 No. 1 (2022)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v10i1.1744

Abstract

The performance of tappers has an effect on the high or low level of production and productivity of the latex produced by a company.  However, many tappers are only fixated on the production target (quantity) that must be achieved rather than paying attention to the quality of the tapping.  This study aims to analyze the performance of tappers based on the quality of tapping and the factors that influence it and to determine the application of the premium system.  The research was conducted from November to December 2019 at PT Perkebunan Nusantara VII Way Berulu, Pesawaran, Lampung.  The research used a survey method and purposive sampling technique by selecting 12 tappers based on age, education level, and work experience and observing 5 sample trees from each tapper.  Data were analyzed using descriptive analysis and level test analysis of 5%. The results showed that the performance of tappers is in the good category, because it has few wood wounds and the depth of tapping and bark consumption is in accordance with recommended norms.  The factors of age, education level and work experience do not have a significant effect on the performance of tappers.  All tappers do not receive a premium because it does not exceed the task bases.
PENGARUH APLIKASI PUPUK ORGANIK CAIR (POC) KOTORAN KAMBING DAN SAPI TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PEMBIBITAN UTAMA Usodri, Kresna Shifa; Utoyo, Bambang; Riniarti, Dewi; Widiyani, Dimas Prakoswo; Sari, Resti Puspa Kartika; Guna, M. Mulya Adi
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11499

Abstract

This study investigates the efficacy of liquid organic fertilizers (POC) derived from goat and cow manure as environmentally friendly alternatives for enhancing oil palm seedling growth. Conducted at the Oil Palm Nursery Unit of Politeknik Negeri Lampung (January–June 2024), the experiment employed a factorial randomized block design. Two factors were tested: POC from goat manure (0, 100, and 200 ml per seedling) and POC from cow manure (same levels). Growth parameters observed included seedling height, stem diameter, leaf count, leaf chlorophyll content, and leaflet area. Data were analyzed using ANOVA at a 5% significance level, followed by Least Significant Difference tests for mean comparison where applicable. Results show that goat manure POC at 200 ml per seedling significantly improved seedling height, leaf count, and chlorophyll content, while cow manure POC at the same dose enhanced height, stem diameter, and leaf number most effectively. No significant interaction effect between goat and cow manure treatments on any growth parameter was observed. These findings suggest that both goat and cow manure-derived liquid organic fertilizers, applied at 200 ml per seedling biweekly, can optimally support early growth of oil palm seedlings. However, their combined application did not yield synergistic benefits. The use of these organic fertilizers offers a sustainable alternative to conventional synthetic fertilizers and may contribute to improved nursery management practices in oil palm cultivation.
Co-Authors Albaeroni, Muhamad Any Kusumastuti Bambang Utoyo Delvitasari, Febrina Guna, M. Mulya Adi Herdhata Agusta Herlinda, Fadila Hidayat, Khoerul Anwar Jonathan Parapasan, Jonathan Kresna Shifa Usodri M Tahir Maryanti Muhammad Tahir Pangesti, Shella Puji Raden Mohamad Herdian Bhakti Rosita Dewi Sari, Resti Puspa Kartika Saty, Fadila Marga Sudradjat Sudradjat TATI NURHAYATI Widiyani, Dimas Prakoswo Wiwik Indrawati, Wiwik Yan Sukmawan, Yan Yuliyanto, Indra