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Contact Name
Cindy Hardianti Nufus
Contact Email
hardianticindy@gmail.com
Phone
+6287808194930
Journal Mail Official
ijop.maksi@gmail.com
Editorial Address
Gedung F Technoparks Kampus IPB Darmaga, PO. BOX 220 Bogor, Jawa Barat
Location
Unknown,
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INDONESIA
International Journal of Oil Palm
ISSN : 25993496     EISSN : 26142376     DOI : https://doi.org/10.35876/ijop.v7i1
International Journal of Oil Palm (IJOP) is an online and print mode, a peer-reviewed research journal published by Indonesian Oil Palm Society (Masyarakat PerkelapaSawitan Indonesia, MAKSI), it provides a global publication platform for researcher, scholars, academicians, professionals and students engaged in research in oil palm industries. The main aim of IJOP is to become the world’s leading journal in oil palm that is preferred and trusted by the community through publishing authentic, peer-reviewed and scientifically developed research articles of international caliber. The journal is published three times in a year, 6-10 papers per publication, and the language of the journal is English. JOURNAL SCOPE IJOP publishes research papers in the felds of soil and crop fertilizer application, seedling preparation, cover crop management, leaf pruning, weed control, control of pest and diseases, insect pollinators management, water management, intercropping, cattle oil palm integration, environmental studies, harvesting technology, IT remote sensing GPS application, mechanization, sustainability standards, policy studies, social and economic studies, smallholders empowerment, palm oil mill improvement, biomass utilization, carbon footprint, water footprint, market studies, refinery, food and nutrition technology (oleofood, food safety, pharmaceutical, and nutraceutical) and also management of soil preparation, inorganic and organic safety, oleochemicals, downstream industry development, supply chain, and market studies. The published articles can be in the form of research articles, review paper or short communications which have not been published previously in other journals (except in the form of an abstract or academic thesis/dissertation or presented in seminar/conference).
Articles 3 Documents
Search results for , issue "Vol. 6 No. 1 (2023)" : 3 Documents clear
New Nonwoven Fabrics for Pollination Control Bags for Oil Palm: New pollination bags for oil palm Light, Marnie E; Virk, Daljit Singh; Senior, Hannah
International Journal of Oil Palm Vol. 6 No. 1 (2023)
Publisher : Indonesian Oil Palm Society /IOPS (Masyarakat Perkelapa-sawitan Indonesia /MAKSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35876/ijop.v6i1.85

Abstract

Oil palm hybridisation requires the isolation of inflorescences with pollination control bags (PCBs) for which polyester duraweb® PCBs are used at the Dami Oil Palm Research Station in Papua New Guinea. For widening the choices of nonwoven PCBs we compared the performance of PCBs from three new types of nonwoven fabrics with the standard duraweb® PCB on 9-year-old clonal palms in one of the Dami SUPERFAMILY® seed gardens. The station typically experiences a humid climate and received weekly total rainfall ranging from 53 to 228 mm (total rainfall 1035 mm) during the reproductive phase in March and April 2020, when the trial was conducted. Analyses of variance of a number of traits such as time taken to install the bags, bag intactness, spine damage and water absorption of bags, bunch weight, healthy and total seed number and weight, seed health score, and 100-seed weight were all non-significant. The average number of healthy seeds per bunch was 1120 seeds with mean weight of 376 g per 100 seeds. Blank pollinations showed equal pollen-proofing ability among all bags without any noticeable insect entry. This study, for the first time, has identified three other nonwoven fabric PCBs with no statistical differences from the control duraweb® bags for most of the important traits, and provides new alternatives to reduce the dependency on only one type of fabric which, when in short supply, could adversely affect the plant breeding and seed production programmes.
Volatility and Transmission of Palm Oil Price in The Province of North Sumatera and Bengkulu Province Herdiyanti, Yulia; Sukiyono, Ketut; Irawan, Andi
International Journal of Oil Palm Vol. 6 No. 1 (2023)
Publisher : Indonesian Oil Palm Society /IOPS (Masyarakat Perkelapa-sawitan Indonesia /MAKSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35876/ijop.v6i1.87

Abstract

This study aims to analyze the level of volatility and transmission of palm oil prices in the Rotterdam and Belawan markets as well as the price of palm FFB in the markets of North Sumatera and Bengkulu Provinces. This study uses time series data for 120 months from January 2012 to December 2021. In this study, the data analysis method used to analyze the level of price volatility is Autoregressive Conditional Heteroscedasticity-Generalized Autoregressive Conditional Heteroscedasticity (ARCH-GARCH) and to analyze the level of price transmission is Autoregressive Distributed Lag (ARDL). The results showed that 1) the price volatility level in the Rotterdam and Belawan palm oil markets was high, 2) palm oil price transmission which is perfectly transmitted both in the short term and in the long term only occurs between the Rotterdam palm oil market and the Belawan palm oil market.
Testing of Selection Criteria for Screening of Oil Palm Genotypes Partially Resistant to Ganoderma Boninense in Main-Nursery Azwar, Rasidin; Siregar, Muhammad Mustiqa; Pakpahan, Loly VA; Purba, Bobby
International Journal of Oil Palm Vol. 6 No. 1 (2023)
Publisher : Indonesian Oil Palm Society /IOPS (Masyarakat Perkelapa-sawitan Indonesia /MAKSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35876/ijop.v6i1.104

Abstract

Resistance to basal stem rot (BSR) caused by Ganoderma boninense is now one of the main breeding objectives by many oil palm breeders. Many studies reported that resistance to G. boninense is partial or incomplete resistance.Screening at a longer period in main-nursery is also needed to see genetic variation in rate of infection (‘r) among genotypes. The objective of this study was to test several criteria suitable for identifying genotypes to have low infection rate. Two hundreds of DxP crosses between 16 dura lines and three Pisifera palms were made for testing of their resistance to G. boninense in main-nursery. Since G. boninense is a root disease, its effect on root would be direct and selection based on FRW must be very reliable and accurate. Genotypes which had values better than average value were selected as moderately resistant genotypes to G. boninense. The results showed that: (1) there were differences in fastness of infection and severity of the disease; (2) variation in DS among tested crosses increase with time and reach maximum at the 12th MAI; (3) only four selection criteria had significant correlation FRW, namely, FBW (0.74), AUDPC (-0.261), DS (-0.233), ‘r (-0.205); and (4) four selection criteria which gave the closest results to FRW criterion consecutively were FBW (73%), AUDPC (65%), ‘r (64%), DS (63%). It could be concluded that main-nursery screening could identify genotypes with lower ‘r value. AUDPC and ‘r values are suitable to be used as selection criteria for selecting oil palm genotypes partially resistant to G. boninense in main- nursery screening.

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