REVIEW ARTICLE
Vol. 35 (2) June 2023, p. 193-216

OIL PALM ECONOMIC PERFORMANCE IN MALAYSIA AND R&D PROGRESS IN 2022


DOI: https://doi.org/10.21894/jopr.2023.0028  |   Published Online: 28 June 2023
FULL TEXT  |  DOWNLOAD PDF
REVIEW ARTICLE
Vol. 35 (4) December 2023, p. 555-581

PROSPECTS AND STATE-OF-THE-ART IN PRODUCTION OF BIO-BASED SUCCINIC ACID FROM OIL PALM TRUNK


DOI: https://doi.org/10.21894/jopr.2023.0003  |   Published Online: 31 January 2023
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 40-50

INITIAL CHARACTERISATION OF Metarhizium anisopliae CPMa1502 FOR THE DEVELOPMENT OF A BIOPESTICIDE AGAINST THE OIL PALM FRUIT SCRAPER Demotispa neivai (Coleoptera: Chrysomelidae)


DOI: https://doi.org/10.21894/jopr.2022.0076  |   Published Online: 9 December 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 51-62

FISH SPECIES RICHNESS, THEIR IMPORTANCE AND CONSERVATION STATUS IN TROPICAL OIL PALM AGROECOSYSTEM OF TERENGGANU, PENINSULAR MALAYSIA


DOI: https://doi.org/10.21894/jopr.2022.0077  |   Published Online: 13 December 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 63-74

ENDOGENOUS HORMONES FROM THE YOUNG LEAVES OF OIL PALM (Elaeis guineensis Jacq.): A RESPONSE TO In Vitro CALLUS AND EMBRYOID INDUCTION


DOI: https://doi.org/10.21894/jopr.2023.0002  |   Published Online: 20 January 2023
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 582-595

PHENOTYPIC VARIABILITY OF Elaeis oleifera GERMPLASM REVEALED BY PRINCIPAL COMPONENT AND CLUSTER ANALYSES


DOI: https://doi.org/10.21894/jopr.2022.0054  |   Published Online: 6 September 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 75-81

AN EXPERIMENTAL STUDY ON THE EFFICIENCY OF A PALM MESOCARP SEPARATION MACHINE


DOI: https://doi.org/10.21894/jopr.2023.0008  |   Published Online: 6 March 2023
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 82-93

ARTHROPOD FAUNA OF OIL PALM INFLORESCENCE (Elaeis guineensis), WITH NOTES ON THEIR ECOLOGICAL ROLES IN A PLANTATION IN TERENGGANU, MALAYSIA


DOI: https://doi.org/10.21894/jopr.2023.0013  |   Published Online: 15 March 2023
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 94-103

OIL PALM (Elaeis guineensis) SEED CHARACTERISTICS AND GERMINATION POTENTIAL AS INFLUENCED BY MATURITY STAGE AND FRUITLET POSITION ON A BUNCH


DOI: https://doi.org/10.21894/jopr.2023.0014  |   Published Online: 20 March 2023
FULL TEXT  |  DOWNLOAD PDF
REVIEW ARTICLE
Vol. 35 (3) September 2023, p. 375-390

FUNGI IN BIOLOGICAL MANAGEMENT OF PLANT DISEASES: CURRENT AND FUTURE PERSPECTIVE


DOI: https://doi.org/10.21894/jopr.2022.0061  |   Published Online: 23 September 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 596-606

METABARCODING IN DIET ASSESSMENT OF ADULT PARASITOID SPECIES, Dolichogenidea metesae (HYMENOPTERA: BRACONIDAE) TOWARDS ITS CONSERVATION AND MANAGEMENT IN THE OIL PALM PLANTATION


DOI: https://doi.org/10.21894/jopr.2022.0070  |   Published Online: 7 November 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 607-615

DYNAMICS OF SUCROSE PHOSPHATE SYNTHASE AND FRUCTOSE BISPHOSPHATE SYNTHASE IN OIL PALMS FERTILISED WITH LOW NITROGEN [(NH2)2CO] DOSE WITH NPPTNBPT COATING IN RED-YELLOW PODZOLIC SOIL


DOI: https://doi.org/10.21894/jopr.2022.0074  |   Published Online: 21 November 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 616-625

GEOSTATISTICAL ASSESSMENT OF HEAVY METALS AND NUTRIENTS AVAILABILITY IN SOIL OF OIL PALM PLANTATION AFFECTED BY BAUXITE MINING


DOI: https://doi.org/10.21894/jopr.2022.0079  |   Published Online: 22 December 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 639-652

THERMAL ANALYSIS AND NON-ISOTHERMAL THERMOGRAVIMETRIC KINETICS ANALYSIS USING COATS-REDFERN METHOD OF A TORREFIED EMPTY FRUIT BUNCHES


DOI: https://doi.org/10.21894/jopr.2023.0011  |   Published Online: 9 March 2023
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 128-139

COMPARATIVE STUDIES ON CURE CHARACTERISTICS AND MECHANICAL PROPERTIES OF OIL PALM BIOMASS FILLED NATURAL RUBBER COMPOSITES


DOI: https://doi.org/10.21894/jopr.2023.0009  |   Published Online: 6 March 2023
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 668-681

OPTIMISATION OF FAME PRODUCTION FROM WASTE COOKING PALM OIL WITH KOH CATALYST SUPPORTED ON PALM KERNEL SHELLS ASH (PKSA) USING RESPONSE SURFACE METHODOLOGY (RSM)


DOI: https://doi.org/10.21894/jopr.2023.0005  |   Published Online: 8 February 2023
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 36 (1) March 2024, p. p. 146-157

DEVELOPMENT AND IN-HOUSE VALIDATION OF MULTI-RESIDUE METHOD FOR TRIAZOLE FUNGICIDES IN PALM KERNEL, MESOCARP AND RAW AGRICULTURE COMMODITY (RAC) USING GAS CHROMATOGRAPHY–MICRO ELECTRON CAPTURE DETECTOR (GC-μECD)


DOI: https://doi.org/10.21894/jopr.2023.0018  |   Published Online: 13 April 2023
FULL TEXT  |  DOWNLOAD PDF
REVIEW ARTICLE
Vol. 35 (3) September 2023, p. 391-405

OIL PALM WATER REQUIREMENT AND THE NEED FOR IRRIGATION IN DRY MALAYSIAN AREAS


DOI: https://doi.org/10.21894/jopr.2022.0052  |   Published Online: 24 August 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 682-693

ECONOMICAL STUDY OF BIO-BASED POLYBUTYLENE SUCCINATE PRODUCTION FROM OIL PALM BIOMASS


DOI: https://doi.org/10.21894/jopr.2023.0001  |   Published Online: 18 January 2023
FULL TEXT  |  DOWNLOAD PDF
REVIEW ARTICLE
Vol. 35 (2) June 2023, p. 217-235

MEMBRANE TECHNOLOGIES IN THE OIL INDUSTRY AND THEIR POTENTIAL APPLICATION FOR THE RECOVERY OF PHYTONUTRIENTS FROM PALM OIL


DOI: https://doi.org/10.21894/jopr.2022.0069  |   Published Online: 26 October 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 236-246

EFFECT OF METHYLENE DIPHENYL DIISOCYANATE INDEX ON PHYSICOMECHANICAL AND MORPHOLOGICAL PROPERTIES OF PALM OLEIN-BASED VISCOELASTIC POLYURETHANE FOAMS


DOI: https://doi.org/10.21894/jopr.2022.0023  |   Published Online: 9 May 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 694-712

CHARACTERISTICS OF SUNFLOWER WAX, CARNAUBA WAX AND BEESWAX IN PALM SUPEROLEIN BLENDED OIL


DOI: https://doi.org/10.21894/jopr.2022.0055  |   Published Online: 6 September 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (3) September 2023, p. 456-466

INTEGRATED MICROWAVE-STEAM STERILISATION OF LOOSE OIL PALM FRUITS: ENHANCED HEATING UNIFORMITY, CRUDE PALM OIL QUALITY AND ENERGY SAVINGS


DOI: https://doi.org/10.21894/jopr.2022.0060  |   Published Online: 22 September 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (3) September 2023, p. 476-490

GENETIC VARIABILITY OF MPOB-CAMEROON OIL PALM GERMPLASM BASED ON MORPHOLOGICAL TRAITS USING MULTIVARIATE ANALYSIS


DOI: https://doi.org/10.21894/jopr.2022.0038  |   Published Online: 8 July 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (4) December 2023, p. 725-737

SYNTHESIS AND PHYSICOCHEMICAL PROPERTIES OF ESTOLIDE ESTER AND AMIDE MADE FROM USED COOKING OIL AS BIO-LUBRICANT


DOI: https://doi.org/10.21894/jopr.2022.0064  |   Published Online: 3 October 2022
FULL TEXT  |  DOWNLOAD PDF
REVIEW ARTICLE
Vol. 35 (1) March 2023, p. 1-22

IMPACT OF Elaeidobius kamerunicus (Faust) INTRODUCTION ON OIL PALM FRUIT FORMATION IN MALAYSIA AND FACTORS AFFECTING ITS POLLINATION EFFICIENCY: A REVIEW


DOI: https://doi.org/10.21894/jopr.2022.0021  |   Published Online: 21 April 2022
FULL TEXT  |  DOWNLOAD PDF
REVIEW ARTICLE
Vol. 34 (4) December 2022, p. 591-607

TREATED OIL PALM FROND AND ITS UTILISATION AS AN IMPROVED FEEDSTUFF FOR RUMINANTS – AN OVERVIEW


DOI: https://doi.org/10.21894/jopr.2021.0041  |   Published Online: 14 October 2021
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 320-329

A FIELD EVALUATION ON FUNGICIDES APPLICATION TO CONTROL UPPER STEM ROT (USR) DISEASE IN OIL PALM CAUSED BY Ganoderma spp.


DOI: https://doi.org/10.21894/jopr.2022.0037  |   Published Online: 6 July 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 33-44

ASSESSING ELECTRICAL AND PHYSICOCHEMICAL PERFORMANCE OF CHEMICALLY MODIFIED PALM OIL AS AN ALTERNATIVE TRANSFORMER LIQUID


DOI: https://doi.org/10.21894/jopr.2022.0042  |   Published Online: 27 July 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (3) September 2023, p. 528-537

PROTEOMICS OF OIL PALM SOMATIC EMBRYOGENESIS REVEALS THE DIFFERENTIALLY EXPRESSED PROTEINS AS CANDIDATES FOR BIOMARKER DEVELOPMENT


DOI: https://doi.org/10.21894/jopr.2022.0062  |   Published Online: 28 September 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 330-339

SUSTAINING BEEHIVE-FENCE TO REDUCE ELEPHANT ENCROACHMENT IN OIL PALM PLANTATION


DOI: https://doi.org/10.21894/jopr.2022.0050  |   Published Online: 23 August 2022
FULL TEXT  |  DOWNLOAD PDF
REVIEW ARTICLE
Vol. 34 (2) June 2022, p. 185-218

OIL PALM ECONOMIC PERFORMANCE IN MALAYSIA AND R&D PROGRESS IN 2021


DOI: https://doi.org/10.21894/jopr.2022.0036  |   Published Online: 30 June 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 58-74

SPATIAL DISTRIBUTION OF Rattus SPECIES (RODENTIA: MURIDAE) IN OIL PALM PLANTATIONS OF PENINSULAR MALAYSIA WITH SPECIES VERIFICATION USING CYTOCHROME OXIDASE I (COI) GENE


DOI: https://doi.org/10.21894/jopr.2022.0026  |   Published Online: 20 May 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 121-132

COMPARISON OF REAL-TIME PCR, CONVENTIONAL PCR AND RT-LAMP FOR THE DETECTION OF COCONUT CADANG-CADANG VIROID VARIANT IN OIL PALM


DOI: https://doi.org/10.21894/jopr.2022.0030  |   Published Online: 2 June 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 133-146

DESIGNING gRNAs TARGETING OIL PALM PHYTOENE DESATURASE (EgPDS) GENE AND CONSTRUCTION OF VECTORS FOR OIL PALM CRISPR/CAS9 STUDY


DOI: https://doi.org/10.21894/jopr.2022.0032  |   Published Online: 10 June 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 622-628

Strategus aloeus (COLEOPTERA: SCARABAEIDAE) DAMAGE AND ITS RELATIONSHIP WITH RAINFALL AND HYBRID OIL PALM AGE IN COLOMBIA


DOI: https://doi.org/10.21894/jopr.2022.0009  |   Published Online: 31 January 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (2) June 2023, p. 365-375

FIELD EFFICACY OF ANTICOAGULANT RODENTICIDES AGAINST RAT INFESTATION IN OIL PALM PLANTATION


DOI: https://doi.org/10.21894/jopr.2022.0044  |   Published Online: 5 August 2022
FULL TEXT  |  DOWNLOAD PDF
SHORT COMMUNICATION
Vol. 35 (2) June 2023, p. 376-384

CROSS-VALIDATION AND RECEIVER OPERATING CHARACTERISTIC ANALYSES FOR OIL PALM LEAF METABOLOME DATASET


DOI: https://doi.org/10.21894/jopr.2022.0046  |   Published Online: 8 August 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 157-167

PATHOGENESIS-RELATED PROTEIN INDUCTION IN Streptomyces GanoSA1-TREATED OIL PALM SEEDLINGS DURING EARLY INFECTION BY Ganoderma boninense


DOI: https://doi.org/10.21894/jopr.2022.0034  |   Published Online: 17 June 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 35 (1) March 2023, p. 168-184

TRANSPIRATION OF OIL PALM (Elaeis guineensis Jacq.) BASED ON SAP FLOW MEASUREMENT: THE RELATION TO SOIL AND CLIMATE VARIABLES


DOI: https://doi.org/10.21894/jopr.2022.0035  |   Published Online: 29 June 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 643-656

OIL PALM SSR RESOURCE INTERFACE (OPSRI) – WEB-BASED BIOINFORMATIC ANALYSIS PIPELINE FOR SSR MINING


DOI: https://doi.org/10.21894/jopr.2022.0008  |   Published Online: 28 January 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 668-677

MECHANICAL DESIGN ANALYSIS AND IMPROVEMENT OF ALUMINIUM ALLOY CANTAS SICKLE BLADE USING FINITE ELEMENT METHOD SIMULATION


DOI: https://doi.org/10.21894/jopr.2022.0006  |   Published Online: 28 January 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 678-685

CHARACTERISATION OF PALM PYROLIGNEOUS ACID AND ITS EFFECTIVENESS AS ANTIFUNGAL AGENT FOR OIL PALM TRUNK


DOI: https://doi.org/10.21894/jopr.2022.0007  |   Published Online: 28 January 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 699-709

PROPERTIES OF SOLID POLYURETHANES MADE FROM PALM OLEIN-BASED POLYOLS PREPARED WITH VARIOUS TYPES OF NUCLEOPHILES


DOI: https://doi.org/10.21894/jopr.2022.0015  |   Published Online: 2 March 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 427-438

NEW INSIGHTS INTO THE PHYLOGEOGRAPHY OF THE OIL PALM PEST, Metisa plana TOWARDS ITS MANAGEMENT CONTROL


DOI: https://doi.org/10.21894/jopr.2021.0050  |   Published Online: 3 December 2021
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (4) December 2022, p. 731-740

ASSOCIATION OF FATTY ACIDS AND POLAR COMPOUND FRACTIONS WITH ACRYLAMIDE FORMATION DURING INTERMITTENT FRYING


DOI: https://doi.org/10.21894/jopr.2022.0018  |   Published Online: 18 March 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 439-452

DETERMINATION OF RELIABLE REFERENCE GENES FOR REVERSE TRANSCRIPTION QUANTITATIVE REAL-TIME PCR FROM OIL PALM TRANSCRIPTOMES


DOI: https://doi.org/10.21894/jopr.2022.0002  |   Published Online: 17 January 2022
FULL TEXT  |  DOWNLOAD PDF
RESEARCH ARTICLE
Vol. 34 (3) September 2022, p. 488-496

FEASIBILITY STUDY OF OIL PALM HARVESTING USING PULSE FIBRE LASER SYSTEM WITH DIFFERENT LENSES


DOI: https://doi.org/10.21894/jopr.2022.0005  |   Published Online: 28 January 2022
FULL TEXT  |  DOWNLOAD PDF