Category: 2026

(30 Articles)

REVIEW ARTICLE
Vol. 38 (2) June 2026, p. 201-228

OIL PALM ECONOMIC PERFORMANCE IN MALAYSIA AND R&D PROGRESS IN 2025

GHULAM KADIR AHMAD PARVEEZ1*; CHIEW WEI PUAH1; SAY PENG TAN1; ZULKIFLI YAAKUB1; HALIZA ABD. AZIZ1; MOHAMAD AZRI SUKIRAN1; PUVANESWARI MEGANATHAN1; HUMAIRA MAT TAIB1 and RAMLE MOSLIM1
DOI: https://doi.org/10.21894/jopr.2026.0029  |   Published Online: 26 June 2026
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 362-375

PHOTOCATALYTIC DEGRADATION OF ANAEROBIC TREATED PALM OIL MILL EFFLUENT BY MODIFIED ZnO WITH LEMONGRASS AND KINETIC STUDIES

DILAELEYANA ABU BAKAR SIDIK1*; NUR HANIS HAYATI HAIROM2,3; AIDA MUHAMMAD1; NORASIKIN OTHMAN4,5; NORELA JUSOH4; SITI FATIMAH MOHD NOOR1; HAFSA MOHAMMAD NOOR1 and DZULHILMI KAMARUDIN SOHAMI6
DOI: https://doi.org/10.21894/jopr.2025.0037  |   Published Online: 23 July 2025
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 346-361

EVALUATION OF LAMINATED PANELS FROM SEMANTAN BAMBOO AND OIL PALM TRUNKS FOR SUSTAINABLE COMPOSITE MANUFACTURING

BALKIS FATOMER A. BAKAR1,2*; YAP XIA JIAN1; NURUL AIDA OTHMAN1; AISYAH HUMAIRA ALIAS3; ALIA SYAHIRAH YUSOF4 and MOHD KHAIRUN ANWAR UYUP4
DOI: https://doi.org/10.21894/jopr.2025.0032  |   Published Online: 8 July 2025
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 307-315

IMPROVING OIL PALM BREEDING EFFICIENCY VIA MIXED POLLINATION AND PATERNITY DETERMINATION USING SINGLE NUCLEOTIDE POLYMORPHISM (SNP) PANEL

ZULKIFLI YAAKUB1*; SUZANA MUSTAFFA1; MARHALIL MARJUNI1; FATIN MOHD NASIR1; WAN NOR SALMIAH TUN MOHD SALIM1; TING NGOOT CHIN1; JAAP BUNTJER2; JARED ORDWAY2 and RAJINDER SINGH1
DOI: https://doi.org/10.21894/jopr.2025.0026  |   Published Online: 18 April 2025
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 338-345

CHEMICAL PROPERTIES AND BIOCOMPATIBILITY OF MICROCRYSTALLINE CELLULOSE REINFORCED DENTURE BASE RESIN MATERIAL: AN In Vitro STUDY

JACOB JOHN1,6*; AMIRA ALI ABDEL RAHAMAN ALI2; SHANI ANN MANI3; ARIEF CAHYANTO1,7; AEMAN HH ELKEZZA1; FATIHA ISMAIL4 and AIED MOHAMMED ALABASI5
DOI: https://doi.org/10.21894/jopr.2025.0023  |   Published Online: 28 March 2025
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 326-337

STUDY OF THE ANATOMICAL STRUCTURE ALONG THE OIL PALM FRUIT BUNCH STALK AND ITS IMPACT ON CUTTING PRESSURE

AZHAR ARIFF1; CHONG WU YI1*; HARITH AHMAD1; MOHAMMAD FAISAL ISMAIL1; WAN RUSYDIAH WAN RUSIK2; BATRISYIA AHMAD NAZRI3; AMIRUL AL HAFIZ ABDUL HAMID4; HARIKRISHNA KULAVEERASINGAM4; MOHAMMAD ZULFAHMI MOHAMMAD YUSOFF4 and MOHAMMAD SHIRAZ ARIS4
DOI: https://doi.org/10.21894/jopr.2025.0022  |   Published Online: 28 March 2025
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SHORT COMMUNICATION
Vol. 38 (1) March 2026, p. 190-200

GC/Q-TOF-MS-BASED METABOLOMICS: UNVEILING THE TEMPORAL METABOLIC PATHWAYS IN Ganoderma boninense USING PATHWAY ANALYSIS TOOLS

ZAIN NURAZAH1*; NUR AIN ISHAK1; NURUL LIYANA ROZALI1; SHAHIRAH BALQIS DZULKAFLI1; JAYANTHI NAGAPPAN1; SHAMALA SUNDRAM1; ABU SEMAN IDRIS1 and ABRIZAH OTHMAN1
DOI: https://doi.org/10.21894/jopr.2025.0019  |   Published Online: 26 March 2025
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 296-306

TRUE-TO-TYPE VERSION 2 – HIGH RESOLUTION GENOTYPING PLATFORM FOR PARENTAL IDENTIFICATION IN OIL PALM

TING NGOOT-CHIN1; LESLIE LOW ENG-TI1; JAAP BUNTJER2; MEILINA ONG-ABDULLAH1; CHAN PEK-LAN1; ZULKIFLI YAAKUB1; JARED ORDWAY2 and RAJINDER SINGH1*
DOI: https://doi.org/10.21894/jopr.2025.0018  |   Published Online: 25 March 2025
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 250-261

ESTIMATING INSECT PEST CONSUMPTION BY THE ORIENTAL MAGPIE-ROBIN AND YELLOW-VENTED BULBUL IN OIL PALM PLANTATIONS FROM A FEEDING EXPERIMENT

MUHAMMAD SYAFIQ YAHYA1; DZULHELMI MUHAMMAD NASIR2; HELDA TANGINANG3; KAMIL TOHIRAN4; AHMAD AFANDI MURDI4; SYARI JAMIAN5; AHMAD RAZI NORHISHAM1; ALEX M LECHNER6 and BADRUL AZHAR1,7,8*
DOI: https://doi.org/10.21894/jopr.2025.0017  |   Published Online: 19 March 2025
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REVIEW ARTICLE
Vol. 38 (1) March 2026, p. 35-52

PRECISION AGRICULTURE IMPLEMENTATION TO IMPROVE SUSTAINABILITY AND PRODUCTIVITY OF OIL PALM PLANTATIONS IN INDONESIA: A REVIEW

HASBI MUBARAK SUUD1*; ANGGA DEFRIAN2; AGUNG NUGROHO PUSPITO3 and AGUS SUSANTO GINTING4
DOI: https://doi.org/10.21894/jopr.2025.0013  |   Published Online: 5 March 2025
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RESEARCH ARTICLE
Vol. 38 (1) March 2026, p. 155-165

PERFORMANCE OF B10/B20 USAGE IN HEAVY-DUTY DIESEL VEHICLES

DARYL JAY THADDEUS1*; HARRISON LAU LIK NANG1; NURSYAIRAH JALIL1; NUR SULIHATIMARSYILA ABD WAFTI1; ASTIMAR ABDUL AZIZ1; CHENG XINWEI 2; GAN SUYIN 2 and NG HOON KIAT 2
DOI: https://doi.org/10.21894/jopr.2025.0012  |   Published Online: 5 March 2025
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RESEARCH ARTICLE
Vol. 38 (1) March 2026, p. 88-98

EVALUATION OF DIFFERENT SEED DORMANCY BREAKING METHODS INCLUDING ENZYMATIC ASSAYS FOR GERMINATION IMPROVEMENT IN OIL PALM (Elaeis guineensis Jacq.)

MOHD NORSAZWAN GHAZALI1*; UMA RANI SINNIAH1 and PARAMESWARI NAMASIVAYAM2
DOI: https://doi.org/10.21894/jopr.2025.0011  |   Published Online: 3 March 2025
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RESEARCH ARTICLE
Vol. 38 (2) June 2026, p. 262-271

In Planta EFFICACY OF LOCAL Trichoderma ISOLATES AND SELECTED COMMERCIAL BIOLOGICAL AGENTS AGAINST Ganoderma boninense IN OIL PALM

JUMIATI ASIS1; NUR AAINAA HASBULLAH1; MOHAMADU BOYIE JALLOH1; PALANIVELL PERUMAL2,3; PETER MOJIUN2 and MOHD RASHID MOHD RAKIB1*
DOI: https://doi.org/10.21894/jopr.2025.0007  |   Published Online: 19 February 2025
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RESEARCH ARTICLE
Vol. 38 (1) March 2026, p. 174-189

DELVING INTO THE SYNERGISTIC BEHAVIOURS OF TRIBOLOGICAL ADDITIVES IN MINERAL AND VEGETABLE OILS VIA THERMODYNAMIC ANALYSIS

CHUNG-HUNG CHAN1*; AHMAD SYAFIQ AHMAD HAZMI1; NOOR KHAIRIN MOHD1; WEN HUEI LIM1 and SIN YEE GAN1
DOI: https://doi.org/10.21894/jopr.2025.0006  |   Published Online: 19 February 2025
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RESEARCH ARTICLE
Vol. 38 (1) March 2026, p. 147-154

DUAL APPLICATION OF PALM OIL MILL EFFLUENT (POME) AND BENEFICIAL MICROBE ISOLATES FOR Oryza sativa GROWTH UNDER GLASS HOUSE CONDITION

NURUL AIN NAJIHAH MUSA1; NUR MAIZATUL IDAYU OTHMAN1,2*; AIDA SORAYA SHAMSUDDIN3; MAISARAH ABDUL MUTALIB4; NUR ADIBAH ROSLAN1; NUR AZALINA SUZIANTI FEISAL5 and NOR AZMA YUSUF1
DOI: https://doi.org/10.21894/jopr.2025.0004  |   Published Online: 19 February 2025
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RESEARCH ARTICLE
Vol. 38 (1) March 2026, p. 65-77

ANTIFUNGAL ACTIVITY OF ETHANOLIC EXTRACT FROM INDIGENOUS BACTERIUM Bacillus subtilis STRAIN MN704394.1 CULTURE CONTAINING EICOSANE AND ETHYL STEARATE AGAINST Ganoderma boninense

BEDAH RUPAEDAH1*; RAISADIBA PUTRI BOVANI2; INDRI HANDAYANI1; ZHAFIRA AMILA HAQQA1 and CATUR SRIHERWANTO1
DOI: https://doi.org/10.21894/jopr.2024.0058  |   Published Online: 20 December 2024
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RESEARCH ARTICLE
Vol. 38 (1) March 2026, p. 53-64

GENETIC DIVERSITY OF MPOB-ZAIRE OIL PALM (Elaeis guineensis Jacq.) GERMPLASM POPULATION BY MULTIVARIATE ANALYSIS

FATIN MOHD NASIR1; SUZANA MUSTAFFA1; MARHALIL MARJUNI1; WAN NOR SALMIAH TUN MOHD SALIM1 and ZULKIFLI YAAKUB1*
DOI: https://doi.org/10.21894/jopr.2024.0050  |   Published Online: 8 November 2024
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