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Latest in Regular Issue

Journal of Tropical Agricultural Science Vol. 49 (2) Apr. 2026

Articles

Morphological Variation of Liberica Coffee (Coffea liberica Hiern) in Kalipuro Sub-district, Banyuwangi Regency

Naila Izzatul Mukhoyyaroh, Rodiyati Azrianingsih, Estri Laras Arumingtyas, and Luchman Hakim

https://doi.org/10.47836/pjtas.49.2.01

Full Article

Analogue Rice from Amorphophallus muelleri and Potato with Enhanced Nutritional Properties: Lower Glycemic Index and Higher Fibre Content

Kisroh Dwiyono, Nor Elliza Tajidin, Maman Abdurachman Djauhari, Elisa Azura Azman, Nur Syahirah Abdul Rashid, Viktor Vekky Ronald Repi, and Noverita

https://doi.org/10.47836/pjtas.49.2.02

Full Article

The Influence of Zinc and Boron Application on Growth, Yield, Seed Quality, and Nutrient Content in Non-hybrid Corn

Agustiansyah, Paul Benyamin Timotiwu, Eko Pramono, Galuh M. Pramudyano, and David Chandra

https://doi.org/10.47836/pjtas.49.2.03

Full Article

A Second Life for Agro-Industrial Residues: Edible Coating from Roselle Decoction Residues for Preserving Wax Apple Quality and Antioxidant Properties

Nur Amirah Yusoff, Fauziah Tufail Ahmad, Aidilla Mubarak, Razifah Mohd Razali, and Husni Hayati Mohd Rafdi

https://doi.org/10.47836/pjtas.49.2.04

Full Article

Behavioural Response of Cabbage White Butterfly (Pieris rapae) as Affected by Different Levels of Deltamethrin Insecticide

Jackie Lou F. Bagote, Jenny S. Palor, Angelo DG. Rullepa, Mark Argyll D. Tambaoan, and Schereid Joi N. Ugnasi

https://doi.org/10.47836/pjtas.49.2.05

Full Article

Storage Reserve Composition and Storage Behaviour of Amorphophallus muelleri Blume Seed

Siti Fadhilah, Eny Widajati, Satriyas Ilyas, Endah Retno Palupi, and Abdul Qadir

https://doi.org/10.47836/pjtas.49.2.06

Full Article

Synergistic Application of Marine-derived Actinomycetes and Microalgae to Enhance Rice Seedling Growth and Salinity Stress Tolerance

Alimuddin Ali, Muhammad Junda, Nur Haedar, Hasliana, Didik Imam Sakirin, and Herlina Rante

https://doi.org/10.47836/pjtas.49.2.07

Full Article

Using spectral vegetation indices to study the growth of Opuntia ficus-indica and identify suitable production sites in the southwestern region of Saudi Arabia

Abdulmalek A. Muharram1, Elkamil Tola, Rashid S. Al-Obeed, Fahad Al-Qurainy, Khalid A. Al-Gaadi, Rangaswamy Madugundu, Ahmed M. Zeyada, Mohamed K. Edrris, Nabil Mohammed, and Abdulhakim A. Aldubai

https://doi.org/10.47836/pjtas.49.2.08

Full Article

Early Performance Results of Polyhalite on Newly Planted Oil Palms

Ng Fang Wen, Siti Hajar, and Lim Jing Jie

https://doi.org/10.47836/pjtas.49.2.09

Full Article

Valorisation of Kopyor Coconut Waste for Fatty Acid Production by Yarrowia lipolytica

Firda Dimawarnita, Muhammad Fayyadh Altamis Erwinsyah, Puspo Edi Giriwono, Yora Faramitha, Irma Kresnawaty, Urip Perwitasari, Titin Haryati, and Ario Betha Juanssilfero

https://doi.org/10.47836/pjtas.49.2.10

Full Article

Phenological Growth Stages of Artocarpus odoratissimus using the Extended BBCH Scale and its Applications in Determining Optimal Harvest Maturity

Isniti Richard, Halifah Afiza Ismail, Shiamala Devi Ramaiya, Gerevieve Bangi Sujang, Nuratika Tamimi Sheikh Mohamed, and Kundan Kishore

https://doi.org/10.47836/pjtas.49.2.11

Full Article

Enhancing the Physical Properties of Egg Custard-based Diets through Feed Supplements to Improve the Growth Performance of Macrobrachium rosenbergii Larvae

Riyad Taguemount, Jarunan Pratoomyot, Andrew P Shinn, and Rasina Rasid

https://doi.org/10.47836/pjtas.49.2.12

Full Article

Susceptibility: The Role of Climatic, Environmental, Topographic, and Anthropogenic Variables

Yee Jian Chew, Shih Yin Ooi, Ying Han Pang, and Zheng You Lim

https://doi.org/10.47836/pjtas.49.2.13

Full Article

Morphological Differences of Experimental Hybrids and Check Varieties of High-Yielding Grain Maize

Siti Norfaroha Ariffin1, Juju Nakasha Jaafar1*, Ghizan B. Saleh1, Nazatul Shima Naharudin1, and Samsuri A. Wahid2 1 Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia 2 Department of Soil Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

https://doi.org/10.47836/pjtas.49.2.14

Full Article

Unravelling the Diversity of Azolla cristata from the Progo and Opak River Basins based on Inter-Simple Sequence Repeat Marker and Morphological Analysis

Nafiah Khoirunnisa, Adib Fakhruddin Yusuf, Aji Sukma Iqbal Najibulloh3, Abdul Razaq Chasani4, Rina Sri Kasiamdari4, and Budi Setiadi Daryono2*

https://doi.org/10.47836/pjtas.49.2.15

Full Article

Reproduction Technology for Sustainable Portunid Crab’s Aquaculture: A Review

Ariffin Hidir, Mohd Amran Aaqillah-Amr, and Mhd Ikhwanuddin

https://doi.org/10.47836/pjtas.49.2.16

Full Article

Selangor Public Perceptions of Neutering and Preventive Health Measures for the Health of Cats and Dogs

Nur Athirah Nabila Jamaluddin, Michelle Fong Wai Cheng, Tengku Rinalfi Putra Tengku Azizan, Muhd Khaizer Omar,

https://doi.org/10.47836/pjtas.49.2.17

Full Article

The Ecology and Conservation of Orchids in Ultramafic Habitats of Kinabalu Park, Sabah, Malaysia

Harniza Izzati Razali and Siti Fatimah Md.-Isa* Faculty of Tropical Forestry, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia

https://doi.org/10.47836/pjtas.49.2.18

Full Article

A Review on the Optimisation of Enzymatic Treatment in Tropical Fruit Juice: Impacts on Physicochemical and Functional Properties

Hasdarahayu Mohd Hassan, Mohd Azrie Awang, Ahmad Hazim Abdul Aziz, Asep Awaludin Prihanto, Abdul Aziz Jaziri, and Siti Faridah Mohd Amin

https://doi.org/10.47836/pjtas.49.2.19

Full Article

Abscisic Acid Exogenous Spraying to Improve Sorghum (Sorghum bicolor (L.) Moench) Genotypes for Tolerance to Abiotic Stress

Abdullah Amar Saleh, Yaseen Obaid Noori Ahmed Sharif, and Ali Hussein Raheem

https://doi.org/10.47836/pjtas.49.2.20

Full Article

Diversity and Ecological Insights of Fruit Bats in Durian Orchards of Sarawak, Malaysian Borneo

Sara Dalton Saging, Muhd Amsyari Morni, Wong Sin Yeng, Abd Rahman Mohd-Ridwan, Faisal Ali Anwarali Khan, and Jayasilan Mohd-Azlan

https://doi.org/10.47836/pjtas.49.2.21

Full Article

Phylogeography and Genetic Structure of the Giant Freshwater Prawn (Decapoda: Palaemonidae) in Peninsular Malaysia using Mitochondrial DNA Analysis

Dania Aziz, Afrina Irdina Roszizul Kahairi, Athirah Mohd Bakri, Nur Syuhada Mohd Fuad, Izzah ‘Atirah Mohd Hir Tarmidi1, Yuzine Esa, Md. Lifat Rahi, and Muhammad Dailami

https://doi.org/10.47836/pjtas.49.2.22

Full Article

Application of Multi-Level Factorial Design in Optimisation of Ultrasound-assisted Extraction (UAE) Condition from Erythrina variegata L. Leaves on Antioxidant Activities

Nur Fazira Abdul Rahim, Norhayati Muhammad, Fazleen Izzany Abu Bakar, Mohd Fadzelly Abu Bakar, Siti Fatimah Sabran, Furzani Pa’ee, Balkis A. Talip, Ain Zamira Muhamad Zamri, Rozaliana Ab Karim, Nur Zainatul Nadra Zainol, Aliff Hisyam A Razak, and Rabiah Ahmad

https://doi.org/10.47836/pjtas.49.2.23

Full Article

Life Cycle and Feeding Behaviour of Rice Stem Borer Species in Southeast Asian Regions' Paddy Fields

Aisyah Pratiwi Suryanto Sugian, Patricia King Jie Hung, Muhamad Azmi Mohammed, Tunung Robin, Leong Sui Sien, Freddy Yeo Kuok San, Zakry Fitri Ab. Aziz, Noorasmah Saupi, Shiamala Devi Ramaiya, Ribka Alan, Adrian Daud, Anita Rosli, Philip Lepun, Zahora Ismail, Sivasangar Seenivasagam, and Suziana Hassan

https://doi.org/10.47836/pjtas.49.2.24

Full Article

Effect of Boron Fertilisation and Trisodium Phosphate (TSP) Priming on Fruit and Seed Quality of GM-2 Tomato (Solanum lycopersicum L.)

Amira Mufida Zharfa, Rudi Hari Murti, and Budiastuti Kurniasih

https://doi.org/10.47836/pjtas.49.2.25

Full Article

Optimising Glucomannan Production in Amorphophallus oncophyllus by Varying Tuber Size and Fertiliser Source

F. Deru Dewanti, Ramdan Hidayat, Careca Sepdihan Rahmat Hidayatullah, and Oentari Prilaningrum Sutanto

https://doi.org/10.47836/pjtas.49.2.26

Full Article

Drought Tolerance of Five Selected Rice (Oryza sativa L.) Genotypes based on Morphological Physio-biochemical and Phenotypic Polymorphism

Noor Asmaa Awang, Mohd Razi Ismail, and Zulkarami Berahim