Vol. 4 No. 02 (2025): Research Articles July 2025

Articles

• Effect of Application Timing and Concentration of Biosaka on the Growth and Yield of Organic Lowland Rice

  Jeanne Martje Paulus, Langimanapa S Demmassabu, Jemmy Najoan, Annatje E.B Inkiriwang

  308-315

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  DOI : https://doi.org/10.47709/joa.v4i02.6882

• Identification of Arbuscular Mycorrhazal Fungi on Chili Pepper Plants (Capsicum Frutescens) in Sarilamak Village, Harau District

  Hawari Hawari, Yefriwati Yefriwati, Darmansyah Darmansyah, Agung Ramadhano

  300-307

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  DOI : https://doi.org/10.47709/joa.v4i02.6813

• Optimization of Drip Irrigation System to Improve Water Use Efficiency and Tomato Crop Productivity

  Pratiwi Mulianda, Annisa Purnamasari Damanik, Satria Adi Surya

  296-299

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  DOI : https://doi.org/10.47709/joa.v4i02.6810

• Effect of Extraction Time on the Yield and Color Characteristics of White Pepper (Piper Nigrum L.) Oleoresin

  Annisa Purnamasari Damanik, Satria Adi Surya, Pratiwi Mulianda

  288-295

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  DOI : https://doi.org/10.47709/joa.v4i02.6793

• Optimization of Lead Removal from Aquoeus Solution Using Iron Oxide-Modified Alumina Adsorbent Incorporating Sapodilla Leaf Extract

  Annisa Ulhusna, Susilawati Toemen, Nurrulhidayah Salamun

  273-287

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  DOI : https://doi.org/10.47709/joa.v4i02.6800

• The Relationship between Entrepreneurial Characteristics and Business Performance of SMEs Producing Keripik Balado in Bukittinggi City

  Pinta Aftaprilia Rizki Ananda, Reza Mardhiyah Amir

  257-272

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  DOI : https://doi.org/10.47709/joa.v4i02.6799

• Application of Capillary Irrigation Systems on Land (Paddy Field Soil, Field Soil and Farm Soil)

  Syiffa Rahmania, Aldo Deska Candra, Zulfakri Zulfakri, Satria Adi Surya

  250-256

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  DOI : https://doi.org/10.47709/joa.v4i02.6789

• Modification of Power Sprayer as a Pest Spraying Tool for Citrus Plants (Citrus sp.)

  Satria Adi Surya, Pratiwi Mulianda, Annisa Purnamasari Damanik, Wathri Fitrada, Syiffa Rahmania

  241-249

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  DOI : https://doi.org/10.47709/joa.v4i02.6784

• The Effect of Growth and Root Nodules of Mucuna Bracteata on Various Planting Media Compositions

  Roso Samiarjo, Sri Manu Rochmiyati, Githa Noviana

  233-240

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  DOI : https://doi.org/10.47709/joa.v4i02.6686

• Solanum Melongena L. Reaction to Combining Doses of PGPR Imperata Cylindrica and Cow Manure: Growth and Yield

  Daniela Hapsari Nareswari, Elisabeth Nanik Kristalisasi, Fani Ardiani

  223-232

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  DOI : https://doi.org/10.47709/joa.v4i02.6663

• Corn Milk Yoghurt: Nutritional Composition Analysis Based On Fermentation Starter Variatons

  Abd Rukman Burhan, Firmansyah Firmansyah

  210-222

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  DOI : https://doi.org/10.47709/joa.v4i02.6700

• Effect of Golden Snail-Based Local Microorganisms on the Growth and Yield of Baby Corn

  Nur Aida Yanti, Syaifuddin Anwar, Sudirman H, Dwi Wahyuni Haswin; Muhammad Nasrul

  203-209

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  DOI : https://doi.org/10.47709/joa.v4i02.6688

• Evaluation of Agronomic Traits of Rice in Rice-Fish System Using Correlation and PCA

  Kasmiati Kasmiati, Muhammad Nasrul

  195-202

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  DOI : https://doi.org/10.47709/joa.v4i02.6687

• Organic Fertilizer Efficiency for Food Security Support in Secanggang, Langkat

  Mukti Hakim, Henny Wahyuni, Nazwa Dwi Putri, Monica Noviana

  181-194

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  DOI : https://doi.org/10.47709/joa.v4i02.6396

• Biopesticide of the Mixture of Crescentia Cujete and Calotropis Gigantea to Control Spodoptera Frugiperda J.E Smith (Lepidoptera: Noctuidae)

  Elsa Sulastri, Niken Nur Kasim, Asia Arifin, Sylvia Sjam

  170-180

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  DOI : https://doi.org/10.47709/joa.v4i02.6650

• Economic Efficiency of Smallholders Oil Palm Plantations in Lubuk Barumun District Padang Lawas Regency, North Sumatera

  Jones Simatupang, M. Akbar Siregar, Mhd. Buhari Sibuea

  158-169

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  DOI : https://doi.org/10.47709/joa.v4i02.6545

• Identification of Pests and Diseasesof Cocoa Plant (Theobrama Cacao L) and the Level of Attacks in Metun Village

  Tati Hariyati, Marlan Usmani Putra, Jinni Febrianti

  146-157

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  DOI : https://doi.org/10.47709/joa.v4i02.6374

• The Role of Digital Marketing through Social Networks on the Sales of Agricultural Products in "Pajak Horas"

  Diana Florenta Butar-butar, Ben Setiawan Barus, Nurhadida Nasution

  137-145

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  DOI : https://doi.org/10.47709/joa.v4i02.6541

• Designing Village Food Security: SWOT–QSPM Strategy for Sumber Harjo Farmers' Group

  Dwi Wijayanti, Farhan Akmala Putra, Agus Setiadi

  126-136

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  DOI : https://doi.org/10.47709/joa.v4i02.6563

• Utilization of Beauveria Bassiana Bals. -Criv. Fungus to Control Coffee Berry Borer (Hypothenemus Hampei F.) Invitro

  Windi Ely Syahfitri, Kabul Warsito, Andi Setiawan

  115-125

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  DOI : https://doi.org/10.47709/joa.v4i02.6542

• Effectiveness of Eco-Enzyme for Increasing Growth and Production of Shallot from Vegetative Seeds

  Novisrayani Kesmayanti, Ruli Joko Purwanto, Edy Romza, Ummi Kalsum, Widya Irmawati, Kartika Putri

  106-114

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  DOI : https://doi.org/10.47709/joa.v4i02.6442

• Frond Base Fracture and Oil Palm Production: Quantitative Evidence from Indonesia

  Adhitya Kurniadhi; Theofilus Tejo Murti; Wandha Atmaka Aji , Yulio Kristian Tinduh, Indra Kurniawan, Nurcahyono Nurcahyono

  97-105

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  DOI : https://doi.org/10.47709/joa.v4i02.6399

• Tomato (Solanum Lycopersicum) Growth and Production Response On the Provision of Goat Manure and Trichoderma

  Umi Isnatin, Parwi Parwi, Use Etica, Rudi Bintaro

  87-96

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  DOI : https://doi.org/10.47709/joa.v4i02.6156

• Coffee Product Development Strategy at MSME Jagad Raye Using the Canvas Business Model Method

  Desta Ria Erika

  79-86

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  DOI : https://doi.org/10.47709/joa.v4i02.5978