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Published by Universitas Sumatera Utara
ISSN : 26557576     EISSN : 23564725     DOI : https://doi.org/10.32734/jpt.
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Tropical Agriculture Journal (JPT) is a peer-reviewed online journal of Agriculture Postgraduate Study Program Universitas Sumatera Utara (USU). Journal is a result of research, or scientific reviews of researchers, students and agricultural institutions, and others related to agricultural studies in the tropical region. Published in Indonesian and English language with 3 volumes/year (April, August, December). These articles are indexed by Google Scholar, PKP Indexing, RootIndexing, Portal Garuda, Indonesian Publication Index (Garuda Portal), One Search Perpustakaan Nasional, BASE (Bielefeld Academic Search Engine), and Directory of Research Journal Indexing (DRJI), JPT is member of AJPI (Association of Indonesian Agriculture Journal, and strives to be a means of periodic, accredited, national scientific publications or reputable international publications through.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 377 Documents
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The Effect of Livestock Ownership and Educational Level on the Economic Welfare of Goat Farmers in Kedungbanteng District Krismiwati Muatip; Muhammad Alief Bhesara; Sri Mastuti
Jurnal Online Pertanian Tropik Vol. 12 No. 2 (2025): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v12i2.14318

Abstract

This study aims to examine the number of goats owned and the education levels of breeders in Kedungbanteng District, to assess their economic welfare, and to analyze the influence of livestock numbers and education on the welfare of goat farmers. Kedungbanteng District was selected using purposive sampling due to its relatively high poverty rate in Banyumas Regency. Villages were sampled randomly, representing 50% of the district’s total villages: Beji, Karangnangka, Kedungbanteng, Dawuhan Kulon, Kebocoran, Dawuhan Wetan, and Melung.A total of 77 goat breeders were selected as respondents using the Slovin formula and random sampling. Data were analyzed through quantitative descriptive analysis, NTPRP, and multiple linear regression. The results showed that breeders owned an average of 5.67 goats, had an average of 7.27 years of formal education, and achieved an average welfare level of 1.49. Furthermore, the study found that both the number of livestock owned and the breeders’ education levels significantly influenced their economic welfare.
Effects of Mushroom Baglog-Based Liquid Organic Fertilizer on Pakcoy Growth Putri, Galuh_Septiani; Icha Saldela Martiana; Putri Tasya Wulandari; Ananda Zulaikai
Jurnal Online Pertanian Tropik Vol. 11 No. 2 (2024): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v11i2.15406

Abstract

  Liquid organic fertilizer is an important type of organic fertilizer that can improve soil structure and provide additional nutrients. Liquid Organic Fertilizer (LOF) has several advantages over other fertilizers, including ease of production, long-chain nutrient release, facilitation of photosynthesis, increased nutrient content, and improved soil growth. Organic fertilizers are commonly used in agriculture, especially on cultivated lands. Organic waste is a by-product of non-economic production processes. This study was conducted at Muhammadiyah University of Surakarta, specifically in the greenhouse, over a period of 28 days, from November 29, 2023, to December 27, 2023. A Randomized Complete Block Design (RCBD) was used as the basis for the experiment. For liquid organic fertilizer concentration, three treatments were applied to plants in three pots, each containing two Pakcoy plants (Brassica rapa L.), with LOF irrigation given every nine days. The first treatment served as a control with no LOF application, while the second treatment involved the application of 1 milliliter of LOF diluted in 500 milliliters of water.    
The Potential of Various Composting Materials and Biochar as Soil Amendments to Increase Soil Nitrogen Availability (A Review) Raidasari, Fatharani; Sofyan, Emma Trinurani
Jurnal Online Pertanian Tropik Vol. 12 No. 2 (2025): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v12i2.16864

Abstract

Nitrogen is an essential soil nutrient that is often a limiting factor in agricultural practices due to its tendency to be easily lost from the soil through various natural processes. Maintaining and increasing nitrogen availability in the soil is a primary focus in efforts to increase agricultural productivity. The purpose of this article is to provide information on the potential of various compost and biochar materials as soil amendments. The method used was a literature review to collect data related to compost and biochar. Various sources of compost and biochar contain varying nutrient contents, which have the potential to increase nitrogen availability in the soil. Compost application to the soil contributes to the nitrogen cycle through mineralization and immobilization processes, and nitrogen adsorption by biochar can reduce nitrogen leaching. The application of various types of compost or a combination with biochar is recommended to maintain nutrient balance and improve soil quality. Future research can explore further to determine optimal strategies for compost and biochar application to support more productive and sustainable agriculture.
Impact of Bioameliorants and Trichoderma sp. on Nutrient Availability, Plant Immunity, and Red Chili Productivity. Fathya Dewi Amalia
Jurnal Online Pertanian Tropik Vol. 12 No. 2 (2025): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v12i2.16905

Abstract

The low productivity of chili plants needs to be increased through soil fertility and pest and disease control. The application of bioameliorants (50% biochar, 25% sugarcane blotong compost, 10% dolomite, 10% guano, 2.5% humic acid, and 2.5% biofertilizer) aims to improve the physical, chemical, and biological properties of the soil and enhance nutrient availability. Trichoderma sp. is needed to stimulate growth and induce resistance. The research aims to determine the best interaction and dosage of bioameliorants and Trichoderma sp. on the parameters of phosphate-solubilizing bacteria, available P, plant height, number of leaves, fruit weight, number of fruits per plant, and induced resistance. The research was conducted at the Bale Tatanen Experimental Garden of the Faculty of Agriculture, Universitas Padjadjaran. The research used a Randomized Block Design (RBD) factorial with nine treatments and three repetitions. The treatments included bioameliorants at 0 t ha-1, 3 t ha-1, 6 t ha-1 and Trichoderma sp. at 0 kg ha-1, 8 kg ha-1, and 16 kg ha-1. The results of the application of bioameliorants and the biological agent Trichoderma sp., as well as the control treatment, showed no interaction between treatments. The application of bioameliorants and biological agents showed the best dose in the independent effect of bioameliorant at 6 t ha-1, which increased available P by 86.6% compared to the control. The application of Trichoderma sp. showed the best dose at 16 kg ha-1, which reduced the intensity of leaf curl virus disease by 66.6% compared to the control and reduced the intensity of fruit fly pest attacks at 16 kg ha-1 by 20.5% compared to the control.  
Evaluation of Soil Physicochemical Properties across Distinct Land Use Systems at Bina Widya Campus, Universitas Riau Chairina Fathin Rahmah; Besri Nasrul; Idwar
Jurnal Online Pertanian Tropik Vol. 12 No. 2 (2025): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v12i2.16467

Abstract

Land use is one of the key factors influencing both the physical and chemical properties of soil, including characteristics such as soil color and texture. This study aimed to characterize the physicochemical properties and fertility criteria of soils under different land use types. Five land use categories were selected for investigation: shrubs, grasses, Eucalyptus sp., mixed plantations, and oil palm. Each land use type consisted of three replications. Soil sampling was conducted at five designated points per land use type, with samples collected from a depth of 0–30 cm, resulting in a total of 75 samples. The research was carried out over a three-month period from April to July 2022 using a land survey approach and purposive sampling technique. The observed parameters included soil color, texture, permeability, pH, total nitrogen (N), total phosphorus (P), total potassium (K), organic carbon (C), base saturation, and cation exchange capacity (CEC). The results revealed that the soil color was predominantly black (2.5Y 2/1), with a sandy loam texture. Soil permeability ranged from moderately fast to fast (6.33–23.68 cm·h⁻¹), while soil pH was acidic (4.75–5.11). Total nitrogen was categorized as low (0.11–0.18%), total phosphorus as very low (10.73–27.56 mg·100g⁻¹), and total potassium as very low to low (3.60–10.87 mg·100g⁻¹). Organic carbon content was low to moderate (1.49–2.45%), base saturation was very low (3.37–13.59%), and CEC was classified as very low to low (4.39–8.62 cmol(+)/kg).  
Characterization of tidal land for suitability of Arenga pinnata Merr. plant development Helma Lia Gustina; Besri Nasrul; Idwar
Jurnal Online Pertanian Tropik Vol. 12 No. 3 (2025): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v12i3.17613

Abstract

Sugar palm has an economic and ecological functions. Sugar palm is also able to adapt to marginal land including tidal. This study aims to identify land characteristics for their suitability for tidal. This land survey research was carried out in the Tenayan Raya, Pekanbaru. Sampling points are based on the overlay of land system maps, soil type maps and peat depth maps. Assessment of land suitability for palm trees is carried out using the limiting factor method in actual and potential conditions. The assessment results show that the actual land suitability of all SLH is not current suitable (N1) with the limiting factor for toxicity (xc), with very high Fe levels. Limiting factors of Fe can be overcome by water management, amelioration (supplement of organic material), liming and fertilization. Potential land suitability of all SLH is marginally suitable (S3).
Mentari Kwala Bingai Elderly Daycare provides packaging and marketing assistance for moringa leaf tempeh chips Sebayang, Nur Ulina Warnisyah; Putri Chandra Ayu; Ecia Meilonna Koka
Jurnal Online Pertanian Tropik Vol. 12 No. 3 (2025): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v12i2.23048

Abstract

Mentari Elderly Daycare in Kwala Bingai Village provided assistance in the packaging and marketing of moringa leaf tempeh chips, an effort to empower the elderly through the development of healthy and economically valuable local food products. Partners faced challenges in substandard production, unattractive packaging design, and suboptimal marketing strategies. This community service activity aimed to increase the capacity of the elderly in managing small businesses based on functional foods through a participatory training approach. The assistance included training in hygienic and consistent moringa leaf tempeh chip production techniques, attractive packaging design, and digital and conventional marketing strategy training. The results of the activity showed an increase in the skills of the elderly in producing quality products with a longer shelf life. The moringa leaf tempeh chip product has obtained a Business Identification Number (NIB), a PIRT Number, and an MUI Halal Certificate, as a form of legality and quality assurance. Marketing is carried out online through social media and digital platforms, as well as offline in several minimarkets, bakeries, and through a network of resellers. This program not only increases the economic independence of the elderly but also strengthens the function of Mentari Daycare as a center for productive, social, and inspirational activities for elderly residents in Kwala Bingai Village.

Page 38 of 38 | Total Record : 377

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