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INDONESIA
Journal of Agriculture (JoA)
Published by Information Technology and Science
ISSN : -     EISSN : 28292421     DOI : 10.47709/joa
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
JoA aims publish primary research articles of current research topics from all over the world, not simultaneously submitted to nor previously published in other scientific or technical journals. General review and short communication articles will not be accepted. The journal maintains strict standards of content, presentation, and reviewing. SCOPE The journal will consider primary research papers from any source if they make an original contribution to the experimental or theoretical understanding and application of theories and methodologies of some aspects of agricultural science including: Soil science; Climate science; Agronomy; Agroforestry; Plant breeding; Biotechnology; Plant disease and protection; Farming system; Postharvest technology; Socio-economics of agriculture; Human research of agriculture JoA is published by Information Technology and Science (ITScience), a Research Institute in Medan, North Sumatra, Indonesia.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 217 Documents
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Analysis of Costs and Revenue of Arabic Coffee Farming and its Sales System: Case Study: Situmeang Habinsaran Village, Sipoholon District, North Tapanuli Regency, North Sumatra Province Hutapea, Kenal P.; Ginting, Nina Maksimiliana; Harefa, Niasti Nur Adil
Journal of Agriculture Vol. 3 No. 02 (2024): Research Articles, July 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i02.4511

Abstract

This research aims to determine the production costs and revenues of Arabica coffee farming in the research area to determine the net income and income of Arabica coffee farming families in the research area; to determine the feasibility level of Arabica coffee farming in the research area; to find out how the Arabica coffee sales system is in the research area. Determining the research area was carried out purposively. The sampling method is a simple random sampling method with a sample size of 30 farmers. The data analysis methods used are primary data and secondary data. The research results obtained several conclusions: The total cost of Arabica coffee farming in the research area for one year is IDR 24,747,244.44/Farmer or IDR 38,969,822.66/Ha. Revenue from coffee farmingamounting to IDR 102,758,553.33/Farmer or IDR 160,581,337.78/Ha; The net income of Arabica coffee farming for one year is IDR.78,011,308.89/Farmer or Rp.118,834,031.78/Ha. The income of an Arabica coffee farming family for one year is IDR 98,325,542.22/Farmer or IDR 152,317,561.41/Ha; The RCR value for coffee farming in the research area is 4.27 or RCR > 1. This shows that coffee farming is still feasible to cultivate or develop in the research area. The Arabica coffee sales system in the research area is that Arabica coffee farmers sell their harvest to regional collectors, market it to district collectors, and then sell it to provincial collectors.
Development Strategy for Arabic Coffee Processing Business in Kreasi Kopi Medan Simatupang, Donny Ivan Samuel; Pakpahan, Helena Tatcher; Panggabean, Lamris
Journal of Agriculture Vol. 3 No. 02 (2024): Research Articles, July 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i02.4536

Abstract

Various strategies and innovations are implemented as steps to achieve the desired profits and goals. However, it is also necessary to maintain business continuity for a long time and expand the business so that the wheels of the business continue to run smoothly. This research aims to analyse internal and external company factors that influence the development of Arabica coffee processing businesses in the research area, to analyse development strategies and alternative strategies for developing Arabica coffee processing businesses. The data analysis method was carried out using descriptive qualitative and using a SWOT analysis diagram. The results of this research are internal factors of strength, namely: initial business capital, attractive business name, place design, affordable prices, quality raw materials, varied menu variants, taste of coffee drinks and payment methods. Internal factors of weakness are: less strategic business location, limited workforce, service, product visuals, parking facilities and product variants that are not durable. External factors of opportunity are: consumer image, use of technology, consumers buying consistently, changes in consumer tastes, consumers buying online, adding menu variants and social media as promotion. External threat factors are: similar competitors, similar products, the existence of substitute drinks, fluctuations in raw material prices and declining consumer interest. Based on the SWOT analysis diagram, it is known that the company's position is in quadrant 1, supporting an aggressive strategy.
The Effect of Planting Media and Types of NPK Fertilizers (Compound and Mixed) on the Growth of Oil Palm Seedlings in Pre-Nursery Firmansyah, Ivan Dwi; Rochmiyati, Sri Manu; Ardiani, Fani
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4662

Abstract

This study aims to determine the effect of planting media composition and types of NPK fertilizers (compound and mixed) on the growth of pre-nursery oil palm seedlings. The study was conducted in September - November 2023 at the Instiper Yogyakarta Education and Research Garden. This study used a factorial experimental method arranged in a completely randomized design (CRD) consisting of two factors, namely the composition of the planting media (clay, sand, sand + clay + organic fertilizer, sand + clay, clay + organic fertilizer, sand + organic fertilizer) and types of NPK compound fertilizers (compound fertilizer 15-15-15 and mixed fertilizer 0.30g Urea + 0.30g TSP + 0.25 g MOP). The results showed that the treatment of NPK fertilizer types (compound and mixed) and planting media composition interacted significantly with the height of pre-nursery oil palm seedlings, where the combination of clay soil media with mixed fertilizers produced a plant height of 25.90 cm. The treatment of planting media composition significantly affects the number of leaves, where the composition of sand + clay + organic fertilizer produces the highest number of leaves, which is 4 strands. Furthermore, treating NPK fertilizer types (compound and mixed) also significantly affects the diameter of pre-nursery oil palm seedlings, where using mixed fertilizers gives the highest stem diameter results, which is 9.46 cm.
Factors Influencing the Application of Agricultural Technology in Veteran Jaya Village, Martapura District, Ogan Komering Ulu Timur Regency Yunita, Yunita; Efrianti, Rini; Sari, Yunita; Novayanti, Novayanti
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4872

Abstract

This study explains the problems in terms of the factors that influence the application of agricultural technology in Veteran Jaya Village, Martapura District, East OKU Regency. This study emphasizes the role of farmer groups in the application of agricultural technology in Veteran Jaya Village, Martapura District, East OKU Regency, especially in rain-fed rice farming. The purpose of this study was to describe the factors that influence the application of agricultural technology in Veteran Jaya Village, Martapura District, East OKU Regency. The type of research used in this study is the quantitative descriptive method (Valeriana et al., 2020). The data obtained from the study population sample were analyzed according to the statistical method used and then interpreted. Based on the results of the analysis, it can be concluded that the factors (X1) age of farmers, (X2) length of education, (X3) land area, (X4) have a significant effect on farmers' decisions to apply agricultural technology in Veteran Jaya Village, Martapura District, East OKU Regency. The most influential factor in the application of agricultural technology in Veteran Jaya Village, Martapura District, East OKU Regency is the experience of farming rice fields with a standard value of the partial regression coefficient of 6.049.
Optimization of Drying Models for Various Types of Turmeric Using A Tray Dryer Jassin, Ernawati; Fitri, Muhammad; Arisandi, Arwini; Aisyah, Nur
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4911

Abstract

Turmeric (Curcuma domestica val) is one of the plants that has benefits including as spices, seasonings, herbs, to maintain health and beauty and utilization as traditional medicine.  Drying is a method to extend the shelf life and maintain the quality of a post-harvest product before further processing. This study aims to optimize the thin layer drying model on various types of turmeric (white turmeric, black turmeric and yellow turmeric). Data obtained from drying results in the form of initial mass, mass during drying and the final mass of drying. Then processed to obtain the wet base moisture content, dry base moisture content and Moisture Ratio.  The thin layer drying model is obtained by finding the constant value of k, a and n from each exponential form. Determination of constants using Solver Tool Microsoft Excel that automatically searches for constant values in each dryer model tested, then obtains the highest R² value as the best model that describes the drying model of black turmeric and yellow turmeric. From the test results of curcumin content in white turmeric, black turmeric and yellow turmeric where the content of yellow turmeric has a higher value than both turmeric because it has an almost perfect arrangement of chemical elements. In the pH test, the highest result was obtained in white turmeric, namely 4.8 where the less curcumin contained in the turmeric rhizome, the higher the level of acidity of the turmeric.
Effect of Watering Time and Liquid Organic Fertilizer Concentration on the Growth and Production of Shallots (Allium Ascalonicum L.) Panataria, Lince Romauli; Saragih, Meylin Kristina; Sitorus, Efbertias
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4931

Abstract

Shallot production in Indonesia has not been able to meet market needs due to the scarce availability of subsidized chemical fertilizers. Another alternative to replacing chemical fertilizers can be using Liquid Organic Fertilizer. The aim of this research was to determine the effect of watering time and concentration of liquid organic fertilizer on the growth and production of shallots (Allium ascalonicum L.). The design in this study was a Randomized Block Design (RAK), consisting of 2 treatment factors, namely watering time (W) consisting of 2 treatment levels, namely: W1= 1x1 week, W2= 1x2 weeks and POC concentration (P) consisting of 4 treatment levels namely: P1= 2 ml/240 ml water/plant, P2= 4 ml/240 ml water/plant, P= 6 ml/240 ml water/plant and P4= 8 ml/240 ml water/plant. Data analysis uses analysis of variance, if the treatment factor has a significant effect on the variance test, a mean difference test is carried out using the Duncan Multiple Range Test (DMRT) at 5% level. The results showed that POC watering time had a significant effect on tuber diameter and number of tubers per sample, but had no significant effect on fresh weight of tubers per sample and dry weight of tubers per sample. POC concentration had a significant effect on tuber diameter, number of tubers per sample, fresh weight of tubers per sample and dry weight of tubers per sample.
The Effect of Foliar Fertilizer Application on the Growth and Production of Several Varieties of Mustard Plant (Brassica Juncea L) Sitorus, Efbertias; Sihombing, Parsaoran; Panataria, Lince Romauli; Saragih, Meylin Kristina
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4932

Abstract

The study aims to determine the effect of foliar fertilizer on the growth and production of several varieties of mustard greens (Brassica juncea L). This study used a Factorial Randomized Block Design (RAK) consisting of two factors. The first factor is mustard greens varieties (V) consisting of 3 levels: V1 = Tosakan variety, V2 = Shinta variety, and V3 = Dora variety. The second factor is foliar fertilizer (P), consisting of 3 levels: P0 = control, P1 = 2 cc / l of water, and P2 = 4 cc / l of water. The parameters observed in this study were plant height and wet and dry Weight of plants. The results showed that the variety treatment significantly affected plant height, wet Weight and dry Weight of mustard greens. The highest growth and production were obtained in variety V1 (Tosakan), followed sequentially by variety V2 (Shinta) and variety V3 (Dora). Foliar fertilizer treatment significantly affected plant height, wet Weight and dry Weight of mustard greens. The higher the concentration of leaf fertilizer given up to 4 cc/l of water, the higher the growth and production of mustard plants. The interaction between variety treatment and leaf fertilizer concentration had no significant effect on all observed variables.
The Effect of Solid Organic Fertilizer and Liquid Cow Dung Fertilizer on Rice Growth (Oryza Sativa L) Saragih, Meylin Kristina; Panataria, Lince Romauli; Sitorus, Efbertias
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4933

Abstract

This research was conducted in Sei Beras Sekata Village, Sunggal District, Deli Serdang Regency, North Sumatra Province. With an altitude of ± 25 meters above sea level. This study aimed to determine the response of rice growth (Oryza sativa L) to the provision of cow manure and liquid fertilizer. The design used was a Randomized Block Design (RAK) Factorial with the main treatment being solid organic fertilizer (A) with three treatments, namely L1 = (660 gr / Plot) 3 tons / Ha, L2 = (1100 gr / Plot) 5 tons / Ha, L3 = (1650gr / Plot) 7.5 tons / Ha. Organic fertilizer 3 treatments, namely, K1 = 2.5cc / liter, K2 = 5cc / liter, K3 = 7cc / liter. The parameters observed in this study were plant height per clump (cm), number of tillers per clump (stem), and number of productive tillers per clump (stem). The study showed that solid organic fertilizer treatment had no significant effect on all parameters. In contrast, liquid organic fertilizer significantly affected the number of productive shoots but did not significantly affect plant height per clump (cm) and number of shoots per clump (stems).
The Effect of Green Fertilizer Application Apu-Apu (Pistia Stratiotes) and Plant Growth Regulators on the Growth and Production of Lettuce (Lactuca Sativa L.) Simanjuntak, Pantas; Panataria, Lince Romauli
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4934

Abstract

This study aims to determine the effect of green fertilizer apu-apu and plant growth regulators on the growth and production of lettuce (Lactuca sativa L.). This study used a randomized block design (RAK) with two factors. The first factor is green fertilizer Apu-Apu with the symbol (K) consisting of 3 levels: K1 = 1 kg/plot, K2 = 1.5 kg/plot and K3 = 2 kg/plot. The second factor is plant growth regulators with the symbol (P) consisting of 4 levels: P0 = control (no treatment), P1 = 2 cc / l water, P2 = 4 cc / l water and P3 = 6 cc / l water. The results showed that green fertilizer apu-apu up to a dose of 2 kg/plot significantly increased the Height of fresh weight per plant, wet weight per plot and root weight per plot but did not affect plant height. The provision of plant growth regulators significantly increased plant height, wet weight per plant, wet weight per plot and root weight per plot. The administration of growth regulators up to a concentration of 6 cc/l of water resulted in the highest wet weight per plant and wet weight per plot. The interaction between apu-apu green manure and growth regulators did not significantly affect plant height, number of leaves, wet weight per plant, wet weight per plot and root weight per plot.
Characterization of Chemical Quality of Tuna Fish Skin Oil (Thunnus Sp.) Saleh, Rahmawati; Rosmaladewi, Rosmaladewi; Fattah, Nurlaeli; Laylah, Nur
Journal of Agriculture Vol. 3 No. 03 (2024): Research Articles November 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i03.4936

Abstract

The chemical physical properties of tuna fish oil include 25% saturated fat, 75% unsaturated fat, density 967.96 kg/m3, iodine number 170, saponification number 188, refractive index 25 oC 1.4785, unsaponifiable number 0.1% and types of fatty acids contained in tuna fish oil, namely palmitic, stearic, oleic and linoleic acids. Tuna fish waste, which includes heads, bones and skin, if not handled, will quickly deteriorate and become rotten, so further processing is needed to be utilized as well as possible into products such as oil from tuna fish processing waste. At present, oil from tuna fish waste, which is a derivative product of tuna fish with selling value, has not been widely developed and commercialized. Therefore, a more in-depth study of the processing of tuna fish waste is needed, including to determine the physico-chemical properties contained in oil from tuna fish waste. This study aims to analyze how the value of refractive index, peroxide number, free fatty acids and iodine number in tuna fish skin oil. The results showed that the chemical quality characterization of tuna fish skin oil obtained a refractive index value of 1.638, free fatty acids (FFA) 0.03%, peroxide number 0.2 meq / kg material and Iod number 44.74 g I2 / 100 g material.

Page 17 of 22 | Total Record : 217

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