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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 212 Documents
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The Effect of a Combination of Rubber Wood and Palm Shells as a Source of Fuel in the Fumigation Process Ribbed Smoked Sheet (RSS) Mulia, Sukri; Yurizki, Yusra; Nasution, Nurhadida
Journal of Agriculture Vol. 2 No. 03 (2023): Research Articles, November 2023
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v2i03.3609

Abstract

Natural rubber is one of the ingredients result that there are many rubber plantation in Indonesia, products of natural rubber product manufactured by company nationwide Rubber Company is lateks dark, ribbed smoked sheet and crumb rubber one of products manufactured by the factory rubber factory in Indonesia is ribbed smoked sheet. ribbed smoked sheet is one kind of processed products derived from latex or latex have a brisiliensis rubber plants are processed in mechanical and chemical engineering using a drying room with smoke, almost all factories do fumigation only using rubber wood as fuel, the researchers are looking for alternative fuel using palm shells are pretty much and easily accessible in the palm oil mill.  The purpose of this study was to determine the effects of fuel combination of rubber wood and palm shells as a fuel source fumigation ribbed smoked sheet this study uses fuel of rubber wood and palm shells by using a laboratory scale fumigation, the first combination used 100% rubber woods, the second combination used 50% rubber woods and 50% palm shells the third combination used 100% palm shells. Ribbed smoked sheet  which is observed  according  to the ribbed smoked sheet  Indonesian national standard (SNI) the result of the study indicated that wood rubber fuel produce the best ribbed smoked sheet than palm shells and the combination of palm shells and rubber wood.
Effect of Plant Growth Promoting Rhizobacteria (PGPR) on Growth and Yield of Soybean Paulus, Jeanne Martje; Tooy, Dedie
Journal of Agriculture Vol. 3 No. 01 (2024): Research Articles, March 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i01.3613

Abstract

This study aimed to (1) examine the effect of giving PGPR (Plant Growth Promoting Rhizobacteria) to increase soybean growth and production and (2) obtain the best dose of PGPR to increase soybean growth and production. The research was carried out in Tontalete Village, Kema District, North Minahasa Regency, North Sulawesi from June 2021 to October 2021. The field experiment was arranged in a Randomized Block Design (RBD). The treatment tested was the concentration of PGPR, which consisted of  P0 = 0 ml/l (control), P1 = 5 ml/l, P2 = 10 ml/l, P3 = 15 ml/l, and P4 = 20 ml/l. The treatment was repeated three times, so there were 15 experimental units. Parameters observed were: plant height, number of branches, number of pods per plant, percentage of damaged pods per plant, the weight of 100 dry seeds, and seed yield/plot. The data were analyzed using the Analysis of Variance (ANOVA) and continued with the mean difference test using the Least Significant Difference Test (LSD) at the 5% level. The results showed that the application of PGPR affected the growth and yield of soybeans by increasing plant height, the number of pods per plant, and dry seed yield. The highest dry seed yield was achieved at PGPR concentrations of 10 ml/l and 15 ml/l, which were 1.34 g and 127.87 g, equivalent to 1.34 tons ha-1 and 1.28 tons ha-1, respectively.
Morphological Character and Clorophyl Content Index of Corn Infected with Dowry Disease on Land Applied With Slow Realease Fertilizer Based on Corn Cob Biochar Rahim, Iradhatullah; Nurbaya, Nurbaya; Ilmi, Nur; Sukmawati, Sukmawati; Putera, Muh Ikbal; Suherman, Suherman; Yamin, Mayasari
Journal of Agriculture Vol. 3 No. 01 (2024): Research Articles, March 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i01.3642

Abstract

Downy mildew is a significant disease of corn plants caused by the pathogenic fungus Peronosclerospora maydis, with attack rates reaching 95%. The application of slow-release fertilizer based on corn cob biochar is expected to increase the resistance of corn plants. Similarly, Bacillus sp. and Pseudomonas sp. are known as antagonistic microorganisms. Bacteria can produce antibiotic compounds that hydrolyze fungal cell walls, siderophores, and other antibiotic properties that inhibit pathogen growth. This study aims to determine the morphological characteristics of downy mildew-infected corn on biochar-applied land. Treatments were arranged factorially in a Factorial Randomized Block Design repeated four times. The treatment was the application of slow-release fertilizer from biochar mixed with NPK fertilizer, namely control, slow-release fertilizer, slow-release fertilizer + cow urine, and slow-release fertilizer + cow urine + bacteria (Azobacter and Bacillus). The results showed that slow-release fertilizer gave the best growth to both normal and downy mildew-affected maize plants. The stomata of typical corn leaves were more open with regular vascular bundles, while those affected by downy mildew had more closed and irregular stomata. The chlorophyll content index in downy mildew-affected maize can also improve by applying biochar-based slow-release fertilizer.
The Potential of Liquid Organic Fertilizer for Hydroponic Nutrition: A Systematic Literature Review Syamsia, Syamsia
Journal of Agriculture Vol. 3 No. 01 (2024): Research Articles, March 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i01.3720

Abstract

Nutrients are the main component in a hydroponic system. Liquid organic fertilizer has the potential to be a source of hydroponic nutrition because it can be made from agricultural waste through a fermentation process using local microorganisms. The aim of the research is to analyze articles that use the theme of liquid organic fertilizer and describe various topics that are relevant and have novelties to be developed in future research. The bibiometric analysis used in the research used the 2019-2023 literature. The data collection method uses dimensions with the keyword "liquid organic fertilizer" to obtain 500 papers published in 2019-2023. The data was sorted into 300 articles for further analysis with the help of VOSviewer 1.6.19_Mac software. The research results show that the theme of liquid organic fertilizer implemented in scientific articles has become a serious concern and has had high interest value for researchers over the last 4 years. Several new topics that need to be studied further to support the development of liquid organic fertilizer as nutrition in hydroponic systems to support sustainable agriculture include: local microorganisms (mol), biostimulants, cocopeat, chicken manure. Elsevier is a publisher in the main ranking which publishes articles and is widely cited. Keywords with different topics are needed to analyze articles to get new ideas and innovations in developing knowledge and technology that supports sustainable agriculture.
Potential and Absorption of CO2 in Various Types of Dry Land Use in Aceh Besar Regency Abdullah, Umar Husein; Martunis, Lukman; Mulyanti, Mulyanti; Yana, Dewi; Akbar, Yusran; Agustina, Sri
Journal of Agriculture Vol. 3 No. 01 (2024): Research Articles, March 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i01.3760

Abstract

This study was carried out on a 239,439.63 ha unit of dry land in the Aceh Besar Regency. The Soil and Plant Science Laboratory and the Soil Physics Laboratory at the Faculty of Agriculture, Universitas Syiah Kuala, analyzed soil and biomass samples. Twelve different land use types in the Aceh Besar Regency's dry land are the research locations. Utilizing a methodology with the number SNI 7724:2011, the Indonesian National Standards Agency established the biomass measuring and sampling procedure in 2011. According to the study's findings, the primary forest land use type has the greatest potential for absorbing CO2 in the forest land use type, followed by the following. Pine forest, secondary forest, teak forest, eucalyptus forest, and bush forest, in that order. In contrast, the land use categories of mixed gardens, moors, bushes, grassland, rainfed rice fields, and bare ground have the highest potential for absorbing CO2. Primary forests have the largest overall carbon dioxide absorption among the many forest land use types. These are followed, in order, by secondary forests, bush forests, eucalyptus forests, pine forests, and teak forests. The primary forest land use type has the largest total CO2 absorption among the non-forest land use types, followed by grasslands, shrubs, mixed gardens, rainfed rice fields, moorland, and bare ground, in that order. The Aceh Besar Regency's numerous dry land uses can benefit from enhanced natural and environmental sustainability due to the wide stem diameter and abundance of woody plants, which can also increase CO2 absorption. Highlights High CO2 potential and sequestration are critical in controlling climate change Humans play an important role in regulating and maintaining the availability of plants to maintain environmental stability. Forest protection plays an important role in maintaining the biodiversity of plants, animals, and endangered species in protected forest areas.
The Influence of Leadership, Motivation, Discipline and Work Environment on the Performance of Employees at Batang Laping (BALAP) PTPNIV Nasution, Nurhadida; Yanti, Mariana Eva
Journal of Agriculture Vol. 2 No. 03 (2023): Research Articles, November 2023
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v2i03.3899

Abstract

This study aims to (1) determine the condition of leadership, motivation, discipline, work environment on employee performance at PT Perkebunan Nusantara IV Balap Estate. (2) Knowing the concept of leadership, motivation, discipline, work environment on employee performance at PT Perkebunan Nusantara IV Balap Estate. (3) Knowing the effect of leadership, motivation, discipline, work environment on employee performance at PT Perkebunan Nusantara IV Balap Estate. Report collection was carried out at PT Perkebunan Nusantara IV Balap Estate, Mandailing Natal District. The population is all employees of the Balap Estate with a total of 300 people. Withdrawal of samples using purposive sampling technique so that the total sample is 85 people. Data analysis used the Likert Scale method and the SmartPLS method.
Breaking the Dormancy of Some Varieties of Papaya (Carica Papaya L.) Soaking KNO3 Solution Saragih, Meylin Kristina; Panataria, Lince Romauli; Sitorus, Efbertias; Manurung, Agnes Imelda
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.v3i02.3963

Abstract

Dormancy is a state of stopping growth experienced by plants. This research aimed to determine the concentration of KNO3 solution in breaking dormancy in several papaya varieties. The research method used in this research was a completely randomized design (RAL) Factorial with 2 treatment factors. The first factor is variety (V), consisting of V1 = Callina, V2 = California, and V3 = Local. The second factor is the concentration of the KNO3 (K) solution consisting of: K0 = Control, K1 = 10%, K2 = 20% and K3 = 30%. The variables observed were growth synchrony and germination speed index. Data analysis uses analysis of variance. The variables observed were growth synchrony and germination speed index. An analysis of variance was used to test the effect of treatment. To test mean differences between treatments, honest significant difference tests, regression, and correlation were carried out at a test level of 5%. The research results showed that seed variety had a significant effect on growth synchrony and germination speed index. The concentration of KNO3 solution has a significant effect on growth synchrony and germination speed index. The interaction between the variety and concentration of KNO3 solution had no significant effect on all observed parameters.
Response of Pakcoy Plant Growth and Production to the Application of Poc and Manure Panataria, Lince Romauli; Simanjuntak, Pantas; Sitorus, Efbertias; Saragih, Meylin Kristina; Manurung, Agnes Imelda
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.v3i02.3965

Abstract

Pakcoy (Brassica rapa L.) is a type of vegetable plant is used by people in various dishes because it contains minerals, protein, Vitamin A, Vitamin B, Vitamin B2, Vitamin B6, Vitamin C, potassium, phosphorus, copper, magnesium, iron, carbohydrates and fiber.This research aims to see the effect of giving POC and chicken manure on the growth and production of pakcoy plants. This research was carried out using a factorial Randomized Block Design (RAK) which consisted of two factors, namely the concentration of chicken manure which consisted of 3 levels, namely A0 = 0 kg / plot, A1 = 1 kg / plot, A2 = 2 kg / plot, and A3 = 3 kg / plot. The second factor is the POC dose which consists of 4 levels, namely. E1=10 ml/liter water/m2, E2= 20 ml/liter water/m2 and E3=30 ml/liter water/m2. The results showed that the application of chicken manure had no significant effect on the number of leaves, wet harvest weight per plot, wet harvest weight per hectare, wet sale weight per hectare. The interaction between giving chicken manure and POC had a significant effect on the number of leaves, wet weight of harvest per plot, wet weight of harvest per hectare, wet weight of sale per hectare.
The Effect Plant Media Composition on the Growth and Production Some Varieties Strawberry Sitorus, Efbertias; Sihombing, Parsaoran; Panataria, Lince Romauli; Saragih, Meylin Kristina; Manurung, Agnes Imelda
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.v3i02.4012

Abstract

This research was conducted in Barus Jahe Village, Barus Jahe District, Karo Regency, North Sumatra, with an altitude of 1,367 meters above sea level. This study aims to determine the effect of the composition of the planting medium and several varieties on the production and growth of strawberry plants. The design used in this research is a Factorial Split Plot Design (RPT), which consists of two factors. The first factor is the main plot, Variety (V), with 3 levels: V1 = California, V2 = Local Bandung, and V3 = Local Brastagi. The second factor is the subplot, namely Planting Media Composition (M), which consists of Soil: Charcoal Husk: Chicken Manure, namely: M1= 1:1:1, M2= 2:1:1, M3= 1:2:1, and M4= 2:1:2.The variables observed were plant height, plant wet weight and plant dry weight, fruit weight and sugar content (Brix). Analysis of variance was used to test the effect of treatment and mean differences between treatments; honest significant difference tests, regression, and correlation were carried out at a test level of 5%. The research results showed that the composition of the planting media had no significant effect on the observed parameters. However, in some varieties, V1 (California) has a substantial impact on fruit weight and sugar content (Brix), and V2 (Local Bandung) has a significant effect on plant height, wet weight, and dry weight.
Marketing Analysis of Elephant Ginger in Hatinggian Village, Lumban Julu District, Toba Regency Bancin, Arif Santosa; Harahap, Mailina; Apriyanti, Ira
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.v3i02.4107

Abstract

Ginger is a medicinal plant that is often used as a pain reliever. Demand for ginger increases along with the development of human knowledge. So to meet consumer needs, a marketing institution is needed, such as the Gajah ginger farmers in Hatinggian village. The aim of the research is to find out how the marketing channels for Gajah ginger are, to find out the marketing margin and marketing efficiency of Gajah ginger. The research sample was 22 Gajah ginger farmers, 3 collectors and 3 retailers. Data analysis uses descriptive analysis and formula equations for marketing costs, marketing margin, Farmer share, marketing efficiency. The research results show that there are two marketing channels for Gajah ginger in Hatinggian village, Lumban Julu subdistrict, namely; 1). Marketing channel I from farmers to retailers then consumers and 2). Marketing channel II from farmers to collectors then to retailers and then consumers. The market share of marketing channel I is greater than marketing channel II so that marketing channel I (6.14%) is more efficient than marketing channel II (6.89%).

Page 7 of 22 | Total Record : 212

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