Article Per Year (5 Year)
p-Index From 2021 - 2026
2.47
P-Index
This Author published in this journals
All Journal Buletin Penelitian Sosek E-Dimas: Jurnal Pengabdian kepada Masyarakat Jurnal Pertanian Agros Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Agro Bali: Agricultural Journal Tropical Plantation Journal Journal of Agriculture (JoA) Jurnal Pengabdian Masyarakat dan Riset Pendidikan
Aji, Wandha Atmaka
Akademi Komunitas Perkebunan Yogyakarta
Agriculture, Biological Sciences & Forestry Humanities Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Mathematics Social Sciences Veterinary Other

Published : 16 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 9 Documents
Search
Journal : Tropical Plantation Journal

 1 
The Effect of Rainfall and Rain Days On Palm Oil Production Wandha Atmaka Aji; Subakho Aryo Saloko; Indra Kurniawan; Mukti Ahmad Nurcahya
Tropical Plantation Journal Vol 1, No 1 (2022): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.422 KB) | DOI: 10.56125/tpj.v1i1.3

Abstract

One of the determining factors for water availability for palm oil plants that do not use irrigation systems is rainfall. The availability of water is a major factor that limits the level of production of palm oil plants. The availability of water for oil palm plants in the field is obtained from rainfall data. This research was conducted at PT. Menthobi Makmur Lestari, Lamandau Regency, Central Kalimantan Province, from June 2021 to July 2021. This study uses secondary data analysis including data on of fresh fruit bunches (TBS) production components in the form of components of the number of fruit bunchesg, average fruit bunches weight, number of productive principals, seed fruit bunches weight; data on the production of fres TBS; rainfall data; and monthly rainy day data in 2017, 2018 and 2019 in 6 Divisions. The results of the analysis showed that variable rainfall and rainy days had a real effect on the increase in TBS production at the age of 5 years. Correlation results in plants aged 12, 15 and 18 years with a two-way analysis at the test level of 1% showed the variable rainfall and rainy day had a strong, real and unidirectional relationship. The correlation value of rainfall and consecutive rainy days is 0.892; 0,887; and 0.855 with significance value of 0.000.
Implementation of integrated pest control to reduce rhino beetle (Oryctes rhinoceros) attacks in oil palm plantations Idum Satia Santi; Alfi Prayoga; Heri Setyawan; Wandha Atmaka Aji
Tropical Plantation Journal Vol 1, No 2 (2022): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (947.667 KB) | DOI: 10.56125/tpj.v1i2.10

Abstract

Oryctes rhinoceros or Rhino beetle ( Coleoptera; Scarabidae) is a major pest in oil palm plantations. This pest is very harmful, especially in replanting areas, and young plants cause up to 25 per cent of palm oil-related deaths. This study aims to evaluate the effectiveness of integrated pest management in suppressing the population and development of O. rhinoceros. The research was conducted at the Oil Palm Plantation, PT. Sumber Indah Perkasa, Penawartama, Tulangbawang Regency, Lampung Provincial for one year. The analysis used is a descriptive analysis involving the collection of data from a variety of control techniques. The results showed that the pest control techniques of O. rhinoceros lightrap, ferotrap, holetrap, nets, larval quotes and chemistry could suppress or decrease pest populations. The control with light traps is very efficient because it obtained the number of captures of imago beetles up to 246,224 in 1 year. The integrated pest control of O. rhinoceros successfully reduced the attack of beetles until it did not reach the economic threshold. It is hoped that implementing integrated O. rhinoceros pest control can be a reference for plantations
Taxation of Palm Oil Production Results Using on Regression Model (PT. Menthobi Makmur Sustainable) Wandha Atmaja Aji; Bagus Nugroho; Toyyibah Toyyibah
Tropical Plantation Journal Vol 2, No 1 (2023): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v2i1.15

Abstract

PT Menthobi Makmur Lestari is a growing industrial company in the field of palm oil production. The company is targeting increased palm oil production to forecast capacity plans and manufacturing facilities. One of the prediction methods used is multiple linear regression. The free variables used for prediction are the age of the tree, land area (ha), number of trees, number of vines, and the bound variable is the yield of oil palm production. The results of the correlation test using multiple regression showed a significant correlation of 0.05 or less. Hypothesis testing includes multiple linear regression and correlation using the t test and f test with a significance level of α = 0.05. The value of multiple correlation analysis (R) is 0.947 and the coefficient of determination is 90%. The performance of the multiple regression equation is the accuracy of predictions with an average absolute error percentage (MAPE) of 21%, which is formed from the validation of training and testing data.
Increased Value Addition of Liberica as Robusta Additive at Pangkalan Bun Shop Risca Permata; Saprudin Saprudin; Wandha Atmaka Aji; Andli Setiawan
Tropical Plantation Journal Vol 2, No 2 (2023): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v2i2.26

Abstract

The study aims to calculate the income and added value of businesses that process liberica coffee fruit into ground coffee. This survey lasted for one month, from August 2020 to September 2020. The research place is the KBA Coffee Shop owned by Mr. Sutrisno in South Arut District. The method taken in this study is to use primary data and secondary data. Primary data were obtained through live interviews using a series of questions. Secondary data were obtained through supporting literature and their relation to this study.  The data analysis methods used in this study are: (1) calculating the business income of liberica coffee fruit processed into coffee grounds, (2) calculating the added value of liberica coffee grounds. The results of the study showed that the Liberica coffee ground processing business provided income to Mr. Sutrisno of Rp. 2 million. 17,991,111.13 per month. The added value enjoyed by KBA coffee shop owners is Rp. 22,830 / Kg of raw materials used. This added value is what KBA Coffee Shop obtains when using 1 kg of raw materials.
Determinants of Labor Productivity in Palm Oil Harvesting, Central Kalimantan Wandha Atmaja Aji; Heri Setyawan; Indra Kurniawan; Idum Satia Santi
Tropical Plantation Journal Vol 2, No 2 (2023): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v2i2.25

Abstract

Work effectiveness is greatly influenced by organizational development, placement, and use of work. Productivity at work has a big impact on results. This study aims to identify the impact of determinants of labor productivity as an oil palm harvester in oil palm plantations in order to increase knowledge, skills and experience in work. Data on the labor productivity of oil palm harvest was carried out by Purpose sampling of 76 people taken from 6 stagnation in 3 afdeling related to wages and premiums obtained every month. Data analysis using descriptive methods and multiple linear regression. Multiple regression analysis partially shows that education level, number of dependents, and age have no real effect on labor productivity, but length of work does. Simultaneous regression tests show that education level, number of dependents, age, and length of working hours have a significant effect on the labor productivity of oil palm harvests.
Correlation of Plantation Area and Palm Oil Production in Sumatra and Kalimantan Regions Kurniawan, Indra; Kurniadhi, Adhitya; Aji, Wandha Atmaka; Manto, Agus
Tropical Plantation Journal Vol 3, No 2 (2024): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v3i2.46

Abstract

This study aims to analyze the correlation between the area of oil palm plantations and oil palm production in Indonesia, especially in the Sumatra and Kalimantan regions which are the centers of oil palm plantation distribution. Data collection using secondary data from the Central Statistics Agency (BPS), this study aims to determine the relationship between the increase in land area and oil palm plantation production over the past 10 years. This study uses a quantitative method with a correlative approach. Data analysis was carried out using a bivariate correlation Pearson correlation test to determine the positive relationship between plantation area and oil palm production. The results of the analysis showed a significant positive relationship between the land area variable and oil palm production in both the Sumatra and Kalimantan regions, this is indicated by a positive number and a strong correlation of 0.852 for the Sumatra region and very strong, namely 0.996 for the Kalimantan region. In addition, the results of the interpretation of the correlation by looking at Sig. (2-tailed) also show that between the land area variable and production there is a significant correlation, namely 0.002 for the Sumatra region and a value of 0.000 for the Kalimantan region. Although the correlation between land area and production shows a positive value and has a very strong correlation, there are still other factors such as technology, climate, and management practices that also play a role in influencing palm oil production results.
Analysis of the Feasibility of Eco-enzyme Liquid Organic Fertilizer (POC) Business in Sumber Jaya Farmer Group, Puring District, Kebumen Regency Fatmawati, Nurlaila; Setyawan, Heri; Aji, Wandha Atmaka
Tropical Plantation Journal Vol 3, No 2 (2024): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v3i2.41

Abstract

This research was carried out in Sidobunder Village, Puring District, Kebumen Regency. This research was carried out from December 2023 to January 2024. This study aims to analyze the income and feasibility of the eco-enzyme liquid organic fertilizer business in the Sumber Jaya Farmers Group, Puring District, Kebumen Regency from a financial perspective through the calculation of Break Even Point (BEP), Benefit Cost Ratio (BCR) and Revenue Cost Ratio (R/C). The method used is a survey through observation and direct interviews. The determination of farmers as research respondents was by Purposive Sampling, respondents were taken from 30 farmer members in the Sumber Jaya Farmers Group. This location was chosen because this village is one of the production places for eco-enzyme liquid fertilizers and has the potential for the development of eco-enzyme liquid fertilizers. The data was analyzed using an income analysis model and a financial feasibility analysis. Then the data is tabulated and processed mathematically, through addition, and the averages and percentages are then descriptively described. The results of this study show that the income/year in the Sumber Jaya Farmers Group, Puring District, Kebumen Regency is Rp. 14,447,834 or income/month is Rp. 1,203,986. Based on the feasibility of the eco-enzyme liquid organic fertilizer business in Sumber Jaya Farmers Group, Puring District, Kebumen Regency, it is feasible to be developed financially because of the BEP value of 14,400 bottles with a minimum of 142 bottles. BEP is priced at IDR 10,000 with a minimum price of IDR 8,997/bottle, and an R/C value of 1.11 means that the R/C value is feasible.
Impact of Charcoal Husk and NPK Fertilizer on The Optimization of Palm Seedlings (Elaeis Guineensis Jacq) in Marginal Land Aji, Wandha Atmaka; Nugraha, Maulana Adhika; Setyawan, Heri; Nurjanah, Rizka; Nugroho, Bagus; Nurcahyono, Nurcahyono
Tropical Plantation Journal Vol 4, No 2 (2025): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v4i2.54

Abstract

Penelitian ini bertujuan untuk meningkatkan efektivitas penggunaan arang sekam bakar dan pupuk NPK terhadap pertumbuhan bibit kelapa sawit (Elaeis guineensis Jacq). Metode penelitian yang digunakan adalah eksperimen dengan Rancangan Acak Lengkap (RAL) dengan berbagai perlakuan pemberian arang sekam bakar dan pupuk NPK pada media tanam. Hasil penelitian menunjukkan bahwa kombinasi arang sekam dengan pupuk kandang, khususnya dengan perbandingan 1:1 memberikan kontribusi nyata terhadap peningkatan tinggi bibit kelapa sawit dibandingkan dengan perlakuan lainnya. Analisis statistik menggunakan uji ANOVA menunjukkan bahwa perbedaan perlakuan memberikan pengaruh nyata terhadap pertumbuhan bibit, dengan perlakuan P2 menghasilkan pertumbuhan tertinggi. Temuan ini menggarisbawahi pentingnya penggunaan media tanam yang tepat untuk optimalisasi pertumbuhan bibit kelapa sawit, yang dapat berimplikasi praktis terhadap pengelolaan perkebunan kelapa sawit.
Analysis of The Relationship Between Attitude and Leadership in Improving The Performance of Harvest Foremen: A Case Study of Oil Palm Plantations Aji, Wandha Atmaka
Tropical Plantation Journal Vol 5, No 1 (2026): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v5i1.84

Abstract

This study analyzes the relationship between attitude and leadership in improving the performance of harvest supervisors in oil palm plantations. Harvest supervisors play a strategic role as a link between management and field workers, where their personal attitude and leadership quality directly affect productivity and the quality of fresh fruit bunches (FFB). A quantitative descriptive approach was employed through case studies in several estates in South Sumatra, involving 118 respondents. The attitude variable was measured through indicators such as integrity, commitment, loyalty, innovation, and self-confidence, while the leadership variable included work instructions, task distribution, work evaluation, motivation, and occupational health and safety (OHS). Results show that the average score for attitude was 3.26 and for leadership 3.29 (on a 1–4 scale). Performance distribution indicated 15% of supervisors in category A (76), 65% in category B (56–75), and 20% in category C (55). A positive correlation was found between positive work attitudes and effective leadership, which contributed to higher performance outcomes. Estate E achieved the highest scores (3.93), while Estate C recorded the lowest (3.00–3.06). These findings highlight the need to strengthen innovation, motivation, and OHS practices as priorities in supervisor development programs. The study contributes to human resource management in agribusiness by providing practical recommendations, particularly leadership training based on positive work attitudes, to sustainably improve harvest performance.
Co-Authors Alfi Prayoga Alvito Hariansa Andli Setiawan Bagus Nugroho Dewi Puspita Elfatma, Olivia Fahmi Wiryamarta Kifli HERI SETYAWAN Heri Setyawan Hermantoro, Hermantoro Idum Satia Santi Idum Satia Santi Ihsan Mustaqim Indra Kurniawan Indra Kurniawan Indra Kurniawan Jeki Pranata Kurniadhi, Adhitya M Juremi Suhartono Manto, Agus Marta, Rolly Nirfrizal, Risca Permatasari Nugraha, Maulana Adhika Nugroho, Bagus Nurcahyono Nurcahyono, Nurcahyono Nurjanah, Rizka Nurlaila Fatmawati Olivia Elfatma Olivia Elfatma Rani Muherje Reza Dwi Saputra Ririn Putriyani Risca Permata Ruccy Widiawati Saprudin Saprudin Sri Gunawan Subakho Aryo Saloko Subakho Aryo Saloko Subakho Aryo Saloko Toyyibah Toyyibah Toyyibah Toyyibah, Toyyibah Trinety Octavia Z Utami, Aditya Dyah Yessi Munawaroh Yuliana Debora Anggraini