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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Menara Ilmu Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Ekonomi Jurnal Agrilink : Kajian Agribisnis dan Rumpun Ilmu Sosiologi Pertanian (Edisi Elektronik) Jurnal Pengabdian Masyarakat Sapangambei Manoktok Hitei Jurnal Pengabdian Masyarakat SAPANGAMBEI MANOKTOK HITEI Jurnal Regional Planning (Edisi Elektronik)
Wahyunita Sitinjak
Fakultas Pertanian Universitas Simalungun
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing Physics Public Health Social Sciences Other

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Factors That Influence Orange Farmers Using Mixed Cropping Pattern in Nagori Bandar Purba, Purba District, Simalungun Regency Wahyunita Sitinjak
Jurnal Penelitian Pendidikan IPA Vol 11 No 7 (2025): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i7.5381

Abstract

The problems studied in this study are (1) How much additional income does orange farmers get by using intercropping planting patterns in the research area? (2) What are the business risks that occur in orange intercropping farming in Pura Subdistrict, Simalungun Regency? This study aims to determine what factors make farmers use orange intercropping planting patterns in Bandar Pura Village, Pura Subdistrict, Simalungun Regency. The data used are primary data obtained from intercropping orange farmers with a sample of 30 respondents, secondary data obtained from relevant agencies. The results of the study show that orange production of 15,882 kg received an income of Rp. 190,059,200 with a production cost of Rp. 83,170,162 with an income of Rp. 106,349,683, the feasibility of orange farming with intercropping planting patterns can be calculated by R/C analysis. Based on the research results, the R/C value was 2.23, meaning that each R/C result was 2.0 > 1, indicating that orange farming in Bandar Purba Village, Purba District, Simalungun Regency was profitable and worth developing.
Response of Growth and Production of Sweet Potato (Ipomea Batatas L.) Due to The Application of TSP Fertilizer and Cow Manure Wahyunita Sitinjak
Jurnal Penelitian Pendidikan IPA Vol 11 No 6 (2025): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i6.11875

Abstract

The purpose of this study was to determine the response of growth and production of sweet potatoes (Ipomea batatas L.) due to the application of TSP fertilizer and cow manure, carried out in Huta I Silau Bayu, Gunung Maligas District, Simalungun Regency, North Sumatra, from May to August 2024. The study used a factorial Randomized Block Design (RAK), with 2 factors. The first factor is TSP fertilizer with 4 levels, namely P1 = 20.4g / plot, P2 = 40.8g / plot, P3 = 61.2g / plot, P4 = 81.6g / plot. The second factor is Cow Manure with 4 levels, namely: S0 = No Treatment, S1 = 5.1kg / plot, S2 = 10.2kg / plot, S3 = 15.3kg / plot. Observed parameters were Tendrils Length (cm) at 3 and 5 MST, Number of Bulbs Per Plant (fruit), Number of Bulbs Per Plot (bulbs), Bulb Weight Per Plant (g) and Bulb Weight Per Plot (kg). The results showed that TSP fertilizer application significantly affected Tendrils Length (cm) at 3 and 5 MST, Number of Bulbs Per Plant (bulbs), Number of Bulbs Per Plot (bulbs), Bulb Weight Per Plant (g) and Bulb Weight Per Plot (kg). The best dose of TSP fertilizer was found in the treatment of 30 tons/ha: 15.3 kg/plot. Cow Manure treatment significantly affected Tendrils Length (cm) at 3 and 5 MST, Number of Bulbs Per Plant (bulbs), Number of Bulbs Per Plot (bulbs), Bulb Weight Per Plant (g) and Bulb Weight Per Plot (kg). The best dose of cow manure was found in the treatment of 160 kg/ha: 81.6 g/plot. The interaction treatment of TSP fertilizer and Cow Manure fertilizer significantly affected the Length of Tendrils (cm) at the age of 3 and 5 MST, Number of Bulbs Per Plant (bulbs), Number of Bulbs Per Plot (bulbs), and Bulb Weight Per Plot (kg). It had no significant effect on Bulb Weight Per Plant (g). The best interaction treatment was in the TSP treatment (30 tons/ha: 15.3 kg/plot) with cow manure (160 kg/ha: 81.6 g/plot).  
Analysis of the Partnership Between Turnip Farmers and PT VAI Company in Purba District Roeskani Sinaga; Wahyunita Sitinjak; Jhon Kariando Purba
Jurnal Penelitian Pendidikan IPA Vol 11 No 9 (2025): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i9.12738

Abstract

This study aims to analyze the form of partnership implementation between turnip farmers and PT VAI, examine the benefits of this form of partnership for turnip farmers, and analyze turnip farming income. This study was conducted in Purba District, Simalungun Regency. Farmers in Nagori Pamatang Purba were designated as sample villages from the population that became research respondents. The sampling technique and population in this study used Purposive Sampling and Snowball techniques. The data analysis method used descriptive analysis of PT VAI's contract with partner farmers, farm income analysis, and R/C Ratio. The results of the study indicate that the form of partnership between PT VAI and turnip farmers in Purba District is a subcontract form. Where farmers and PT VAI have a contract regarding seeds, production prices and product quality. The benefits that are definitely obtained by farmers as partners include being able to help in procuring seeds. Farmers get convenience for seeds because they do not have to do their own seeding, thereby reducing the risk of failure because the seeds are ready to plant. The benefits of marketing guarantees provide a guarantee that the resulting product will be immediately sellable. One hundred percent of turnip farmer respondents answered that they received benefits in marketing convenience. This aligns with the initial rationale and hope for joining, which is that farmers won't have to search for markets to sell their products. Marketing guarantees can also motivate farmers to produce according to PT VAI's criteria so their products are accepted. Radish farming in Pematang Purba Village generates substantial income and is considered viable, as the R/C ratio analysis shows a value of 3.01, meaning that for every Rp 1.00 spent, a return of Rp 3.01 is generated.
Co-Authors Arvita Netti Sihaloho Arvita Netti Sihaloho, Arvita Netti Arvita Sihaloho Azis Trilinardi Cristin Imelda Girsang DIMAS SYAHPUTRA Eva T. Nainggolan Hermes, Christian Daniel HOTMAN TUAH PURBA Humala Sitinjak Humala Sitinjak Imman Yusuf Sitinjak Inciana Napitu Irawaty Rosaline Januari Rizky January Rizky Jenriswandi Damanik Jhon Kariando Purba Jhonson A Marbun Jhonson Marbun Jumpa Ukur Juwita Asyia Tanjung Krissi Wahyuni Saragih Lenny Mutiara Ambarita Linda Reni Linda Reni Purba Linda Reni Suriani Purba Mahasiswa Universitas Simalungun Mariah SM Purba Marlan Marlan Martua Siadari Masdin Saragih Mathew Fransiscus Ndraha Mirna Anriani Siregar Novelina Mutiara Sariati Hutapea Pasu Malau Ramainim Saragih Rizky Ananda Saragih Romauli Simanjuntak Romauli Simanjuntak Rony Andre CH Naldo Rosita Nainggolan Rosmadelina Purba Sariaman Gultom Simon Sidabukke Sinaga, Roeskani Sry Maya Purba Yufan Marpaung