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All Journal Jurnal Darma Agung Journal of Research in Mathematics Trends and Technology JURNAL AGROTEKNOSAINS SWARNA JURNAL AGRIUST SWARNA: Jurnal Pengabdian Kepada Masyarakat Journal of Agrotechnology and Sustainability
Sitinjak, Lentina
Universitas Katolik Santo Thomas
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PENGARUH UMUR PEMANGKASAN PUCUK DAUN DAN PEMBERIAN PUPUK KANDANG AYAM TERHADAP PRODUKSI TANAMAN MENTIMUN (Cacumis sativus L.) Sitinjak, Lentina; Harefa, Kurnia Selekta Etika
AGROSUSTAIN Volume 1 Nomor 2 (2023)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v2i1.3575

Abstract

One of the ways to increase cucumber production is through intensive cultivation techniques with a shoot pruning system and the application of organic fertilizers. The focus of this research is to optimize fruit quality and quantity. This research was conducted at Jalan Anggrek II Simpang Selayang, Medan Tuntungan District, Medan City, North Sumatra, starting in December 2023 until February 2024, using a Randomized Group Design (RAK) consisting of two factors. Parameters observed in this study were the number of fruits per plant, weight per fruit, fruit weight per plant, fruit diameter and fruit length. Based on the results of the study, it can be concluded that pruning shoots at the age of 29 days after planting significantly increases the number of fruits per plant, weight per fruit, fruit weight per plant, fruit diameter and fruit length. Doses of chicken manure significantly increased the number of fruits per plant, weight per fruit, fruit weight per plant, fruit diameter and fruit length. The interaction between shoot pruning and manure dose had no significant effect on all parameters observed. Pruning shoots at the age of 29 days after planting increased the number of fruits per fruit by 9.06%, increased fruit weight per plant by 19.78%, increased fruit weight per plot by 28.35%.
Variasi Dosis Mulsa Organik Akasia dan Kirinyuh dalam Mengendalikan Gulma pada Tanaman Kedelai : Studi Karakteristik Pertumbuhan Tanaman Kedelai Ramut, Anuar; Harta, Rika Yusli; Pani, Mario; Sitinjak, Lentina; Mahfirah, Adhaini
AGROSUSTAIN Volume 3 Nomor 1 (2025)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v3i1.4617

Abstract

The success of controlling weeds in soybean plantations, apart from being determined by the type, also determines the dose of mulch. This research aims to obtain the type and dosage of organic mulch to control weeds in soybean plantations. The research was carried out from August to December 2024, in Lawe Sagu Hulu Village, Lawe Bulan District, Southeast Aceh Regency, Aceh Province. The types of organic mulch used are: acacia and kirinyuh, and the doses used are: 0; 4.8; 9.6; 14.4 and 19.2 tons ha-1. The design used was a bifactorial randomized block design with 4 replications. The variables observed were: plant height, number of leaves, root wet weight and plant wet weight. The results of the research show that the kirinyuh type of organic mulch can increase plant height during the 20th and 30th daily periods. An organic mulch dose of 14.4 tons ha-1 can increase the height of soybean plants for the 20, 30 and 40 daily periods and increase the wet weight of soybean plants for the 20, 30, 40 and 50 daily periods. A dose of 19.2 tons ha-1 can increase the wet weight of roots for 20 daily periods. There was no interaction between the type and dose of acacia and kirinyuh organic mulch on the observation of soybean plant growth.
Variasi Dosis Mulsa Organik Akasia dan Kirinyuh dalam Mengendalikan Gulma pada Tanaman Kedelai : Studi Karateristik Hasil Tanaman Kedelai Ramut, Anuar; Harta, Rika Yusli; Pani, Mario; Sitinjak, Lentina; Gunawiati, Tika Puji
AGROSUSTAIN Volume 3 Nomor 1 (2025)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v3i1.4620

Abstract

The success of controlling weeds in soybean plantations, apart from being determined by the type, also determines the dose of mulch. This research aims to obtain the type and dosage of organic mulch to control weeds in soybean plantations. The research was carried out from August to December 2024, in Lawe Sagu Hulu Village, Lawe Bulan District, Southeast Aceh Regency, Aceh Province. The types of organic mulch used are: acacia and kirinyuh, and the doses used are: 0; 4.8; 9.6; 14.4 and 19.2 tons ha-1. The design used was a bifactorial randomized block design with 4 replications. The variables observed were: number of pods, number of seeds, seed weight, weight of 100 seeds and dry seed yield. The research results showed that an organic mulch dose of 19.2 tons ha-1 could increase the number of pods, number of seeds, seed weight and dry seed yield. Independently, the type of mulch and the interaction between type and dose had no effect on the observed soybean crop yields.
PENGARUH JARAK TANAM DALAM UPAYA MENEKAN PERTUMBUHAN GULMA PADA PERTANAMAN DAN PRODUKSI JAGUNG MANIS PADA VARIETAS EXSOTIC (Zea mays saccharate Sturt) Sitinjak, Lentina; Tarigan, Mulianta
AGROSUSTAIN Volume 2 Nomor 2 (2024)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v2i2.4751

Abstract

This research aims to determine the effect of planting distance on weed growth and production of Exsotic sweet corn (Zea mays saccharate Sturt) varieties. Weeds are one of the main inhibiting factors in the growth of sweet corn plants, which can have a negative impact on production if not controlled effectively. This research was carried out from May to July 2024 on Jalan Ngumban Surbakti Gang Sedap Malam no. This research method uses a non-factorial Randomized Block Design (RAK) which consists of 3 levels. The treatment factors are the first: J1 with a planting distance of 50 cm x 25 cm, J2 with a planting distance of 60 cm x 25 cm and J3 with a planting distance of 70 cm x 25 cm. The research data were analyzed using variance based on a linear model. Based on the research results, there is an influence of planting distance on the presence of weed vegetation in corn planting areas. The most types of weeds are found at planting distance J3 (70 x 25 cm) with 6 types of weeds with a Summed Dominance Ratio (SDR) of 1.14%, while the type of weed with the lowest SDR is found at planting distance J2 (60 x 25 cm) amounting to 0.83%. And planting distance has a significant effect on plant height at 2 and 8 WAP, stem diameter at 2 WAP, number of leaves at 2 WAP, production per sample, weight per plot and safe weight. Plants had the best growth at a planting distance of J3 (70 cm x 25 cm), while the highest production was at a planting distance of J1 (50 cm x 25 cm).
Pemasaran Minyak Kelapa Sawit (Crude Palm Oil) Menggunakan Strategi Analisis Swot Di PT. Perkebunan Nusantara III (Persero) Medan Fuady Harahap, Iffan; Harahap, Syamsuddin; Sitinjak, Lentina; Maulia, Era; Ramut, Anuar
JURNAL AGRIUST Vol 5 No 2 (2025): AGRIUST, Edisi July 2025
Publisher : Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The agricultural sector in Indonesia still has many opportunities and bright prospects that have not been explored. In the agribusiness system, agro-industry is one of the subsystems that together with other subsystems form agribusiness. Crude palm oil (CPO) is one of Indonesia's leading commodities that has a strategic role in the national economy, both as a source of foreign exchange and as a provider of employment. The purpose of this study was to determine the marketing strategy of the Crude Palm Oil (CPO) industry at PT Perkebunan Nusantara III (PERSERO) MEDAN using the survey method, data analysis was carried out using descriptive methods and SWOT analysis. The research results obtained describe the SO (Strengths-Opportunites) strategy, namely improving good quality in order to maintain consumer loyalty (S1, O1) and optimizing product suitability according to what consumers want in fostering good relationships (S2, O2). Empowerment of young human resources in providing the best service to consumers. and supporting infrastructure in maintaining good relations (S1, S4, O4). Utilizing a good product image in maintaining consumer loyalty as a great asset for the company (S3, O1, O4). The results of the SWOT analysis described using the SWOT diagram show that the company is in quadrant I which means that PT Perkebunan Nusantara III Medan has an aggressive strategy, namely the company must be able to develop existing strengths and increase and maintain existing opportunities
KARAKTERISTIK HASIL TANAMAN KEDELAI AKIBAT VARIASI DOSIS HERBISIDA OXYFLUORFEN Ramut, Anuar; Untari, Yulis; Sitinjak, Lentina; Sumoharjo, Deden; Nasrullah, Nasrullah
AGROSUSTAIN Volume 1 Nomor 2 (2023)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v1i2.2718

Abstract

The right dose of herbicide is able to control weeds, further increasing soybeancrop yields. This study aims to obtain oxyfluorfen herbicide doses to control weeds insoybean plantations. The doses used are: 0; 0.4; 0.8; and 1.2 kg b.a ha-1. The designused was a non-factorial randomized block design with 3 replications. The variablesobserved were: number of plant pods1, number of plant seeds1, plant seed weight1, anddry seed yield. The results showed that a dose of 0.8 kg b.a ha-1 herbicide increasedseed weight1 and yield of dry soybean seeds.
Pengaruh Intensitas Cahaya Matahari Terhadap Perkecambahan Dan Pertumbuhan Biji Gulma (Asystasia Gangetica L) Sitinjak, Lentina
AGROSUSTAIN Vol. 3 No. 2 (2025)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

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Abstract

This study aims to control the growth of Asystasia gangetica L plants and observe the effect of sunlight intensity on the germination and growth of Asystasia gangetica L plants. Asystasia gangetica L is often considered a weed that interferes with the growth of cultivated plants, including oil palm. This phenomenon is interesting to study because the growth of this weed can compete with cultivated plants. This research was conducted in the agricultural land of Santo Thomas Catholic University, Medan. North Sumatra. With an altitude of 2.5 - 37.5 meters above sea level (MDPL). This research began in August 2024 until October 2024. This research method uses a non-factorial RAK (Randomized Block Design) consisting of one treatment, namely sunlight intensity and consists of 5 levels, namely: N0: 100% light intensity, N1: 80% light intensity, N2: 60% light intensity, N3: 40% light intensity, N4: 20% light intensity with a linear model. Based on the research results, the intensity of sunlight has a significant effect on the observed parameters, namely germination at ages 1 and 2 MST, plant height at ages 2,4,6,8,10,12 MST, number of leaves at ages 2,4,6,8,10,12 MST, number of branches 4,6,8,10,12 MST, number of panicles 6,8,10,12 MST and number of tubes (capsules) 8,10,12 MST
Determining the Location of Nenas Processing Factories in North Sumatra Using Dijkstra Algorithm Siringoringo, Yan Batara Putra; Sitinjak, Lentina; Tarigan, Enita Dewi
Journal of Research in Mathematics Trends and Technology Vol. 6 No. 1 (2024): Journal of Research in Mathematics Trends and Technology (JoRMTT)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jormtt.v6i1.16978

Abstract

Pineapples have many health advantages. In addition to having many health benefits, this fruit can be processed into juice, jam, syrup, and chips. Pineapple is often eaten as fresh fruit and utilized primarily for its flesh. The community has not utilized this potential to its fullest extent. The production of pineapples is ranked second after oranges, according to statistics from the Central Statistics Agency of the North Sumatra Province for the year 2018-2019. This indicates that pineapples have a lot of potential for development both domestically and eventually for export. Determining the best route for transportation to the pineapple processing factory and the lack of one in North Sumatra provide the primary research challenges. In literary works, the factory's location is ascertained by analyzing production levels and utilizing Dijkstra algorithm programming to find the shortest transit path from the producing region to the factory. Using Google Maps, the 10 highest generating regions were identified for this study, with the district capital serving as the vertex and the distance between regions serving as the edge. According to the research findings, the pineapple processing plant was located in the middle of North Tapanuli Regency, and the shortest path between each region and the processing factory location was identified
Co-Authors Anuar Ramut Ardiyanus Zai Fuady Harahap, Iffan Giawa, Yohanna Widian Gunawiati, Tika Puji Harahap, Syamsuddin Harta, Rika Yusli Juli Lousiana Butar-butar Kurnia Selekta Etika Harefa Mahfirah, Adhaini Mario Pani Maulia, Era Nasrullah Nasrullah Ribka Kariani Br Sembiring Siadari, Nurika Siringoringo, Yan Batara Putra Sumoharjo, Deden Tarigan, Enita Dewi Tarigan, Mulianta Untari, Yulis