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Haris Setyaningrum
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INDONESIA
Gontor AGROTECH Science Journal
Published by Universitas Darussalam Gontor
ISSN : 2460495X     EISSN : 24775800     DOI : -
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Education
Gontor AGROTECH Science Journal (GASJ) is a sciencetific journal published biannual (june and december), covered but not limited issues in agronomy, integrated farming, sutainable agriculture, plant cultivation, soil science, plant protection, pest and diseases. GASJ published research article, short notes, review papers or review concept in above mentioned subjects
Arjuna Subject : -
Articles 155 Documents
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Optimasi Penggunaan Kembali Limbah Karbon Aktif Industri Vetsin Sebagai Biochar Menggunakan Taguchi Orthogonal Array L4: Optimising The Reuse Of Vetsin Industry Activated Carbon Waste As Biochar Using The Taguchi Orthogonal Array L4 Setiyo Irnanto, Anggra; Handoko, Fourry; Laksmana, Dimas Indra
Gontor Agrotech Science Journal Vol. 10 No. 2 (2024): December 2024
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v10i2.12585

Abstract

PT XY is a company producing vetsin in the food industry. The company makes extensive use of material resources for its industrial development, which has an impact on the environment. Waste-activated carbon is the result of the color absorption process of the solution. The problem is that the waste generated causes pollution to the company's environment and cannot be stored for long. The average carbon waste generated from January to December 2023 is 86.40 tonnes. Therefore, it is necessary to reuse activated carbon waste into biochar or carbon fertilizer. Processing strategy by conducting experiments using the Taguchi method. Problem identification with an approach that refers to the Responsible Waste Management Hierarchy, and limits the implementation of experiments to the principle of reuse. The Taguchi Orthogonal Array L4 method was chosen for the experimental design because it is more cost-effective than other DOEs and the signal noise is predictable. This research was conducted through experimental methods to know the effect of biochar planting media from activated carbon waste on the growth of kale plants (gr) and get optimal composition variations. As a result, an optimization design was obtained with wet carbon waste material, 25% biochar concentration, and bright light conditions, with an n-gain value of 4.49 resulting in a high improvement category. Comparison of biochar quality with Charcoal Powder from Workplant Store by SNI 06-3730-1995 standard. In biochar products from activated carbon waste, there is a glutamate content of 0.345 g/dL which is a good amino acid for plant growth.
Intensitas Serangan Kutu Kebul pada Tanaman Tomat dengan pemberian Pestisida Nabati Berbahan Dasar Daun Tembakau : Intensity of Whiteflies Attacks on Tomato with The Application of Tobacco-Based Botanical Pesticides Safitri, Betari; Putri, Sekar Utami; Febria, Dila; Darma, Wika Anrya
Gontor Agrotech Science Journal Vol. 10 No. 2 (2024): December 2024
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v10i2.12873

Abstract

Whiteflies are the main insect pests of Solanaceae plants, especially tomatoes. The need for tomatoes has not been met due to fluctuating production. Increasing tomato production to meet national needs can be done by controlling these two main insect pests. Control can be done using vegetable pesticides. These ingredients include tobacco leaves, citronella leaves, and Javanese chilies. This research was carried out in June - August 2024 at the Lampung State Polytechnic practicum area. The study used a randomized block design with 6 treatments and 4 replications. The six treatments consisted of six plant-based pesticide compositions based on tobacco leaves. The composition of the botanical pesticide made is A. 100% tobacco leaves, B. 50% tobacco leaves + 50% citronella leaves, C. 75% tobacco leaves + 25% citronella leaves, D. 50% tobacco leaves + 50% Javanese chili, E. 75% tobacco leaves + 25% Javanese chili, and F. 35% tobacco leaves + 35% citronella leaves, and 30% Javanese chili. The results obtained in this study were that all tobacco-based botanical pesticide treatments could reduce the whitefly population by 100%. No composition is most effective in suppressing whitefly populations on tomato plants.
Potensi Bakteri Simbion Rayap sebagai Agens Pengendali Hayati Penyakit Rebah Semai (Sclerotium rolfsii) pada Tanaman Kedelai secara In Vitro: Potential of Termite Symbiotic Bacteria as Biological Control Agents for Seedling Damping-Off Disease (Sclerotium Rolfsii) in Soybean Plants In Vitro Sakti, Vernanda Hani Pradana; Widura, Ardeva Duta; Maulana, Achmad Diva; Wiya, Zattury Alda; Rofiqoh, Risma Azizatur; Alif, Trisnani; Dinata, Gallyndra Fatkhu
Gontor Agrotech Science Journal Vol. 10 No. 2 (2024): December 2024
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v10i2.13110

Abstract

Termite symbiotic bacteria have potential as a biological agent that has not been extensively researched. This research aims to uncover the potential of termite symbiotic bacteria as a biological agent against the damping off disease (Sclerotium rolfsii) in soybean plants. The research was conducted in the plant protection laboratory, biosciences laboratory, and innovation garden of Jember State Polytechnic over 4 months. The study was designed based on a Completely Randomized Design (CRD) with 6 treatments, each repeated 4 times. The treatments included: P1 pathogenic fungus as control, P2-P4 pathogen with termite symbiotic bacteria with the highest inhibition percentage, and P6 pathogen S. rolfsii. The stages of the research began with the Isolation of Termite Symbiotic Bacteria, Antagonistic Screening Test, Hypersensitivity Test, and In Vitro Antagonistic Test. From the results of testing four isolates, the ability to inhibit the pathogen S. rolfsii was observed. These isolates are IR1A1, IR1A4, IR1A6, and IR4D2. The effectiveness of inhibiting S. rolfsii ranged from 28.97% to 95.79% in vitro. The most effective bacterial isolate in suppressing the pathogen and capable of surpassing fungicide treatment is isolated IR1A6, which has an inhibition rate of up to 95.79%.
Pengaruh Kombinasi Pupuk Organik Cair Termodifikasi Silika dan Varietas Terhadap Produktivitas Bawang Merah (Allium ascalonicum L.): The Combination Effects of Silica Modified Liquid Organic Fertilizer and Varieties on Shallot Productivity (Allium ascalonicum L.) Sholihah, Sofi Marwatus; Hamawi, Mahmudah
Gontor Agrotech Science Journal Vol. 10 No. 2 (2024): December 2024
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v10i2.13136

Abstract

Shallot plants (Allium ascalonicum L.) have short roots and soft leaves, potentially susceptible to environmental stress and pest attacks. Fulfillment of nutrients and variety selection as an alternative in increasing shallot production. The research aims to determine the effect of liquid organic fertilizer (LOF) modified silica (Si) and varieties on the productivity of shallot plants. The research was carried out at the Universitas Darussalam Gontor experimental field from November 2023 to January 2024. The research used a split-plot design with 2 factors. First factor: POC modified Si, P1 = POC 5 ml + Si 5 g.l-1, P2 = POC 10 ml + Si 5 g.l-1, P3 = without fertilizer (control). Second factor: variety, V1 = Bima Brebes, V2 = Thailand. Observation parameters were plant height, number of leaves, number of tillers, tuber diameter, wet and dry weight of tubers per plot (1 m-2), and wet and dry weight of the entire plant per plot (1 m-2). The observation data were analyzed using ANOVA and then tested further with 5% BNT. POC 5 ml + Silica 5 g.l-1 treatment increased the number of leaves, tillers, and wet and dry weight of shallot bulbs. The Bima Brebes variety has better plant height and diameter than the Thailand variety which is significantly different, while the number of tillers for the Thailand variety is greater. The Bima Brebes variety fertilized with POC 5 ml + Silica 5 g.l-1 increased the entire shallot plant's wet and dry weight (total bulbs and leaves).
Pengaruh Berbagai Dosis Pupuk Kalium dan Silika terhadap Produksi Cabai Rawit (Capsicum frutescens L.): The Effect of Various Doses of Potassium and Silica Fertilizer on Cayenne Pepper (Capsicum frutescens L.) Production Farida Jufri, Afifah; Nurrachman, Nurrachman; Pranggawan Azhari, Anjar; Jihadi, Amrul; Martia Dewi, Suprayanti
Gontor Agrotech Science Journal Vol. 10 No. 2 (2024): December 2024
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v10i2.13195

Abstract

The instability of cayenne pepper production is caused by the high rate of flower and fruit loss. This research aims to determine the effect of a combination of potassium and silica fertilizer on the production of cayenne pepper plants. The research was conducted in Rembige Village, Selaparang District, Mataram City for 6 months from April-October 2024. The materials used were Ori 212 variety, 20% liquid silica (SiO4), and KCl (60%K2O). The design used is Factorial RAK with two factors. The first factor is the dose of KCl fertilizer with 3 treatment levels, a dose of 150 kg ha-1 (K1), 300 kg ha-1 (K2) and 450 kg ha-1 (K3). The second factor is the concentration of silica fertilizer with 2 treatment levels, without silica (S0) and 2ml L-1 silica (S1). Each experimental unit was carried out 3 times and each repetition carried out observations on 5 plants. Observations and data collection include the number of productive branches, number of flowers, fruit set percentage, number of fruit per plant, and fruit weight per plant. The research results were analyzed using analysis of variance, and a 5% BNJ follow-up test. The results showed that there was an interaction between potassium and silica fertilizer treatments on fruit set parameters. Plants with a potassium dose of 150 kg ha-1 without silica gave the lowest fruit set yield, namely 60.74%.  Potassium and silica had significantly different effects on all observation parameters, where a dose of 300 kg ha-1 of potassium and 2 ml L-1 of silica gave the best results.

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