Gontor Agrotech Science Journal

Isolasi Bakteri Simbion Rayap Sebagai Agens Hayati Penyakit Rebah Semai Pada Tanaman Kedelai (Sclerotium Rolfsii) Secara In Vitro

Vernanda Hani Pradana Sakti Nanda — 2024-12-25

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%.

Optimasi Penggunaan Kembali Limbah Karbon Aktif Industri Vetsin Sebagai Biochar Menggunakan Taguchi Orthogonal Array L4

Anggra Setiyo Irnanto — 2024-12-25

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.

Pemanfaatan Lahan Di Bawah Tegakan Pepaya dalam Budidaya Sawi Pakcoy

Fitri Rahmadani — 2024-12-10

This research was conducted to utilize the land under the stand as a strategy to increase agricultural area in vegetable cultivation.This study used a Group Randomized Design (GRD) with 3 levels of treatment, namely land without shade, land under immature papaya stands and land under mature papaya stands with 9 replications simultaneously. The total population used was 648 populations with 12 samples of each replication determined by simple random sampling, so the total number of samples was 324. Data analysis was processed using Analysis of Variance (ANOVA) followed by Duncan Multiple Range 5%. (DMRT) test was tested using SPSS 26 software. The results showed that the utilization of land under papaya stands in the pakcoy mustard production business gave the results no significant effect on the observation of variable number of leaves, stem diameter, root crown ratio, and fresh weight of plants. The treatment of shade and no shade has no significant effect on pakcoy. So that in the future it can be applied to the cultivation of pakcoy.

Pengaruh Konsentrasi dan Lama Perendaman Larutan Polyethylene Glycol 6000 terhadap Panjang dan Jumlah Daun Bibit Sengon (Paraserianthes falcataria L.) dari Benih yang Terdeteriorasi

Muhammad Farhan Hasby — 2024-12-07

Wood production in Indonesia continues to increase every year. Sengon plant propagation is done using seeds. The problem with the propagation of sengon plants in Indonesia is the lack of availability of prime sengon seeds. This research aims to determine the effect of concentration, soaking time, and the interaction between concentration and soaking time of Polyethylene Glycol 6000 (PEG 6000) on the length and number of leaves of deteriorating sengon (Paraserianthes falcataria L.) seedlings. The research was carried out in the greenhouse of the Faculty of Agriculture, Universitas Pembangunan Nasional “Veteran” Jawa Timur. This research used a two-factor completely randomized design (CRD) with twenty treatment combinations and three replications. The first factor is the concentration of Polyethylene Glycol 6000 (PEG 6000) which consists of 0% peg 6000; 10% PEG 6000; 15% PEG 6000; 20% PEG 6000; and 25% PEG 6000. The second factor is the soaking time which consists of 6 hours, 12 hours, 18 hours and 24 hours. Observations include the height and number of leaves of the seedlings. The results showed that giving a concentration of 15% PEG 6000 gave better results for seedling height and number of leaves. The soaking time for PEG 6000 for 12 hours gave better results for the height of sengon seedlings and the soaking time for 18 hours gave better results for the number of leaves. The combination of concentration and soaking time for PEG 6000 showed no real interaction.

Pengaruh Kombinasi Pupuk Kandang Ayam dan Pupuk NPK Terhadap Pertumbuhan Tanaman Cabai Merah Besar (Capsicum annuum L.)

Nur Lathifa Meida — 2024-12-07

Big red chili is a vegetable plant that plays an important role for people in Indonesia as one of the kitchen spices and big red chili fruits have a high selling value. Plant growth and production can be influenced by land conditions to support plant growth and development, so there is a need for organic and balanced fertilization activities. This research conducted in Jabaran Hamlet, Pohkecik Village, Dlanggu District, Mojokerto Regency from October 2023 to February 2024. The research design used was a randomized block design (RAK) consisting of two factors with 3 replications. The first factor is the dose of chicken manure which consists of 15 tons/ha; 20 tons/ha; and 25 tons/ha and the second factor, namely the dose of NPK fertilizer consists of 75%; 50%; and 25%. The results of the study showed that the combination of 20 tons/ha of chicken manure and 25% NPK fertilizer had a real effect on plant height parameters and stem diameter, while the combination of 15 tons/ha of chicken manure and 50% NPK fertilizer had a real effect on the number of leaves.

Aplikasi Tandan Kosong Kelapa Sawit dan Limbah Cair Pabrik Kelapa Sawit pada Tanaman Kelapa Sawit Menghasilkan (Elaeis Guineensis Jacq)

Okta Nindita Priambodo — 2024-12-07

Oil palm is one of the important plantation commodities in Indonesia, with a plantation area reaching 14.33 million hectares and continuing to grow. This growth has led to an increase in the number of oil palm processing factories, which produce solid waste of Empty Fruit Bunches (EFB) and liquid waste of Palm Oil Mill Effluent (POME). If not processed properly, this waste can pollute the environment. However, this waste can be used as organic fertilizer that is rich in nutrients, reducing dependence on inorganic fertilizers, and saving costs. At the Rama-Rama Oil Palm Plantation, this waste is used as a soil conditioner and source of nutrients, with the hope of increasing oil palm productivity. This study aims to determine the effect of EFB and POME applications on oil palm productivity by comparing productivity between land applied with EFB and POME using the Independent T Test method at a real level of 5%. The results of observations show that POME and EFB applications affect the production of fresh oil palm fruit bunches, the number of fresh oil palm bunches, and the weight of oil palm bunches. POME application has a greater impact on the production of fresh oil palm fruit bunches, the number of fresh oil palm bunches, and the weight of oil palm bunches compared to EFB application and without POME and EFB application. The average production of fruit bunches in the EFB and POME blocks each month is above its production potential according to the land suitability level of class S2.

Efikasi Herbisida Parakuat Diklorida Terhadap Gulma di Perkebunan Kopi Tanaman Belum Menghasilkan

Resti Sari — 2024-12-07

Testing of the control power of the paraquat dichloride herbicide in suppressing weed growth in immature coffee cultivation was carried out in Sumber Jaya, West Lampung in May-August 2023. The research aimed to obtain an effective dose of paraquat dichloride and determine its phytotoxicity to coffee plants. The treatments consisted of 5 levels of paraquat dichloride dosage, namely 276 g ha^-1(B₁); 414 g ha^-1(B₂); 552 g ha^-1(B₃); 690 g ha^-1(B₄); and 828 g ha^-1(B₅) and compared with manual weeding treatment (B₆) and control (no treatment) (B₇). The research used a Randomized Block Design (RBD) with 4 repetitions. Based on the research results, it can be seen that paraquat dichloride at a dose of 552 - 828 g ha^-1was effective in suppressing the total weed growth of the dominant weeds Asystasia gangetica, Ageratum conyzoides, Synedrella nodiflora, Ottochloa nodosa, Paspalum conjugatum, and Richardia brasiliensis until 8 days after application (DAA). Application of paraquat dichloride at a dose of 414 - 828 g ha^-1was able to control the growth of A. conyzoides and S. nodiflora weeds until 8 DAA. Application of paraquat dichloride at a dose of 276 - 828 g ha^-1on immature coffee plants did not cause symptoms of poisoning.