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Benny Hidayat
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PERTANIAN TROPIK
Published by Universitas Sumatera Utara
ISSN : 26557576     EISSN : 23564725     DOI : https://doi.org/10.32734/jpt.
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Tropical Agriculture Journal (JPT) is a peer-reviewed online journal of Agriculture Postgraduate Study Program Universitas Sumatera Utara (USU). Journal is a result of research, or scientific reviews of researchers, students and agricultural institutions, and others related to agricultural studies in the tropical region. Published in Indonesian and English language with 3 volumes/year (April, August, December). These articles are indexed by Google Scholar, PKP Indexing, RootIndexing, Portal Garuda, Indonesian Publication Index (Garuda Portal), One Search Perpustakaan Nasional, BASE (Bielefeld Academic Search Engine), and Directory of Research Journal Indexing (DRJI), JPT is member of AJPI (Association of Indonesian Agriculture Journal, and strives to be a means of periodic, accredited, national scientific publications or reputable international publications through.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 378 Documents
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Cultivation techniques and feasibility of hydroponic lettuce farming by utilizing yards in Hidroponik Media Khotimah, Khusnul; Suci Nur Utami; M. Erwin Dwi Listyanto
Jurnal Online Pertanian Tropik Vol. 9 No. 3 (2022): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v9i3.10775

Abstract

Usahatani selada hidroponik dapat dikatakan efesien apabila mampu mengelola sumber daya yang dimiliki (input) untuk menghasilkan keuntungan yang maksimal. Penelitian ini bertujuan untuk menganalisis penerapan teknik budidaya selada hidroponik di Hidroponik Media, Kelurahan Pesantunan, Brebes dan menganalisis kelayakan usahatani selada hidroponik yang dilakukan di pekarangan dengan proyeksi analisis pendapatan, R/C ratio dan break even point (BEP). Penelitian ini dilaksanakan dengan metode survei yang berlokasi di Hidroponik Media Kelurahan Pesantunan, Brebes pada bulan Juli sampai Agustus 2022. Metode analisis data menggunakan analisis deskriptif pendekatan kuantitatif. Berdasarkan analisa penerapan teknik budidaya selada hidroponik dengan memanfaatkan pekarangan yang dilakukan oleh Hidroponik Media meliputi tahap persiapan, persemaian, transplanting, perawatan, panen dan pascapanen. Pemasaran selada di Hidroponik Media dilakukan secara langsung ke konsumen akhir dalam bentuk satuan per ikat. Berdasarkan hasil analisis data dapat dijelaskan bahwa usahatani selada hidroponik yang dilakukan dengan memanfaatkan pekarangan di Hidroponik Media menguntungkan (layak) dengan perolehan nilai R/C ratio 1,82 (> 1) atau pendapatan sebesar Rp. 1.239.400, dan nilai BEP produksi sebanyak 237 ikat.
Application of Turmeric Extract Botanical Insecticide On Feeding Activity And Mortality Of Spodoptera Litura Larvae Nurmaisah; Mellia Wasti Mau; Abdul Rahim
Jurnal Online Pertanian Tropik Vol. 10 No. 1 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i1.13564

Abstract

This research aimed to evaluate the effectiveness of turmeric extract as a botanical insecticide on the feeding activity and mortality of Spodoptera litura larvae. The method used in this study was a toxicity test using the leaf dip method. The experiment employed a completely randomized design with combinations of turmeric extract concentrations (0, 4, 8, 12, and 16 grams per liter of water) and instar types (1 and 2). The results showed that the application of turmeric extract on cabbage leaves reduced the feeding activity of instar 2 and 3 larvae. Meanwhile, the turmeric extract had an effect on the mortality of instar 2 and 3 larvae only at a concentration of 16%. The symptoms observed in the dead larvae were changes in color and body texture. The conclusion of this research is that 16% is the minimum effective concentration of turmeric extract on instar 2 and 3 S. litura larvae. This study should be continued on other instar types at the field scale.
Usage of Jatropha curcas as Botanical Insecticide in Controlling Insect Pest Asmanizar
Jurnal Online Pertanian Tropik Vol. 10 No. 1 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i1.14032

Abstract

Insect pests can cause damage to plants and cause losses. Insect pests on plants need to be controlled both preventively and curatively. Integrated control is an integration of several control methods that can be implemented in a compatible and comprehensive. Insect pest control using bio-active plant materials as an alternative to synthetic chemicals. Plants produce secondary metabolite compounds that can affect insects, including Jatropha curcas (Euphorbiaceae). Studies on several insect pests both in the laboratory and in the field against insect pests that attack the field and agricultural product storage warehouses have been carried out to determine their effectiveness. Jatropha curcas plants/parts of plant were applied after extraction treatment with various solvents (water, ethanol, methanol, acetone, petroleum ether, n-hexane and chloroform) or direct use. The results showed that J. curcas exhibited control effects against several types of insect pests from various insect pest. Laboratory study showed the insecticidal effect of J. curcas against Helicoverpa armigera, Spodoptera frugiperda, Plutella xylostella, Earias insulata, Spilarctia oblicua, Tuta absulata, Nezara viridula, Corcyra cephalonica, Maruca vitrata. Field study showed population reduction of Putella xylostella and Aphis craccivora. Whilst, on stored product study showed mortality of insect pest (Sitophilus zeamais, Rhyzopertha dominica, Callosobruchus chinensis and C. maculatus) and reduction of weight loss of stored products. Jatropha curcas has the potential as a pest insect control to be integrated into the IPM component. Keywords: Jatropha curcas, Botanical insecticide, Insect pest
The Effect of NAA, BAP and NAA, BAP Combinations on the Growth of In-vitro Culturally Promoted Leaves of Sansevieria ehrenbergii Fatikha Ajeng Safitr; Tengku Nurhidayah
Jurnal Online Pertanian Tropik Vol. 10 No. 2 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i2.9707

Abstract

Sansevieria is an ornamental succulent leaf plant of the family Agavaceae, having a beautiful and diverse shape and color. Propagation of Sansevieria can be done by tissue culture method with the addition of cytokinins and auxins to MS media.  The study used a complete randomized design consisting of 8 treatments, 3 tests, there were 24 experimental units. The observed parameters are when the callus appears, the color of the callus, the texture of the callus, the weight of the callus, the diameter of the callus, and the percentage of success in growing. Data analysis used variance analysis and tested using 5% DNMRT. The data is processed using a Statistical Analysis System (SAS).  The results showed that the application of NAA, BAP, and the combination of NAA and BAP affected the per-plant explant of  Sansevieria ehrenbergii leaves on all observation parameters.  The treatment of NAA 2 mg.l-1 + BAP 1 mg.l-1 gave effect tending to be faster when callus appeared with an average of  75.75 HST, NAA 1 mg.l-1 + BAP 2 mg.l-1 m.   and tends to be larger in callus diameter with an average of 0.9033 g and 19.133 mm and NAA 1 mg.l-1 + BAP 1 mg.l-1 gives a higher influence on the percentage of callus growth by an average of 100 %.
Efficiency of Nitrogen Fertilization in Shallots (Allium ascalonicum,.L) with the Addition of Cow Manure MUHAMMAD JUWANDA, MUHAMMAD JUWANDA
Jurnal Online Pertanian Tropik Vol. 10 No. 2 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i2.9830

Abstract

This research was conducted to determine the effect of nitrogen fertilizer and cow manure on the growth, yield, and efficiency of shallot plant growth. This research was conducted in the rice fields of Brebes, Brebes Regency. This study is a factorial experiment using a randomized block design (RAK) with two factors. The first factor is the application of nitrogen fertilizer 1/3 N (Urea) + 2/3 N (ZA) which consists of 4 levels, namely 0 N kg/ha (N0); 100 N kg/ha (N1); 200 N kg/ha (N2) and 300 N kg/ha (N3). The second factor is the application of organic material of cow manure with 4 levels, namely 0 t/ha (K0); 10 t/ha (K1); 20 t/ha (K2) and 30 t/ha (K3). There were 16 treatments, each treatment was repeated three times. plant height, number of leaves, leaf area (g), number of tillers per plant, number of tubers per plant, fresh weight of plant per clump (g), weight of tuber per clump (g), dry weight of plant per clump (g), weight of tuber dry per clump (g), tuber volume per clump (mL), N uptake (g), fertilization efficiency N (%). Observational data were analyzed with the F test to determine the diversity and if there was a significant difference, proceed with DMRT with an error rate of 5%. The results showed that the administration of a nitrogen dose of 200 kg N/ha was able to increase the growth and yield of shallots compared to other treatments. The best efficiency of N fertilization was in the application of 100 kg N/ha nitrogen fertilizer.
Morphological Characterization of Saprophyte Fungi on Cocoa Fruit Peel Litter Tanzil, Ahmad Ilham; Efendi, Soleudin; Dewi, Nilasari; Kurnianto, Agung Sih
Jurnal Online Pertanian Tropik Vol. 10 No. 1 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i1.10959

Abstract

Cocoa is an important commodity crop in Indonesia. However, current obstacles related to the problem of cocoa shell litter which is slow to decompose are an obstacle in plantation management. Therefore it is necessary to conduct research related to the exploration and identification of saprophytic fungi in cocoa pod litter. Samples of cocoa pod litter were taken at PTPN XII, while the isolation and identification processes were carried out at the Mycology Laboratory, Department of Plant Pests and Diseases, Faculty of Agriculture, Universitas Brawijaya. From the results of macroscopic and microscopic identification, nine isolates of saprophytic fungi were obtained consisting of seven genera, namely Candida sp., Penicillium sp., Fusidium sp., Rhizopus sp., Chepalosporium sp., Trichoderma sp.1, Trichoderma sp.2, Aspergillus sp., and Trichoderma sp. 3.
Effect of Fertilizer SP-36 And Kascing Fertilizer on the Growth of Peanuts (Arachis Hypogaea L) Sianturi, Tantri; Elli Afrida; Lisdayani; Mukti Hakim
Jurnal Online Pertanian Tropik Vol. 11 No. 1 (2024): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v11i1.11305

Abstract

Peanut production in Indonesia in 2016 amounted to 570,477 tons and in 2017 decreased by 495,396 tons. One of the important factors in increasing peanut production is fertilization. The application of phosphate fertilizers can also increase crop yields, especially in soils that lack this element. roots and required P. Vermicompost fertilizer contains various nutrients needed by plants such as gibberellins, cytokinins and auxins which play a role in increasing plant height. The purpose of this study was to determine the effect of growth and production of peanuts (Arachis hypogaea L.) on the application of SP 36 fertilizer and vermicompost fertilizer. This study used a factorial randomized block design with factor I giving POC Lamtoro leaves (P) with 4 levels, namely: P0: Control, P1: 200 cc/plant, P2: 300 cc/plant, P3: 400 cc/plant. Factor II Fertilizer application SP 36 (F) with 4 levels, namely: Fo: Control, F1: 25 g/plot, F2: 50 g/plot and F3: 75 g/plot. The results showed that the application of SP 36 fertilizer and the application of vermicompost fertilizer and the interaction of the two factors had no significant effect on the observed parameters of the number of plant branches.
Efficacy of endophytic fungi isolated from Azadirachta indica roots against Alternaria causing early blight of tomato Ododa, Kennedy Okoth; Githae, Eunice; Muraya, Moses
Jurnal Online Pertanian Tropik Vol. 10 No. 2 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i2.11545

Abstract

Many medicinal plants are reported to host a myriad of beneficial endophytic microbes. Among the well-known medicinal plants is Azadirachta indica (Neem; Family Meliaceae), which has gained worldwide importance due to its extensive array of therapeutic and insecticidal qualities. The use of A. indica extracts in the treatment of plant pathogens has been the subject of extensive investigation, but its endophytic microbes as potential biocontrol agents have received very little attention. In this study, the efficacy of endophytic fungi isolated from A. indica roots against Alternaria, which causes tomato early blight, was examined. Isolation and characterization of Alternaria species and endophytic fungi were done in the laboratory using standard procedures. An in-vitro assay of the endophytic fungi isolates against Alternaria was conducted in a complete randomized design in order to determine the percentage zone of inhibition. The colonies of Alternaria isolates were fast-growing, black to grayish-brown, and suede-like. The conidial length from different isolates was statistically significant (p ˂ 0.05) and ranged from 15 μm to 46 μm. The conidial widths were not statistically significant (p > 0.05) and ranged from 8 μm to 15 μm, while the conidial area ranged from 120 μm to 690 μm. A total of seven species of endophytes were isolated from the root of Azadirachta indica: Phoma, Actinomycetes, Chaetomium, Trichoderma, Verticillium, Penicillium, and Fusarium. There was a significant difference in the zones of inhibition (p ˂ 0.05), which ranged from 0.0 mm (Actinomycetes) to 3.44 mm (Trichoderma). These isolates could be used to create brand-new organic antifungal substances that are efficient against a variety of plant fungal pathogens.
The Effectiveness of Beneficial Plants in Oil Palm (Elaeis guineensis Jacq.) Area in Reducing the Attack Rate of Oil Palm Leaf-Eating Caterpillar (oplec) at PT. Socfindo Mata Pao Gardens. Novita, Aisar; Merlyn Mariana; Windy Manullang; M. D. P. Sarumaha; Advent
Jurnal Online Pertanian Tropik Vol. 10 No. 2 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i2.12068

Abstract

The Effectiveness of Beneficial Plants in Oil Palm (Elaeis guineensis Jacq.) Areas in Reducing the Attack Rate of Oil Palm Leaf-Eating Caterpillars (OPLEC) At PT. Socfindo Pao Eye Gardens. The purpose of this study was to determine the effectiveness of beneficial plants in the oil palm plantation area (Elaeis guineensis Jacq.) in reducing the level of attack of the oil palm leaf-eating caterpillar (OPLEC) in PT Socfindo Kebun Mata Pao and to examine the factors that affect the level of Attack of the Palm Leaf Feeding Caterpillar (OPLEC) at PT Socfindo Kebun Mata Pao. This assessment was carried out from November to June 2022. The data collection method was carried out using primary and secondary data. The results showed that beneficial plants were more effective in reducing the attack rate of caterpillars that eat oil palm leaves in accordance with the SOP of PT. Socfindo Pao Eye Gardens. The factors that influence the increase in OPLEC pest attacks are climatic conditions (and physiological conditions.
Land suitability Assessment Rubber Commodities ( Hevea brasiliensis) In Nias Selatan District Scale 1: 250,000 Sebayang, Lukas
Jurnal Online Pertanian Tropik Vol. 10 No. 2 (2023): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v10i2.12210

Abstract

South Nias district was the new district developed of Nias district in 2003. South Nias was part of area hit earthquake and tsunami in 2004 and 2005. The district was the producer of rubber which second superiority commodities after coconut. There were 29,125 Ha of rubber area in South Nias (Statistic of Sumatera Utara Province. 2021). This research activity was carried out in 6 subdistricts in Nias Regency in January 2019 - November 2019. Assessment of land suitability was needed in order to know a directions of superiority commodities development area. This assessment was conducted by using ALES (Automated Land Evaluation System). SDPLE (Standard Procedure for Land Evaluation) data was imported to ALES program. Land evaluation result was show in spatial form. This form made by imported tabulation data to GIS (Geographical Information System) form. Suitability land maps (scale 1 : 250.000) present based on each commodities by ArcView program. Keywords : Suitability land; rubber; South Nias

Page 34 of 38 | Total Record : 378

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