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INDONESIA
Jurnal Agrotek Tropika
Published by Universitas Lampung
ISSN : 23374993     EISSN : 26203138     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Agrotek Tropika (JAT) is a journal of science in the field of agrotechnology which covers several fields of science such as Agronomy, Horticulture, Soil Science, and Plant Pests and Diseases. Journal of Tropical Agrotek published since 2013 and published three times in one year ie in January, May, and September. Journal of Tropical Agrotek published by Department of Agrotechnology, Faculty of Agriculture, University of Lampung in cooperation with Agroteknologi Association of Indonesia (PAGI) Lampung.
Arjuna Subject : -
Articles 811 Documents
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INCREASING CHLOROPHYLL CONTENT AND YIELD OF EGGPLANT ON VARIOUS MAGNESIUM DOSES Dewi HS, Endang Sri; Tanari, Yulinda; Pangli, Marten; Toyip, Toyip
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.9815

Abstract

Eggplant is a vegetable that is rich in vitamin and antioxidant so is beneficial for health. Base on this, demand for eggplant continues to increasing. Eggplant production can be increased by increasing the chlorophyll content with additional doses of magnesium (Mg). Mg is the main component of chlorophyll and plays an important role in various plant metabolic pathways. Puprpose of this study  determine effect of Mg on increasing Chlorophyll content and its correlation with increasing eggplant yields. This research was conducted in August-Desember 2023 in the Integrated Garden Rumah Tani Nusantara located in Kayamanya Village, Poso. Central Sulawesi. This Study was designed in CRBD, treatment with 6 levels of Mg doses, namely without Mg doses as control. 0.5 g.polybag-1, 1 g.polybag-1, 1.5 g.polybag-1, 2 g.polybag-1, 2.5 g.polybag-1 with three replications. The parameters observed were chlorophyll content ( chlorophyll a, b and Total), plant height and yield component (number of fruits, fruit weight and Fruit Length). The results showed that the Mg dose treatment increased the chlorophyll content of eggplant leaves, both chlorophyll a, b, plant height and yield components. There is a correlation between increased eggplant yields and magnesium doses.
SOIL FERTILITY AND QUALITY STATUS FOR BALANCED FERTILIZATION-BASED AGRICULTURAL LAND MANAGEMENT IN MENDOYO DISTRICT Vandani, Yayan; Trigunasih, Ni Made; Sumarniasih, Made Sri
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.9933

Abstract

Soil fertility and quality have declined due to conventional farming practices that neglect fertilization. To restore soil fertility and quality, an evaluation is being conducted to determine balanced fertilization doses. This research aims to identify the soil fertility and quality status in the Mendoyo Subdistrict so as to provide recommendations for balanced fertilization in specific agricultural areas. The methods used were surveying and laboratory soil testing. The results demonstrated that the Mendoyo Subdistrict exhibited a combination of moderate and high soil fertility levels. The soils with moderate status were located in HLU (Homogeneous Land Units) I, II, V, VIII, IX, and X, while the those with high ones were located in HLU III, IV, VI, and VII. Moreover, the subdistrict exhibited varying levels of soil quality, ranging from poor to moderate, good, and very good. The poor-quality soil was located in HLU I, the good ones were located in HLU II, III, and IV, and the very good ones were located in HLU V, VI, VII, VIII, IX, X. The limiting factors in this research included texture, C-organic, nutrients (N, P, and K), and C-biomass. Meanwhile, the advanced regression and correlation tests indicated that C-organic was the most influential factor in determining soil fertility and quality, thus resulting in a recommended organic fertilizer dose of 2 t ha-1 for rice (Oryza sativa L), 15 kg plant-1 th-1 for cocoa (Theobroma cacao L) and robusta coffe (Caffea canephora), and 10 t ha-1 for coconut (Cocos nucifera) and banana (Musa paradisiaca L). Inorganic fertilizer doses vary depending on the soil's N, P, and K content.
FUNGICIDE SENSITIVITY OF XYLARIA ISOLATES ASSOCIATED WITH ROOT AND BASAL STEM ROT OF SUGARCANE Indriani, Rosa; Maryono, Tri; Evizal, Rusdi; Prasetyo, Joko; Pranata, Heru; Saefudin, Saefudin
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.10665

Abstract

Root and basal stem rot is one of important diseases in sugarcane plantations in South Sumatra and Lampung. This disease is caused by Xylaria sp. The study is aimed to determine the fungicides sensitivity of Xylaria sp. which is associated with root and stem rot disease of sugarcane. The Xylaria sp. was isolated from the stroma and diseased sugarcane stems obtained from PT Gunung Madu Plantations (GMP). The fungicides used were plant base fungicides (puyangan and jamuan) and synthetic fungicides (carbendazim, mancozeb, and chlorothalonil). The Xylaria sp. sensitivity test was carried out by the poison food technique. The doses used are; puyangan and jamuan (10 g/100 mL), carbendazim (2 g/L), mancozeb (3 g/L), and chlorothalonil (1 g/L). The rate of sensitivity change of Xylaria sp. on fungicides was test by subculturing the Xylaria sp. in media containing fungicides at a dose of 9 g/100mL (puyangan and jamuan), 0.1 g/L (carbendazim), and 0.5 g/L (mankozeb) three times. The results showed that the Xylaria sp. which is associated with root and basal stem rot disease of sugarcane is still very sensitive to fungicides puyangan, jamuan, carbendazim, and mancozeb at recommended doses, but is very resistant to chlorothalonil on 2x the recommended dose. The results of the rate of change in sensitivity of Xylaria sp. to fungicides showed that isolate A tended to change more quickly compared to isolate B and isolate C.
POTENTIAL OF TRICHODERMA AS A PRESERVATIVE FOR SHALLOT BULB AND BIOFUNGICIDE FOR SHALLOT SEEDS Sutarman, Sutarman; Budiandri, Rahma Utami; Rosyadiana, Nanda Alya; Pratiwi, Yesi
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.10720

Abstract

This study aims to determine the fungi that cause rotting of shallot bulbs (Allium cepa) in storage and to measure the ability of Trichoderma esperellum in preserving bulbs and protecting shallot seeds from rotting pathogens. The initial stage is to ensure the isolated pathogenic fungi with the Koch Postulate test. The next stage is the inhibition test between Trichoderma and pathogenic fungi, clove preservation, and the test of the protection ability of shallot seeds. The results showed that the cause of rot was Penicilium sp. In the in vitro test, T. esperellum was able to inhibit the growth of pathogen colonies by 61.9 ± 1.2% and increase the growth of its own colonies by 172.1 ± 10.8% respectively at 96 and 48 hours after inoculation. The application of T. esperellum suspension and filtrate suppressed bulb rot by 71.5 and 67.9% respectively in storage and increased germination by 127.8 and 122.2% compared to without Trichoderma. The use of Trichoderma filtrate can be used as an active ingredient in biopesticides for preserving cloves and protecting red onion seeds
PHENYLALANINE-INDUCED MODULATION OF CALLUS CHARACTERISTICS AND SECONDARY METABOLITE ACCUMULATION IN Ocimum basilicum L. UNDER IN VITRO CONDITIONS Suminar, Erni; Mubarok, Syariful; Budiarto, Rahmat; Yulianto, Fiky; Nuraini, Anne; Yuniarti, Anni; Kusumadewi, Vira; Meliansyah, Rika; Kurnia, Dikdik; Julaeha, Siti
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11044

Abstract

Basil (Ocimum basilicum L.) is widely used in traditional medicine due to its rich content of phenolic and flavonoid compounds. However, the natural production of these metabolites is limited. Callus culture offers a controlled method to enhance their accumulation, with medium composition, particularly precursor supplementation, playing a critical role. Phenylalanine, an aromatic amino acid, is a key precursor in the biosynthesis of phenolics and flavonoids via the shikimate pathway. This study aimed to evaluate the effect of phenylalanine on callus growth and the accumulation of total phenolic and flavonoid compounds in basil. The experiment was conducted at the Plant Tissue Culture Laboratory, Faculty of Agriculture, Universitas Padjadjaran, using Murashige and Skoog (MS) medium with phenylalanine concentrations of 0, 1.3, 1.6, and 2 g.L-1, each replicated six times. Results showed that phenylalanine treatments caused brown coloration, compact callus texture, and inhibited growth, as indicated by reduced fresh and dry weights. The 1.6 g.L-1 treatment produced the highest total phenolic content, while the 2 g.L-1 treatment yielded the highest flavonoid content. These findings suggest that phenylalanine can enhance secondary metabolite accumulation in basil callus, although it may suppress biomass growth.
PENGARUH OLAH TANAH DAN PEMUPUKAN N JANGKA PANJANG TERHADAP KANDUNGAN KARBON ORGANIK, NITROGEN TANAH DAN SERAPAN N SERTA PRODUKSI PADA PERTANAMAN JAGUNG DI TANAH ULTISOL TAHUN KE-34 Yonathan, Yanda; Lumbanraja, Jamalam; Buchari, Henrie; Afrianti, Nur Afni
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11390

Abstract

Ultisol merupakan salah satu jenis tanah di Indonesia yang mempunyai sebaran luas. Namun Ultisol merupakan salah satu jenis tanah di Indonesia dengan sebaran luas. Ultisol merupakan tanah yang memiliki tingkat kesuburan rendah sehingga perlu upaya perbaikan agar dapat dimanfaatkan secara optimal. Tujuan penelitian adalah mengetahui pengaruh olah tanah jangka panjang, pemupukan N, dan interaksi antara olah tanah jangka panjang, dan pemupukan N terhadap kadar C-organik tanah, N total tanah, serapan N, serta produksi tanaman jagung di Ultisol. Penelitian dilaksanakan pada 12 September 2021 – 30 Januari 2022 di Kebun Percobaan Polinela. Penelitian ini menggunakan RAK dengan 2 faktor, yaitu pemupukan nitrogen (N0 = tanpa pemupukan, N2 = pemupukan 200 kg N ha-1), olah tanah (T1 = olah tanah intensif, T2 = olah tanah minimum, T3 = tanpa olah tanah). Data hasil penelitian sifat tanah analisis tanah awal dan akhir dilakukan untuk mengetahui kandungan N-total tanah, C-organik tanah, C/N, dan pH tanah. Analisis data tanah dilakukan secara kualitatif menggunakan kriteria penilaian hasil analisis tanah. Data Sampel tanaman berupa (produksi berat kering, basah serta serapan N tanaman) di uji dengan menggunnakan anara dan dilanjutkan dengan unji BNT 5%. Tanpa olah tanah dan tanpa pemupukan N mampu meningkatkan C-organik tanah dan N-total tanah. Serapan N brangkasan jagung tertinggi yaitu pada perlakuan olah tanah minimum. Pemupukan N tidak mampu meningkatkan kandungan C-organik, tetapi dapat meningkatkan N-total tanah. Pemupukan N mampu meningkatkan produksi berat kering total dan berat basah total tanaman serta N terangkut total. Tidak terdapat interaksi antara pengaruh pemupukan N dan olah tanah terhadap serapan N dan produksi tanaman jagung.
EFFICACY OF GLYPHOSATE ISOPROPYLAMINE HERBICIDE 525 G/L ON WEED CONTROL IN IMMATURE OIL PALM PLANTATIONS Hirda, Adis; Herry Susanto, Herry Susanto; Sugiatno, Sugiatno; Pujisiswanto, Hidayat
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11402

Abstract

The presence of weeds in immature oil palm plantations needs to be controlled, otherwise it results in competition with the main crop. Herbicide active ingredients, especially glyphosate, are widely used to reduce weed growth in oil palm plantations.. This study aimed to determine the dose of isopropylamine glyphosate herbicide that effectively controls weeds in oil palm plantations, changes in weed composition, and phytotoxicity due to the application of isopropylamine glyphosate herbicide in immature oil palm plantations. This trial was conducted in Oil Palm Plantation, Karang Anyar Village, Jati Agung District, South Lampung Regency and Weed Laboratory, Faculty of Agriculture, University of Lampung, September - December 2022. The trial was conducted using a randomized block design (RBD) with 4 replications and 6 treatments, namely several dose levels of isopropylamine glyphosate herbicide (787,5; 1.050; 1.312,5; and 1.575 g ha-1), mechanical weeding, and untreatment. Homogeneity of data variance was tested with Bartlett's test, additivity of data was tested with Tukey's test, and differences in treatment mean values were tested with the Least Significant Difference (LSD) test at the 5% level.The trial showed that isopropylamine glyphosate herbicide doses of 787,5 - 1.575 g ha-1 effectively controlled total weeds, grasses (Axonopus compressus and Ottochloa nodosa), and sedge (Cyperus kyllingia), as well as broad leaves (Asystasia gangetica and Melastoma affine) at dose levels of 1.312,5 and 1.575 g ha-1 at (4, 8, and 12) week after application, isopropylamine glyphosate herbicide doses of 787,5 - 1.575 g ha-1 caused changes in weed composition, and did not cause poisoning of immature oil palm plants after being applied to the crop disk until 12 week after application.
THE EFFECTIVENESS OF LECANICILLIUM LECANII, BETEL LEAF EXTRACT AND COPPER OXIDE TO CONTROL RUST DISEASE ON COFFEE LEAF DISCS IN THE LABORATORY Azrah Humairah Sirait; Ginting, Cipta; Titik Nur Aeny; Tri Maryono
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11416

Abstract

The coffee industry is still impacted by the leaf rust disease caused by Hemileia vastatrix B. et Br. Coffee plants are damaged and money might be lost as a result. The purpose of this study was to observe the effects of copper oxide, betel leaf extract, and the fungus Lecanicillium lecanii on lab-grown coffee leaf discs in terms of disease control, namely coffee leaf rust. To measure efficacy, coffee leaf discs were used. In a completely randomized design (CRD), four treatments were used with five replicates for this experiment. The treatments that were used were L lecanii, betel leaf extract, copper oxide, and a control group. Observed parameters on coffee leaf discs were incubation length, sickness incidence, and disease severity. For data assessment, we utilized Barlett's test, and for data additiveness, we used Tukey's test. After analyzing the data using ANOVA, Duncan's Multiple Range Test was conducted at the 5% level. Results showed that L lecanii, copper oxide, and betel leaf extract may all extend the incubation period. In the betel leaf extract group, signs of coffee leaf rust disease appeared 14 days after inoculation (DAI), in the copper oxide group, 21 days after inoculation (DAI), and in the control group, 5 days after inoculation (DAI). In addition, L lecanii, betel leaf extract, and copper oxide significantly reduced the frequency of sickness and the severity of rust disease on coffee leaf discs in the lab 1-4 weeks after inoculation (WAI).
EFFECTIVENESS OF KAFFIR LIME (Citrus hystrix D.C.) AND BASIL (Ocimum sanctum L.) LEAF POWDER ON Callosobruchus chinensis L. (Coleoptera; Chrysomelidae) MORTALITY IN GREEN BEANS Pramono, Sudi; Helina, Selvi; Purnomo, Purnomo; Damayanti, Fransisca
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11470

Abstract

Storage can determine the quality of green beans, therefore, to prevent the product from being attacked by warehouse pests, good storage and packaging are needed. The main pest that attacks green beans during storage is Callosobruchus chinensis L. This study aims to test the effectiveness of kaffir lime leaves and basil against Callosobruchus chinensis L. pests and weight loss of green bean seeds attacked by C. chinensis. This study used a completely randomized design (RAL) with 4 treatments and 4 replications, namely control, kaffir lime leaves 8 g, 10 g, and 12 g, basil leaves 8 g, 10 g, and 12 g. The data obtained were analyzed using a 5% level of ANARA and then continued with a 5% DMRT test. The results obtained after 28 HSA observations were that kaffir lime leaf powder at a dose of 12 g caused the highest C. chinensis mortality and the lowest reduced the weight loss of green beans. Basil leaf powder treatment at a dose of 12 g caused the highest C. chinensis mortality and the lowest reduction in green bean weight loss for 28 HSA. This research shows that kaffir lime leaves and basil have the potential to control C. chinensis during storage.
THE APPLICATION EFFECT OF EMPTY PALM OIL BUNCH ORGANIC FERTILIZER RESIDUE AND NPK FERTILIZER IN CORN PLANTING ON SANDY SOIL Salsabilla, Cindy Fidia; Afandi, Afandi; Wiharso, Didin
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11480

Abstract

Conditions on sandy soil aggregate stability are generally classified as weak. This is because the sandy soil itself has a low organic matter content so that only a few plants can grow on the soil. Therefore, efforts must be made to improve the aggregate stability of the soil. The way that can be done is by adding organic fertilizer of empty palm bunches and also NPK fertilizer. This research was conducted from July 2023 to March 2024 in Marga Agung Village, South Lampung Regency. This study itself was carried out by applying a Randomized Block Design consisting of 7 treatments, namely A = Control; B = 1 NPK (350 kg/ha Urea, 100 kg/ha SP-36, 75 kg/ha KCl); C = ¾ NPK; D = ¾ NPK + 2 tons/ha Organic Fertilizer; E = ¾ NPK + 4 tons/ha Organic Fertilizer; F = ¾ NPK + 6 tons/ha Organic Fertilizer; G = 1 NPK + 8 tons/ha Organic Fertilizer. Then for the observation variables themselves, which include aggregate stability, c-organic, soil texture, and soil density. The results itself was analyzed using quantitative and qualitative methods by contrasting the analysis data which are contained determination class criteria. The results indicated that aggregate stability does not have a significant effect the residue of organic fertilizer of oil palm empty fruit bunches (TKKS) and NPK fertilizer. Treatment E = ¾ NPK + ½ Organic Fertilizer has the best aggregate stability compared to other treatments.

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