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INDONESIA
Jurnal Agrotropika
Published by Universitas Lampung
ISSN : 02167662     EISSN : 27457737     DOI : 10.23960
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Scientific article dealing with broad aspects of tropical agronomy including crop production, horticulture, plant pests and diseases, post-harvest, sustainable agriculture, soil science, climatology, ecology, biodiversity, and ethno-agronomy.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 252 Documents
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Pengaruh Dosis Pupuk NPK Phonska Plus dan Trichoderma terhadap Pertumbuhan dan Produksi Tanaman Melon (Cucumis melo L.) Restua Mahardday Situmorang; Kus Hendarto; Yohannes Cahya Ginting; R.A. Diana Widyastuti
JURNAL AGROTROPIKA Vol 21, No 1 (2022): Jurnal Agrotropika Vol 21 No 1, Mei 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v21i1.5527

Abstract

This study aims to evaluate the growth and production of melons due to the administration of trichoderma sp and the addition of a dose of NPK fertilizer and the interaction of trichoderma sp. with Phonska NPK fertilizer. This research was conducted in the Integrated Field Laboratory, Faculty of Agriculture, University of Lampung from January to March 2021. The treatments were arranged in a 2x4 factorial with 3 replications in a Randomized Block Design (RAK). The first factor is the first factor is trichoderma (without trichoderma and 20 g/plant), the second factor is Phonska NPK fertilizer dose (without NPK, 30 g/plant, 60 g/plant and 90 g/plant). The results showed (1) Application of trichoderma 20 g/plant increased plant stem length (124.45), melon diameter (104.39 mm) higher than without trichoderma application, plant stem length (122.74cm), melon diameter (100, 13 mm), as well as melon weight per plant increased from 666.10 g (without trichoderma application) to 717.05 g (20 g/plant). (2) Application of NPK phonska fertilizer at a dose of 60 g/plant increased plant stem length (125.10 cm), melon diameter (108.70 mm) higher than without NPK application (123.23 cm) (95.82 mm), Likewise, melon weight per plant increased from 649.83 g (without NPK fertilizer) to 748.18 g. (3) Application of trichoderma sp. 20 g/plant in synergy with the application of NPK phonska fertilizer at a dose of 60 g/plant gave the best results based on the variables of plant stem length (127.30 cm), melon diameter (115.00 mm) and melon weight (795.63 g) compared to without application of trichoderma sp and without application of fertilizer the average length of plant stems (123.17 cm), melon diameter (92.77 mm) and melon weight (663.10 g).Keywords : Melon, fertilizer,yield, trichoderma
Pengaruh Kemarau terhadap Pertumbuhan dan Produksi Tujuh Klon Kakao Sugiatno Sugiatno; Ali Fitrah Hansyah; Rusdi Evizal; Sri Ramadiana
JURNAL AGROTROPIKA Vol 21, No 1 (2022): Jurnal Agrotropika Vol 21 No 1, Mei 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v21i1.5830

Abstract

Long droughts and high rainfall as a result of climate change have an effect on reducing cocoa yields. This study aimed to study the effect of the 2019 drought on the growth and production of seven cocoa clones. The research was conducted from September 2019 to February 2020 in Cibinong Village, Way Ratai District, using a Randomized Block Design (RAK) with 3 replications and treatment of seven cocoa clones, namely BCL clones, BL 50, MCC 02, Sul 1, Sul 2, ICCRI 01, and ICCRI 03. The cacao plants used were 5 years old after side grafting using rootstocks of local varieties from seeds, with a monoculture planting system. The results showed that in 2019 Lampung Province experienced a long dry season with 7 dry months, namely from May to November, with a total rainfall of 1718 mm, and in August and September it did not rain at all. Clones had an effect on the number of cocoa leaves in November and February, but had no significant effect on the number of leaf flushes, number of flowers, number of pistils, and number of fruit. Long drought reduced leaf flush count, flower count, pistil number, and the number of small, medium, and large fruit. The long drought caused minor crop failures in the current year (in October) and major crop failures the following year (April). Key words : Cacao, clone, drought, growth, production 
Studi Bahan Kemasan terhadap Viabilitas Benih Kedelai (Glycine max [L.] Merril) Pascasimpan Dua Belas Bulan di Ruang Simpan Suhu Rendah Ermawati Ermawati; Niar Nurmauli; Paul Benjamin Timotiwu; Restu Deni Bimantara
JURNAL AGROTROPIKA Vol 21, No 1 (2022): Jurnal Agrotropika Vol 21 No 1, Mei 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v21i1.5509

Abstract

Soybean is a commodity that is a source of vegetable protein that is easily obtained at a low price. The factor that affects low soybean productivity in Indonesia is the lack of use of quality seeds by farmers. Efforts to maintain the shelf life of soybean seeds can be done by using good packaging materials. The purpose of this study was to determine the effect of packaging materials that have different characteristics under low temperature storage conditions on the viability of soybean seeds after twelve months of storage. This research was carried out at the Seed and Plant Breeding Laboratory, Faculty, Agriculture, University of Lampung from October 2019 to June 2020. The treatment design was a single and unstructured factor, namely packaging material (b). The treatment of packaging materials consisted of aluminum foil (b1), polyethylene (b2), polypropylene (b3), brown envelope paper (b4), ordinary plastic (b5), calico fabric (b6). The packaging materials for six treatments were arranged in a randomized block design (RAK) with four replications. The results of this study showed that the viability of seeds was high in aluminum foil, polyethylene, polypropylene, ordinary plastic, envelope paper, and calico packaging materials in low temperature storage in an air-conditioned storage room after twelve months of storage. Twelve months post-stored seed viability was indicated by the germination rate of 87.48%; maximum growth potential of 96.25%; germination speed 30.96%; strong normal sprouts 81.19%; hypocotyl length 11.99 cm; dry weight of normal sprouts 31.82 mg; water content 7.30%; and electrical conductivity of 244.96 S/cm. Key words: viability, soybean seed, storage, packaging material, low temperature
Pengaruh Komposisi Media Campuran Tanah dan Biochar Sekam Padi terhadap Pertumbuhan Krisan (Chrysanthemum spp.) Henni Elfandari; Betari Safitri
JURNAL AGROTROPIKA Vol 21, No 1 (2022): Jurnal Agrotropika Vol 21 No 1, Mei 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v21i1.5655

Abstract

Chrysanthemum (Chrysanthemum spp.) is one of the ornamental plants that has the potential to be developed in Indonesia. In general, chrysanthemums are cultivated as cut flowers and potted flowers. The diversity of colors and shapes of chrysanthemums and the low rate of flower wilting are the main attractions of chrysanthemum plants. The demand for chrysanthemum flowers increases by 25% every year so that cultivation and production technology is needed to meet the needs of the national market. Fertilization is the addition of nutrients to plants to increase plant growth and development. One of the materials that can be given to plants is biochar. This study used one treatment in a Randomized Block Design (RAK) with four replications. The treatment of  the composition of the growing media consisted of 4 levels. Observations were made on the growth of chrysanthemum plants including plant height and number of leaves. The results showed that the planting media treatment with a composition of 50% soil + 50% biochar produced the best plant height and number of leaves compared to other treatments. This shows that the addition of biochar with the right ratio in the growing media can increase the growth of chrysanthemum plants.
Optimasi Konsentrasi Paklobutrazol untuk Respons Pembungaan Tanaman Jambu Biji 'Kristal' Siti Sarah Yutamimah; R. A. Diana Widyatuti; Setyo Dwi Utomo; Yohannes Cahya Ginting
JURNAL AGROTROPIKA Vol 22, No 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.7449

Abstract

The advantages of 'Crystal' guava in Indonesia provide opportunities for farmers to cultivate and increase their production. Various methods of cultivation have been developed to increase the production of 'Crystal' guava, one of which is the use of Growth Regulators. Paclobutrazol is a plant PGR that regulates flowering outside the harvest season so that the production of 'Crystal' guava fruit can be maintained. The purpose of this study was to determine the best concentration of the effect of Paclobutrazol treatment in increasing the flowering of 'Crystal' guava plants. The research was conducted from August 2021 to March 2022 in Rajabasa Lama 1 Village, Labuhan Ratu District, East Lampung Regency. The treatment was carried out in a factorial manner using a single factor randomized block design with three replications so that 36 experimental units were obtained. The first factor was Paclobutrazol (A) which consisted of 6 treatment levels, there are A1 (0 ppm), A2 (4000 ppm), A3 (6000 ppm), A4 (8000 ppm), A5 (10,000 ppm), A6 (12,000 ppm). Paclobutrazol treatment with a concentration of 10,000 ppm gave the best results on the variables of flower number, number of ovules, number of harvested fruit and weight of harvested fruit. Keywords : Paclobutrazol, Concentration, ‘Crystal’ Guava Plants
Respons Tanaman Angelonia (Angelonia angustifolia) terhadap Pemberian Paclobutrazol Rugayah Rugayah; Agus Karyanto; Setyo Widagdo; Farida Lukmi
JURNAL AGROTROPIKA Vol 22, No 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.6563

Abstract

Ornamental plants have now developed as souvenirs given at a wedding. Requirements for souvenirs, the plants should be tiny, lush, and have much of flowers. So its growth needs to be modified using a growth regulator paclobutrazol. This study aimed to determine the response of angelonia plants to the application of paclobutrazol at several levels of concentration and determine the concentration of paclobutrazol which has the best appearance of angelonia plants. This research method used a randomized block design (RBD) with treatment of 6 levels of paclobutrazol concentration, namely 0 ppm, 30 ppm, 60 ppm, 90 ppm, 120 ppm and 150 ppm with 3 replications. The F test and further tests were carried out an Orthogonal Polynomials. All tests were carried out at the 5% level. The results showed that the application of paclobutrazol at a concentration level of 30-150 ppm, was effective in suppressing the growth rate of angelonia plants in the vegetative phase. This value was proved by the results of the questionnaire that, the highest visual value was obtained at a concentration of 150 ppm. But with the increasing concentration of paclobutrazol, the freshness of  flowers became shorter. Keywords: Angelonia, Concentration, Paclobutrazol
Pengaruh Lama Perendaman Benih dalam Larutan CaCO3 terhadap Pertumbuhan Bibit Kakao (Theobroma cacao L.) pada Media Tanaman yang Berbeda Gaol Uli Lumban Ericson; Sugiatno Sugiatno; Akari Edy; Herry Susanto
JURNAL AGROTROPIKA Vol 22, No 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.7432

Abstract

The presence of pulp in cocoa seeds is known to inhibit seed germination and seedling growth. The conventional method of removing pulp from cocoa seeds is done mechanically by rubbing the seeds with rubbing ash. Conventional pulp removal has disadvantages, such as being less practical and potentially damaging the seed surface. Therefore, it is necessary to try chemically removing the pulp from cocoa seeds by soaking the seeds in a lime solution (CaCO3). This study aims to determine the effect of the duration of cocoa seed soaking in CaCO3 solution and different planting media compositions on seedling growth. The research was conducted from September to December 2021 at a plastic house in Labuhan Dalam Village, Tanjung Senang District, Bandar Lampung, and the Seed Laboratory, Faculty of Agriculture, University of Lampung, Gedong Meneng, Bandar Lampung. The study used a Completely Randomized Design (CRD) arranged in a factorial manner. The first factor was the duration of cocoa seed soaking in CaCO3 solution, consisting of no soaking, soaking for 30, 60, 120, and 240 minutes. The second factor was the planting media composition, consisting of a mixture of rice husk charcoal + manure, sand + manure, and sand + rice husk charcoal + manure. Each treatment combination was replicated three times, resulting in 45 experimental units. The observation data were analyzed using analysis of variance, and the mean differences were tested using the Least Significant Difference (LSD) test at the 5% level. The results of the study showed that the duration of cocoa seed soaking in CaCO3 solution had no effect on cocoa seedling growth. The planting media composition of sand + rice husk charcoal + manure had a significant effect on the best cocoa seedling growth compared to the planting media compositions of rice husk charcoal + manure and sand + manure. Soaking cocoa seeds in CaCO3 solution had no effect on cocoa seedling growth in different planting media. Keywords : Cocoa seeds, pulp, CaCO3, soaking, planting media
Pengaruh Bahan Pelleting terhadap Perkecambahan Benih Bawang Merah (Allium cepa L.) Sion G. Rajagukguk; Agustiansyah Agustiansyah; Tumiar K. Manik; Yohannes Cahya Ginting
JURNAL AGROTROPIKA Vol 22, No 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.7105

Abstract

Shallot is an important commodity, but their productivity in Indonesia is still low. TSS can be used because of its higher production, longer shelf life, more resistance to disease pathogens, cheaper procurement and distribution costs, guaranteed seed quality, and high productivity potential, but has a small shape so it is difficult to plant so seed coating technology is needed. Seed pellets are coatings of seeds to change the shape, size and weight of seeds. This study aims to determine the effect of pelleting techniques on shallot seeds. This research was conducted with one treatment factor, namely without pelleting, soil + CMC, soil + CMC + Mycorrhizae, soil + CMC + Trichoderma, soil + CMC + Dolomite, soil + CMC + humic acid, soil + AG, soil + AG+ Mycorrhizae, soil +AG+Trichoderma, soil+AG+Dolomite, soil+AG+Humic acid. Each treatment was carried out with 3 replications so that 33 experimental units were obtained, with one experimental unit in the form of a planting media tray with 25 seeds each. The results of the study explained that the pelleting technique had no effect on germination, root length, coleoptile length, wet safe weight, dry safe weight, seed weight and had a significant effect on the emergence of plumules with the best treatment obtained in the soil. CMC + humic acid and seed pellet weight. stated that seed pellets can change the weight, size and shape of seeds so as to facilitate planting. The conclusion of this study is that shallot seed pelleting can be applied to shallot cultivation because it does not inhibit the growth and development of shallots and can facilitate the planting of shallot seeds. Key words:  Shallot, seed, pelleting, TSS
Pengaruh Volume Media Tanam dan Jumlah Tanaman Inang pada Produksi Spora Fungi Mikoriza Arbuskular Maria Viva Rini; Ramadian Budi Santoso; Sugiatno Sugiatno
JURNAL AGROTROPIKA Vol 22, No 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.6696

Abstract

Produksi fungi mikoriza arbuskular sangat dipengaruhi oleh media tanam dan tanaman inang. Oleh karena itu penelitian ini bertujuan untuk mendapatkan volume media tanam dan jumlah tanaman inang yang terbaik untuk memproduksi spora fungi mikoriza arbuskular (FMA). Penelitian menggunakan rancangan faktorial 5x 5 dengan faktor pertama volume media tanam yang terdiri dari 200 ml, 400 ml, 600 ml, 800 ml, dan 1000 ml. Sedangkan faktor ke dua adalah jumlah tanaman inang per pot yang terdiri dari 1, 2, 3, 4, dan 5 tanaman. Setiap perlakuan diulang sebanyak 4 kali. Media tanam yang digunakan adalah campuran pasir sungai steril dengan zeolite dengan perbandingan 1: 1 berdasarkan volume dan tanaman inang yang digunakan adalah Pueraria javanica. Tanaman inang dipelihara di rumah kaca hingga 4 bulan kemudian dikeringkan (tanpa disiram selama 2 minggu) untuk memicu produksi spora. Data hasil penelitian menunjukkan bahwa volume media tanam yang paling sesuai untuk memproduksi spora FMA adalah 400 ml dengan jumlah tanaman inang sebanyak 5 tanaman. Dari perlakuan ini diperoleh jumlah spora terbanyak dibandingkan perlakuan lainnya.
Biochar: Pemanfaatan dan Aplikasi Praktis Rusdi Evizal; Fembriarti Erry Prasmatiwi
JURNAL AGROTROPIKA Vol 22, No 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.7151

Abstract

Biochar is a carbon-rich solid produced from the pyrolysis of biomass such as wood, manure, and leaves under high temperature and low oxygen conditions which is used for agricultural applications as a soil amendment. This paper reviews the utilization and practical application of biochar. The application of biochar into the soil can improve the physical, chemical and biological properties of the soil, namely increasing porosity, water holding capacity, soil aggregation, increasing pH, cation exchange capacity, soil organic carbon, nutrient retention and availability, and increasing microbial life, meso and soil macrofauna. Aside from being a soil amendment, biochar has a function on issues of global warming, climate change, and the environment, namely its role in carbon sequestration and stabilization, greenhouse gas emissions, and soil pollutant remediation. If biochar is applied properly, namely using the right feedstock materials, method of manufacture, dosage, method of application, and place, it will affect agronomic performance and crop yields. Reduced yields are mostly occured in temperate climates as biochar significantly increases soil pH causing an effect of excessive liming resulting in immobilization of key nutrients such as Mg, Fe, B, and P. Biochar needs to be mixed or applied together with fertilizer ingredients such as chemical fertilizers, bio-fertilizers, compost, and manure. Another effort is to enrich biochar with those materials so that biochar is categorized as a biochar-based fertilizer that has a higher selling price. Key words : Application, biochar, benefit, method, crop yield

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