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All Journal Buletin Agrohorti Journal of Tropical Crop Science Botani: Publikasi Ilmu Tanaman dan Agribisnis Journal Arunasita
Mulyana, Erik
Bogor Agricultural University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance

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Correlations Between Leaf N, P, K, Ca and Fe Levels and The Production of Metabolites in Torbangun (Coleus amboinicus Lour.) Mulyana, Erik; Aziz, Sandra A; Aisyah, Syarifah Iis; Damanik, M. Rizal Martua
Journal of Tropical Crop Science Vol 2 No 2 (2015): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5502.603 KB) | DOI: 10.29244/jtcs.2.2.17-27

Abstract

Torbangun (Coleus amboinicus Lour) is a tropical plant from the Lamiaceae family. Torbangun leaves have a distinct aroma. Torbangun leaves have been traditionally used as a medicinal plant in North Sumatra, Indonesia. Bataknese lactating women in North Sumatra consumed torbangun leaves after giving birth with beliefs that it could increase their breast milk production (lactagogue), and that the leaves can function as anti-fungal and/or anti-bacterial, analgesic, to reduce blood cholesterol, and clean the human uterus. However, scientific evidence on this traditional herb is limited. This research was conducted to: (1) determine the leaf N, P, K, Ca and Fe in different position along the plant and the leaf age as to diagnose the secondary metabolites content of torbangun leaves, and (2) determine the relationship between N, P, K, Ca and Fe leaf concentrations with their metabolite production. The results of the study showed that: (1) the best leaf position and age to determine of the need of N, P, K, Ca and Fe nutrients are on the 3rd leaf position of 5 months-old plant (2) There was a positive correlation between leaf K concentrations with shoot dry weight, Ca with PAL activity, and Fe with total saponins on the 3rd leaf position of 5 months-old plant.Keywords: Coleus amboinicus Lour, torbangun, nutrient, correlation test, secondary metabolites.
Pengaruh Pemberian Pupuk Majemuk Tinggi Kalium terhadap Pertumbuhan Tanaman Wortel (Daucus carota L.) Furqoni, Hafith; Mulyana, Erik; Rosyad, Astryani
Botani : Publikasi Ilmu Tanaman dan Agribisnis Vol. 2 No. 2 (2025): : Botani : Publikasi Ilmu Tanaman dan Agribisnis
Publisher : Asosiasi Riset Ilmu Tanaman Dan Hewan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/botani.v2i2.318

Abstract

Pemupukan merupakan kegiatan penting dalam budidaya pertanian yang memiliki tujuan untuk meningkatkan produksi tanaman melalui penyediaan unsur hara yang diperlukan. Tujuan dari penelitian ini adalah untuk menguji efektivitas pupuk majemuk tinggi kalium terhadap pertumbuhan dan produksi tanaman wortel serta efektivitas agronominya. Perlakuan disusun dalam 7 taraf pemupukan yaitu : tanpa pupuk (P0), pemupukan standar pembanding (P1), 0.5 dosis pupuk majemuk tinggi kalium (P2), 0.75 dosis pupuk majemuk tinggi kalium (P3), 1 dosis pupuk majemuk tinggi kalium (P4), 1.25 dosis pupuk majemuk tinggi kalium (P5), 1.5 dosis pupuk majemuk tinggi kalium (P6). Hasil percobaan menunjukkan bahwa pemberian 1.0 dosis pupuk majemuk tinggi kaliummenghasilkan pertumbuhan tanaman (tinggi tanaman dan jumlah daun), komponen hasil dan hasil tanaman wortel (panjang umbi, diameter umbi, hasil/tanaman, hasil/petak, dan hasil/ha) tertinggi dibandingkan dengan perlakuan lainnya dan nyata lebih baik dibandingkan dengan perlakuan kontrol. Pupuk majemuk tinggi kalium lulus uji efektivitas lapangan. Dosis yang direkomendasikan untuk tanaman wortel adalah 187 kg/ha yang diaplikasikan 2 kali, 50% dosis pada 1 minggu setelah tanam (MST) dan sisanya diaplikasikan pada 4 MST.
Growth and Production of Sweet Corn (Zea mays var. Saccharata Sturt.) at Various Doses of Micro Inorganic Fertilizers (3.14% Zn – 2.54% Cu) Mulyana, Erik; Rosyad, Astryani; Furqoni, Hafith; Khairullah, Adrian; Annas, Sofian; Suwarto, Suwarto
Buletin Agrohorti Vol. 13 No. 2 (2025): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v13i2.64456

Abstract

Sweet corn is a horticultural commodity that is widely cultivated in Indonesia. This study aimed to determine the development and growth response of sweet corn plants to the application of different doses of micro inorganic fertilizer (3.14% Zn – 2.54% Cu). The research was conducted at Sindangbarang Experimental Field, Bogor, West Java. This experiment used a Randomized Complete Block Design (RCBD) with a single factor, namely the dose of fertilizer application. Treatments were arranged in 4 levels of application, namely: (1) control, (2) standard NPK, (3) NPK + 1 micro dose, (4) ¾ NPK + 1 micro dose. The results of this test indicate that the application level of micro inorganic fertilizers at the application level of NPK fertilizer + 1 micro dose and ¾ NPK + 1 micro dose fertilizer treatment can generally provide plant height, stem diameter, number of leaves, cob length, cob diameter, stover weight, cob weight with husk, cob weight without husk, production per plot, and productivity which were statistically higher than the control treatment. The application of NPK + 1 micro dose and fertilizer treatment of ¾ NPK + 1 micro dose have Relative Agronomic Effectiveness (RAE) values that meet the requirements to pass the fertilizer effectiveness test, with the highest RAE value obtained in the application of ¾ NPK + 1 micro dose fertilizer at 118%. Keywords: copper, effectivity of fertilizer, horticulture plants, zinc
Growth and Yield Response of Sweet Corn (Zea mays var. Saccharata Sturt.) at Various Doses of Ammonium Sulfate Fertilizer Mulyana, Erik; Rosyad, Astryani; Hapsari, Dhika Prita
Journal Arunasita Vol. 2 No. 3 (2025): Soil Management
Publisher : WBS Laboratory

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.17118766

Abstract

Sweet corn is a horticultural commodity that is widely cultivated and consumed in Indonesia. This study aimed to determine the growth and yield response of sweet corn plants to the application of various doses of ammonium sulfate fertilizer. The research was conducted at Pasir Kuda Experimental Field, Bogor, West Java. This experiment used a randomized complete block design (RCBD)with a single factor, namely the dose of fertilizer application. Treatments were arranged in 4 levels of application, namely: (1) control, (2) standard NPK fertilization, (3) 0.5 dose of N, (4) 1,0 doses of N, (5) 1,5 doses of N, and (6) 2,0 doses of N. The results of this test indicate that the application level of ammonium sulfate fertilizers at the application level of 1,0 doses N fertilizer treatment can generally provide plant height, stem diameter, number of leaves, stover weight, cob weight with husk, cob weight without husk, production plot-1, and productivity which are statistically higher than the control treatment. The application of 1,0 doses N fertilizer treatment had Relative Agronomic Effectiveness (RAE) values that meet the requirements to pass the fertilizer effectiveness test, with the highest RAE value obtained in the application of 1,0 doses N fertilizer at 188%.
Growth and Yield of Sweet Corn (Zea mays var. Saccharata Sturt.) in Response to the Application of Inorganic Calcium Nitrate Fertilizer Mulyana, Erik
Buletin Agrohorti Vol. 13 No. 3 (2025): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/

Abstract

Sweet corn is a horticultural commodity that is widely cultivated in Indonesia. This experiment aimed to determine the effectiveness of inorganic calcium nitrate fertilizer on the growth and yield of different sweet corn plants (Zea mays var. Saccharata Sturt.). The study was conducted at the Sindangbarang Experimental Field, Bogor, West Java. This experiment used a randomized complete block design (RCBD) with a single factor, namely the dose of fertilizer application. The treatment consisted of one factor with six levels of fertilization, namely (P1) control, (P2) standard NPK (135 kg N ha-1, 72 kg P₂O₅ ha-1, and 120 kg K₂O ha-1), (P3) 0.5 dose of calcium nitrate fertilizer, (P4) 0.75 dose of calcium nitrate fertilizer, (P5) 1.0 dose of calcium nitrate fertilizer, and (P6) 1.5 dose of calcium nitrate fertilizer. The test results showed that the treatment of applying 0.5 – 1.5 dose of calcium nitrate fertilizer is higher increased stover weight, cob weight with husked, cob weight without husked, production and productivity which were statistically higher than the control treatment. The application of 0.5 dose of calcium nitrate fertilizer has the highest Relative Agronomic Effectiveness (RAE) value that meets the requirements to pass the fertilizer effectiveness test, with an RAE value of 95%. Keywords: fertilizer effectiveness, horticulture plants, nutrient, productivity
Co-Authors Annas, Sofian Aziz, Sandra A Dhika Prita Hapsari Furqoni, Hafith Khairullah, Adrian Muhamad Rizal Martua Damanik Rosyad, Astryani Suwarto Suwarto Syarifah Iis Aisyah