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All Journal Jurnal Lahan Suboptimal Jurnal Ilmu-Ilmu Pertanian Indonesia AGRIVITA, Journal of Agricultural Science Seminar Nasional Lahan Suboptimal BIOVALENTIA: Biological Research Journal
Dr. Susilawati Susilawati
Jurusan Budidaya Pertanian, Fakultas Pertanian Universitas Sriwijaya Jalan Palembang-Prabumulih,km.32, Ogan Ilir, Indralaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Medicine & Pharmacology Other

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Journal : BIOVALENTIA: Biological Research Journal

 1 
ANALYSIS OF PB CONTENT IN LEAVES OF COVERING PLANTS IN VARIOUS ROADS IN PALEMBANG CITY Hasdevi Hasdevi; Suheryanto Suheryanto; Susilawati Susilawati
BIOVALENTIA: Biological Research Journal Vol. 9 No. 1 (2023)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/biov.9.1.2023.335

Abstract

Alternative Decree of the Director General of Oil and Gas No. 3674K/24/DJM/2006 dated March 17, 2006 concerning Standards and Quality (Specifications) of Gasoline-Type Fuel Oil Marketed Domestically where in the attachment to the Specification for Gasoline-Type Fuel Oil RON 91 and RON 95 (Pertamax) still contains Pb of 0.013 grams per liter. The exhaust gas produced by motorized vehicles using leaded fuel emits Pb into the environment and has the potential to be absorbed into the leaf tissue of road shade plants. The aim of this study was to examine the Pb content in the leaves and determine the effect of the Pb content in the ambient air on the Pb content in the leaves of various cover crops on Jalan Raya Palembang City. The research samples were leaves of mahogany, umbrella tree, burmese rosewood, bullet wood tree, and rain tree which were dominant and had similarities on Jl. Soekarno Hatta – Alamsyah Ratu Prawiranegara, Jl. Cabbage. H. Burlian, Jl. Jend. Sudirman, Jl. Jend. Basuki Rahmad, Jl. Jend. R. Soekanto, Jl. Jend. Ahmad Yani. Jl. governor HA. Bastari. Analysis of the Pb content in leaves and air using the AAS (Atomic Absorption Spectrophotometer) method. The results of the study found that the highest Pb content in the leaves of the Mahogany plant was on Jl. Jend. Basuki Rahmad 0.112 mg/kg while the lowest was on Jl. governor HA. Bastari <0.081 mg/kg. Pb content in umbrella tree plants in all roads < 0.081 mg/kg. The highest Pb content in burmese rosewood plants is on Jl. Jend. Basuki Rahmad 0.116 mg/kg while the lowest was on Jl. governor HA. Bastari <0.081 mg/kg. The highest Pb content in bullet wood tree Jl. Jend. Basuki Rahmad 0.099 mg/kg while the lowest is on Jl. governor HA. Bastari <0.081 mg/kg. The highest Pb content in rain tree is on Jl. Jend. Basuki Rahmad 0.089 mg/kg while the lowest is on Jl. governor HA. Bastari <0.081 mg/kg. The highest Pb content in ambient air is on Jl. Jend. Basuki Rahmad 0.06 ʯg/Nm3 while the lowest is on Jl. Jend. R. Soekarno. The Pb content in the ambient air affects the Pb content in the leaves.
PROPAGATION OF Cnidoscolus aconitifolius USING STEM CUTTINGS AT DIFFERENT MATURITY STAGES AND GROWING MEDIA Fitra Gustiar Mashadi; Benyamin Lakitan; Dedik Budianta; Zaidan P Negara; M. Umar Harun; Susilawati Susilawati; Straiker Ali Muda
BIOVALENTIA: Biological Research Journal Vol. 9 No. 1 (2023)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/biov.9.1.2023.382

Abstract

Chaya leaves (Cnidoscolus aconitifolius (Mill.) I.M. Johnst.) are leafy vegetables that contain many vitamins and minerals. Information about the intensification of chaya cultivation is still rare. Chaya propagated by stem cuttings. The maturity level of stem cuttings and planting media were expected to affect the success of plant propagation. This study aims to determine the maturity level of cuttings material that can grow well and deter-mine the type of media that can support the growth of chaya propagation. This research has been carried out from July to October 2022 in an off-campus experimental outdoor facility located in Inderalaya, South Suma-tra. This study was conducted using a randomized block design with 2 factors. The first factor was the level of maturity of stem cuttings material (upper, middle, and basal), and the second factor was the type of growing medium (control, chicken manure, and cow manure). The results showed that the use of cuttings from the mid-dle and basal has a better percentage of growth ability than the upper cuttings. Chaya plants used basal stem cuttings exhibited slower shoot grow but produced higher number of leaves, greater leaf area, canopy area, and biomass. The use of cow manure in a mixture of growing medium gave the best results on growth of chaya plants.
ARTIFICIAL SHADE ADAPTATION AND POPULATION DENSITY ON SWISS CHARD (Beta vulgaris subsp. Cicla (L) W.D.J Koch) IN URBAN AR-EA Rofiqoh Ria; Benyamin Lakitan; Firdaus Sulaiman; Yakup Yakup; Zaidan P Negara; Susilawati Susilawati
BIOVALENTIA: Biological Research Journal Vol. 9 No. 1 (2023)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/biov.9.1.2023.384

Abstract

Swiss chard is a leafy vegetable that is high in nutrients, vitamins, minerals, protein, and antioxidants that are beneficial to human health. Swiss chard. Swiss chard is generally cultivated in the Mediterranean climate, grows well in full sunlight, air temperatures 14-21oC, and can still survive at temperatures close to light frost. The aim of this study to evaluate efficient plant densi-ties in urban limited land area and looking at the response of Swiss chard plant to reduc-ing the intensity of sunligt of 45%, 55% and 80%.in urban tropic area. This research was used 4 different artificial shading i.e 0% (control, shade 45%, shade 55% and shade 80%. Microclimate was measured per each shade for 14 days i.e., air temperatur, soil temperature, air humidity, and soil moisture using a data logger meter. Shade with intensity 80% is proven to reduce air temperate and soil temperature, but also inhibits the growth and development of Swiss chard plants. Population 1plant/pot gives the best growth and yield of Swiss chard per plant, 3 plants/pot increased total fresh weight per cultivation area, thereby maximize the use of limited urban land
Co-Authors Ade Mutia Akrom, Akrom Astuti Kurnianingsih Astuti Kurnianingsih B., Lucy Robiartini Benyamin Lakitan Budiyati Ichwan Chandra Irsan Dedik Budianta Eliyanti Eliyanti Erise Anggraini Erizal Sodikin Firdaus Sulaiman Fitra Gustiar, Fitra Hasdevi Hasdevi Hasmeda, Mery Hegar Nurjannah Indra Permana Irmawati Irmawati Irmawati Irmawati Khoirul Ikhsanudin Hanif M. Umar Harun M. Umar Harun Muhammad Ammar Muhammad Ammar Muhammad Ammar Muhammad Umar Harun Munandar Munandar R.A. Suwignyo Rifki Hayatullah Rina Sopiana Rofiqoh Ria Rujito Agus Suwignyo SITI HERLINDA Sri Sukarmi Sri Sukarmi Straiker Ali Muda Suheryanto Suheryanto Suwandi Suwandi Tili Karenina Yakup Yakup Z, Zulkarnain Z. D Asmara Zaidan P Negara Zaidan P Negara